Telecom Circuit Protection
Glossary
Chart
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Table of Contents
This catalog showcases the products we
Introduction
have developed specifically for the
•
Telecom System Protection .....................................................................................................................2
•
Fuse Applications.....................................................................................................................................4
•
Summary of Telecom Standards..............................................................................................................8
telecommunications industry. It also
provides application information to
give you a better understanding of the
Power Distribution Protection Products
variety of circuit protection technologies
•
L17T Series — Telecommunications Power Fuse .................................................................................10
•
LTFD 6001 Series — Telecommunications Disconnect Switch .............................................................11
•
LTFD 1200 Series — Telecom Disconnect Switch ...............................................................................12
•
TLN Series — Telecommunications Power Fuse...................................................................................13
•
TLS Series — Telecommunications Power Fuse...................................................................................14
•
LTFD 101 Series — Telecom Disconnect Switch .................................................................................15
available to meet your needs.
For more information about other
Littelfuse products, contact your
local Littelfuse representative or
visit the Littelfuse web site at:
www.littelfuse.com
Electronic Overcurrent Protection Products
•
481 Series — Alarm Indicating Fuse.....................................................................................................18
•
482 Series — Alarm Indicating Fuseholder ..........................................................................................19
•
70 Series — Alarm Indicating Fuse ......................................................................................................20
•
NANO2 ® 461 Series — Telecom Surface Mount Fuse..........................................................................21
•
436 Series — SMTelecom® Fuse ..........................................................................................................22
•
NANO2 SMF Slo-Blo® Series — Subminiature Surface Mount Fuse....................................................23
•
NANO2 SMF Very Fast-Acting Series — Subminiature Surface Mount Fuse.......................................24
•
NANO2 SMF Omni-Blok® Series — Surface Mount Fuse.....................................................................25
•
SlimLine 0603 Very Fast-Acting Type 434 Series — Thin-Film Surface Mount Fuse............................26
•
1206 SMF Very Fast-Acting Type 429/433 Series — Thin-Film Surface Mount Fuse ...........................27
•
LT-5™ Series — Subminiature Radial Lead and Cartridge Fuses ..........................................................28
•
2AG Slo-Blo Surge Withstand Series — Subminiature Glass Body Axial Lead and Cartridge Fuses.......29
•
5 x 20mm Series — IEC Standard Axial Lead and Cartridge Fuses ....................................................30
•
5 x 20mm Series — UL/CSA Standard Axial Lead and Cartridge Fuses .............................................31
•
3AG Fast-Acting Series — Glass Body Axial Lead and Cartridge Fuses .............................................32
•
3AB Series — UL/CSA Standard Axial Lead and Cartridge Fuses ......................................................33
•
1812L Series — Surface Mount Resettable PTCs ................................................................................34
•
3425L Series — Surface Mount Resettable PTCs ................................................................................35
•
60R Series — Radial Leaded Resettable PTCs....................................................................................36
Overvoltage / Suppression Protection Products
•
PulseGuard® Series — Surface Mount ESD Suppressors ....................................................................38
•
ML, MLE, MLN Series — Multilayer Surface Mount Transient Voltage Surge Suppressors..................39
•
SGT Surface Mount Series — Surgector™ Transient Voltage Suppressors ...........................................40
•
SGT (TO-202) Series — Surgector Transient Voltage Suppressors......................................................41
•
ZA, RA, LA, UltraMOV, C-III and TMOV Series — Transient Voltage Suppression ...............................42
•
DA/DB and BA/BB Series — Transient Voltage Suppression ................................................................43
•
NA34, CA50 and CA60 Series — Transient Voltage Suppression ........................................................44
•
HA, HB34 and HC Series — Transient Voltage Suppression ................................................................45
•
SP72X Series SCR/Diode Arrays — Transient Voltage Suppression ....................................................46
Glossary ...............................................................................................................................................47
Selection Chart..............................................................................................................................48
www.littelfuse.com
1
Contents
Chart
Glossary
Next
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Introduction
Telecom System Protection
As the only manufacturer of
Overcurrent Protection
resettable PTCs, sub-miniature
and surface mount fuses, traditional
fuses, and overvoltage devices,
Littelfuse provides protection
solutions to any telecom
overcurrent and overvoltage
circuit protection application.
The circuit designer has a choice
of technologies when faced with
the task of providing overcurrent protection.
Traditional current limiting fuses and
Polymer based PTC (Positive Temperature
Coefficient) devices represent the most
common and reliable choices of circuit
protection. Understanding the differences in
these two devices can be the best method
in determining the proper protective device
for the application.
A fuse is a device that reacts to excessive
currents (overloads and short circuits) by
melting its internal link. This stops the flow
of current. The fuse must be replaced after
operating but, because of its design, it is
guaranteed to react instantly to excessive
currents, minimizing damage to a circuit. It
also has no moving parts and is not subject
to mechanical fatigue like a circuit breaker.
A PTC is a resettable overload device that
reacts to excessive currents by increasing
its resistance, minimizing the flow of current.
Unlike fuses, PTCs can be reset to their
low resistance state by removing power
and allowing them to cool down. Because
of their resettability, PTCs are being used in
more and more telecom applications where
fuse replacement is impractical.
The following Littelfuse products have
been developed for protecting telecom
applications:
Tele-GARD™ Fuses
Littelfuse TLS, TLN, and L17T Series
Tele-GARD telecom fuses were developed
specifically for the protection of 170 VDC,
100,000 A.I.R. telecom circuits. All Tele-GARD
fuses are safe, reliable, high performance
devices that are engineered to provide
current limiting protection to the
cables and equipment found within
a power distribution system.
2
Alarm Indicating Fuse
Our 481 Series alarm indicating fuses are
used in telecommunications and control
panel applications from 60 VDC and up to
20A. They feature a color coded flag that
immediately identifies when a fuse has
opened. The colors conform
to telecom standards for
easy determination of the
amperage. Clear plastic
lenses are available for
additional safety.
Telecom Nano2® Fuse
This fuse meets UL and Bellcore standards
for protection from lightning and power cross.
It’s small size makes it ideal
for many applications such as desktop
modems, telephones, answering
machines, and other slim profile
products. This fuse
is rated for 250V applications
and is designed to meet
UL1459/1950 3rd edition,
Bellcore CR-1089-CORE, and FCC 47
Part 68 Surge Specifications.
2AG Slo-Blo® Fuse
The 229 and 230 Series 2AG Slo-Blo fuses
are offered in cartridge and axial leaded
forms for a variety of applications. The 2AGs
are currently used in many telecom applications and meet UL and Bellcore standards. An
indicating version of the fuse that was
developed specifically for the telecom
industry to help determine when a
fuse has blown is also available.
The fuse’s body turns from clear
to brown to help personnel
quickly identify when it
needs replacement.
PTC Devices
Littelfuse’s 1812L, 3425, 30R, and 60R Series
resettable fuses are available in radial and
surface mount configurations for a variety of
telecom applications up to 60V. The devices
protect sensitive circuits by using Polymer
technology to virtually stop the flow of current
when damaging current levels appear. Once
the levels return to normal and the
devices cool down, they return
to their normal state and allow
current to pass through.
www.littelfuse.com
Contents
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Glossary
Previous
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Introduction
Telecom System Protection
ESD Protection
Overvoltage Protection
As with overcurrent protection,
today’s designers have numerous
options available to protect their products
from the damaging effects of overvoltage
events. The threats can come from several
sources including lightning strikes (both
direct and induced) and electrostatic
discharge (ESD). While the energy and
source for these transients are completely
different, their effects are the same; if
provisions are not taken to guard against
them, they can destroy electronic equipment.
Data transmission lines are
extremely susceptible to Electrostatic
Discharge (ESD) events. ESD events can
reach peak voltages of 25KV and currents of
100A in less than one nanosecond, causing tremendous damage to electronic
devices that use microprocessors and other
sensitive electronic circuitry. For this reason,
ESD suppressors are used to temporarily
shunt the flow of current to ground so that it
does not enter the electronic circuitry.
Littelfuse’s PGB series PulseGuard ESD
suppressors use Polymer composite voltage
varying material to provide protection. Under
normal circuit operating conditions, the ESD
suppressor remains in a high resistance state
that is transparent to the circuit. However, when
an ESD transient develops, the suppressor’s
resistance drops sharply, shunting the ESD
current away from the circuit. After the
energy is dissipated, the suppressor
automatically returns to its normal
high resistance state. These devices
are available in both single and
multi-line surface mount packages, as
well as array inserts to mate with several
industry standard connector options.
Multilayer Varistors
Littelfuse’s multilayer varistors are ideal for
the protection of board level power supply
lines and low frequency data and
control lines in the event of ESD
or high-energy transients.
TYPICAL ESD EVENT
Littelfuse offers a complete line of overvoltage suppression products to safeguard
electronic equipment. The technologies
include metal oxide varistors (MOVs), silicon
SCR diode arrays, thyristors and voltage
variable polymer devices. These devices will
either clamp the transient to a tolerable
level or crowbar the transient to ground.
PulseGuard™
Voltage
Transient ESD
Circuit Damage Level
Suppressor Clamp Level
Time
Voltage Rise Time vs.
Suppressor Clamp Level
Metal Oxide Varistors (MOVs)
These devices employ a semiconducting
polycrystalline ceramic structure that clamps
a transient to some safe level during a fault.
The device is normally in a high impedance
state, but switches to a low impedance state
during a transient. Littelfuse offers devices in a
variety of package options, from a ‘0603’ chip
package (capable of being used in portable
devices) to large industrial packages (which
can be bolted to the framework of large
machines). The options also include radial
leaded disc packages from 7 to 20mm.
The energy handling capability of these
devices range from 100mJ in a surface
mount chip package to over 1000 J
in a large industrial package.
Operating voltages are
available from 3 to 1000V,
depending upon package.
Thyristors/Surgectors
These devices employ silicon technology in
various packages to crowbar the effects of
induced lightning strikes in telecommunications
devices. Littelfuse offers both leaded and
surface mount versions in both unidirectional
and bidirectional versions. These devices are
traditionally used after the overcurrent protector
on the front-end of the circuit and use
of these parts allow the designer to
meet the requirements of several
current telecommunications standards.
One of the drivers for ESD protection
globally are the requirements outlined in
the IEC 61000-4-2 specification, which
outlines specific immunity levels for devices
shipping into member communities. The
Littelfuse portfolio has options available
to allow transparent protection for data
rates up to 3000Mbit/sec. The capacitance
levels available range from 60 pico farads
to 55 femto farads.
SP720 Diode Arrays
These devices are used primarily to protect
data lines from the adverse effects of ESD.
Littelfuse offers devices in both leaded and
surface mounts packages with line provisions
to protect from 4 to 14 lines. These
devices will divert the transient
to either power rail once the
threshold voltage is exceeded.
The typical energy handling
capability of these devices is
in the milli-joule range.
www.littelfuse.com
3
Contents
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Next
Glossary
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Fuse Applications
As a leading manufacturer of overcurrent, overvoltage, and ESD protection devices, Littelfuse
understands the importance of circuit protection in communications systems. Whether
you’re protecting phones, faxes, modems, PBX’s, or power distribution systems, Littelfuse
has a product specifically designed for your application.
Pager
Rectifier/
Power
Battery Distribution
Incoming
Center
Equipment
AC
(Transmitter, etc.)
Power
Wireless
Cellular
Cell Phone
Incoming
Power
CELLULAR / WIRELESS BASE STATION
SATELLTE
RELAY STATION
Palm Pilot
RESIDENTIAL
Rectifier
Battery
Power
Distribution
Primary
WIRELESS
CELLULAR
Secondary
Power Distribution
Equipment
CENTRAL OFFICE (CO)
POWER SYSTEM
MTSO CO
IXC CO
ILEC CO
WIRELESS
CELLULAR
BASE STATION
RESIDENTIAL
CO
REMOTE
SITE / NODE
REMOTE
SITE / NODE
GLOSSARY
MICROWAVE
TRANSMISSION
Fax
Fax/Modem
Work Stations
NET
WO
COMMERCIAL
PABX
Central Office
RK
ESD
Telephone
Telephone
Line Card
RESIDENTIAL / COMMERCIAL NETWORK
Work Station
Overcurrent
Fax
Overvoltage
4
www.littelfuse.com
CLEC (Competitive Local Exchange Carrier)
A competitor to local telephone companies that has been
granted permission to offer local telephone service. CLECs
compete with independent and Bell telephone companies.
CO (Central Office) The location that contains
equipment to route calls to and from customers. It also
connects customers to Internet Service Providers and
long distance carriers.
LEC (Local Exchange Carrier) Any company
authorized by the state public utility commission to sell
local telephone service.
MTSO (Mobile Telephone Switching Office)
This location contains all the equipment required for
mobile wireless communications.
PBX (Private Branch Exchange) A private telephone
switching system, usually located on a customer’s premises, that provides intra-premises exchange telephone
service, as well as access to the public exchange network and/or private facilities.
RBOC (Regional Bell Operating Company)
Regional Bell Operating Companies that were formed after
the breakup of AT&T in 1984. Examples include: US West,
Bell South, Bell Atlantic, and SBC.
Wireless Base Station A remote location next to a
cellular tower that contains communication equipment to
support wireless calls.
www.littelfuse.com
5
Contents
Chart
Previous
Glossary
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Fuse Applications
As a leading manufacturer of overcurrent, overvoltage, and ESD protection devices, Littelfuse
understands the importance of circuit protection in communications systems. Whether
you’re protecting phones, faxes, modems, PBX’s, or power distribution systems, Littelfuse
has a product specifically designed for your application.
Pager
Rectifier/
Power
Battery Distribution
Incoming
Center
Equipment
AC
(Transmitter, etc.)
Power
Wireless
Cellular
Cell Phone
Incoming
Power
CELLULAR / WIRELESS BASE STATION
SATELLTE
RELAY STATION
Palm Pilot
RESIDENTIAL
Rectifier
Battery
Power
Distribution
Primary
WIRELESS
CELLULAR
Secondary
Power Distribution
Equipment
CENTRAL OFFICE (CO)
POWER SYSTEM
MTSO CO
IXC CO
ILEC CO
WIRELESS
CELLULAR
BASE STATION
RESIDENTIAL
CO
REMOTE
SITE / NODE
REMOTE
SITE / NODE
GLOSSARY
MICROWAVE
TRANSMISSION
Fax
Fax/Modem
Work Stations
NET
WO
COMMERCIAL
PABX
Central Office
RK
ESD
Telephone
Telephone
Line Card
RESIDENTIAL / COMMERCIAL NETWORK
Work Station
Overcurrent
Fax
Overvoltage
4
www.littelfuse.com
CLEC (Competitive Local Exchange Carrier)
A competitor to local telephone companies that has been
granted permission to offer local telephone service. CLECs
compete with independent and Bell telephone companies.
CO (Central Office) The location that contains
equipment to route calls to and from customers. It also
connects customers to Internet Service Providers and
long distance carriers.
LEC (Local Exchange Carrier) Any company
authorized by the state public utility commission to sell
local telephone service.
MTSO (Mobile Telephone Switching Office)
This location contains all the equipment required for
mobile wireless communications.
PBX (Private Branch Exchange) A private telephone
switching system, usually located on a customer’s premises, that provides intra-premises exchange telephone
service, as well as access to the public exchange network and/or private facilities.
RBOC (Regional Bell Operating Company)
Regional Bell Operating Companies that were formed after
the breakup of AT&T in 1984. Examples include: US West,
Bell South, Bell Atlantic, and SBC.
Wireless Base Station A remote location next to a
cellular tower that contains communication equipment to
support wireless calls.
www.littelfuse.com
5
Contents
Chart
Glossary
Previous
Next
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Power Distribution Protection
Inside the Central Office
Power Distribution Protection
Residential and Commercial Telecommunications Protection
Central Office Protection
Residential and
Commercial Protection
Incoming
AC Power
Equipment
(PBX, Router, Etc.)
Rectifier
Battery
Power
Distribution
Primary
Secondary
Power Dist.
TO CRITICAL
EQUIPMENT
INCOMING
AC POWER
TO CRITICAL
EQUIPMENT
RECTIFIER/
CHARGER
BATTERY
PRIMARY POWER
DISTRIBUTION
PANEL
75% of all residential and commercial
field equipment failures are caused by
electrical overstress. Unexpected acts of
nature such as lightning, ESD
discharge, and powercross cause
millions of dollars a year in damage
to sensitive systems. For this reason,
overvoltage, overcurrent, and ESD
protection are used in most all of the
components that are connected to a
telecommunications system to ensure
their reliability and continued operation.
RESIDENTIAL AND COMMERCIAL NETWORKS
COMMERCIAL APPLICATION
TELEPHONE
CENTRAL OFFICE
RESIDENTIAL
APPLICATION
NETWORK
TELEPHONE NETWORKS
TO CRITICAL
EQUIPMENT
TELEPHONE NETWORKS
In order to provide uninterrupted service,
telecommunications circuits utilize DC
power and rely on UPS and batteries to
provide immediate backup in the event of
an outage. Littelfuse’s Tele-GARD™ series
fuses have been specifically designed for
DC applications to protect these systems.
FIG. 1. CENTRAL OFFICE POWER DISTRIBUTION SYSTEM
SECONDARY POWER
DISTRIBUTION PANELS
WIRELESS/CELLULAR APPLICATIONS
Rectifier/
Battery
Base Station
PAGE 43
PAGE 13
PAGE 10
PAGE 18
PAGE 14
PAGE 45
The diagram in Figure 1 illustrates a typical power distribution system found within most telephone
Central Offices (COs). Smaller systems utilizing similar equipment are also found in wireless/cellular base
stations, remote sites, and cellular mobile telephone switching offices (MTSOs).
Selecting Overcurrent
Protection
Fuses are commonly used in the primary and
secondary power distribution circuits to protect
the equipment and cables, as well as the
equipment operators against the damage
caused by a fault. Although other forms of
circuit protection are available, only current
limiting fuses can react quickly enough to
interrupt a fault and minimize the damaging
effects. This helps ensure the reliability and
continued operation of the system.
Short circuit currents can reach as high as
40,000 or 50,000A during the first 1/2 cycle
(0.008 seconds) of a fault (see Figure 2).
FIG. 2. FUSE LET-THRU CURRENT
If not limited, the tremendous amount of
energy can bend buss bars, destroy bracing
structures, crack insulators, and damage
components. Littelfuse’s current limiting
Tele-GARD fuses are designed to open and
clear a short circuit in less than 1/2 cycle,
greatly reducing the amount of damaging
energy that is let through. Non-current
limiting circuit breakers often require 2 to 3
cycles or more to open the circuit, permitting
a huge amount of destructive short circuit
energy through before opening the circuit
(see Figure 3).
FIG. 3. CIRCUIT BREAKER LET-THRU CURRENT
Destructive
Energy
Normal
Load Current
Initiation of a
Short Circuit
6
Fuse Opens and Clears
Short Circuit In Less
Than 1/2 Cycle
Initiation of a
Short Circuit
Circuit Breaker
Trips and Opens
www.littelfuse.com
Wireless and cellular base stations are
critical pieces of the telecommunications
infrastructure but are often located in
remote, difficult to reach areas. This
equipment must provide reliable and
uninterrupted service with minimal
upkeep. For this reason, multiple
forms of overcurrent, overvoltage
and ESD protection are used.
Equipment
(Transmitter, Etc)
Power
Distribution
Center
Wireless
cellular
Pager
Cell Phone
TRANSMITTER/
RECEIVER
PAGE 14
PAGE 10
INCOMING
AC POWER
POWER SUPPLY
ROUTERS/
SWITCHES
TO CRITICAL LOAD
PAGE 18
PAGE 13
PAGE 29
TELEPHONE NETWORK
Wireless/Cellular Protection
PAGE 22
TIP
TO
EQUIPMENT TO
BE PROTECTED
(ROUTER/SWITCH
ETC…)
RING
TELEPHONE LINE INTERFACE CARD
PAGE 41
Portable Devices
Handheld cellular and wireless phones
are particularly susceptible to power
disturbances and ESD charges. Their
batteries, LCD displays, bottom
connectors and microphones are all
critical components that require some
form of circuit protection to remain in
operation. As the world’s leading supplier
of overvoltage, overcurrent and ESD
protection, Littelfuse understands
this better then anyone else and has
developed a complete array of protective
devices for these applications.
CELLULAR PHONE PROTECTION
MICROPHONE
ESD PROTECTION
EARPHONE
ESD PROTECTION
KEYPAD/MCU
ESD PROTECTION
SIM CARD
ESD PROTECTION
OVERCURRENT PROTECTION
BOTTOM CONNECTOR
ESD PROTECTION
OVERVOLTAGE PROTECTION
OVERCURRENT PROTECTION
BATTERY
OVERVOLTAGE
PROTECTION
OVERCURRENT
PROTECTION
www.littelfuse.com
7
Contents
Chart
Glossary
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Previous
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Power Distribution Protection
Inside the Central Office
Power Distribution Protection
Residential and Commercial Telecommunications Protection
Central Office Protection
Residential and
Commercial Protection
Incoming
AC Power
Equipment
(PBX, Router, Etc.)
Rectifier
Battery
Power
Distribution
Primary
Secondary
Power Dist.
TO CRITICAL
EQUIPMENT
INCOMING
AC POWER
TO CRITICAL
EQUIPMENT
RECTIFIER/
CHARGER
BATTERY
PRIMARY POWER
DISTRIBUTION
PANEL
75% of all residential and commercial
field equipment failures are caused by
electrical overstress. Unexpected acts of
nature such as lightning, ESD
discharge, and powercross cause
millions of dollars a year in damage
to sensitive systems. For this reason,
overvoltage, overcurrent, and ESD
protection are used in most all of the
components that are connected to a
telecommunications system to ensure
their reliability and continued operation.
RESIDENTIAL AND COMMERCIAL NETWORKS
COMMERCIAL APPLICATION
TELEPHONE
CENTRAL OFFICE
RESIDENTIAL
APPLICATION
NETWORK
TELEPHONE NETWORKS
TO CRITICAL
EQUIPMENT
TELEPHONE NETWORKS
In order to provide uninterrupted service,
telecommunications circuits utilize DC
power and rely on UPS and batteries to
provide immediate backup in the event of
an outage. Littelfuse’s Tele-GARD™ series
fuses have been specifically designed for
DC applications to protect these systems.
FIG. 1. CENTRAL OFFICE POWER DISTRIBUTION SYSTEM
Next
SECONDARY POWER
DISTRIBUTION PANELS
WIRELESS/CELLULAR APPLICATIONS
Rectifier/
Battery
Base Station
PAGE 43
PAGE 13
PAGE 10
PAGE 18
PAGE 14
PAGE 45
The diagram in Figure 1 illustrates a typical power distribution system found within most telephone
Central Offices (COs). Smaller systems utilizing similar equipment are also found in wireless/cellular base
stations, remote sites, and cellular mobile telephone switching offices (MTSOs).
Selecting Overcurrent
Protection
Fuses are commonly used in the primary and
secondary power distribution circuits to protect
the equipment and cables, as well as the
equipment operators against the damage
caused by a fault. Although other forms of
circuit protection are available, only current
limiting fuses can react quickly enough to
interrupt a fault and minimize the damaging
effects. This helps ensure the reliability and
continued operation of the system.
Short circuit currents can reach as high as
40,000 or 50,000A during the first 1/2 cycle
(0.008 seconds) of a fault (see Figure 2).
FIG. 2. FUSE LET-THRU CURRENT
If not limited, the tremendous amount of
energy can bend buss bars, destroy bracing
structures, crack insulators, and damage
components. Littelfuse’s current limiting
Tele-GARD fuses are designed to open and
clear a short circuit in less than 1/2 cycle,
greatly reducing the amount of damaging
energy that is let through. Non-current
limiting circuit breakers often require 2 to 3
cycles or more to open the circuit, permitting
a huge amount of destructive short circuit
energy through before opening the circuit
(see Figure 3).
FIG. 3. CIRCUIT BREAKER LET-THRU CURRENT
Destructive
Energy
Normal
Load Current
Initiation of a
Short Circuit
6
Fuse Opens and Clears
Short Circuit In Less
Than 1/2 Cycle
Initiation of a
Short Circuit
Circuit Breaker
Trips and Opens
www.littelfuse.com
Wireless and cellular base stations are
critical pieces of the telecommunications
infrastructure but are often located in
remote, difficult to reach areas. This
equipment must provide reliable and
uninterrupted service with minimal
upkeep. For this reason, multiple
forms of overcurrent, overvoltage
and ESD protection are used.
Equipment
(Transmitter, Etc)
Power
Distribution
Center
Wireless
cellular
Pager
Cell Phone
TRANSMITTER/
RECEIVER
PAGE 14
PAGE 10
INCOMING
AC POWER
POWER SUPPLY
ROUTERS/
SWITCHES
TO CRITICAL LOAD
PAGE 18
PAGE 13
PAGE 29
TELEPHONE NETWORK
Wireless/Cellular Protection
PAGE 22
TIP
TO
EQUIPMENT TO
BE PROTECTED
(ROUTER/SWITCH
ETC…)
RING
TELEPHONE LINE INTERFACE CARD
PAGE 41
Portable Devices
Handheld cellular and wireless phones
are particularly susceptible to power
disturbances and ESD charges. Their
batteries, LCD displays, bottom
connectors and microphones are all
critical components that require some
form of circuit protection to remain in
operation. As the world’s leading supplier
of overvoltage, overcurrent and ESD
protection, Littelfuse understands
this better then anyone else and has
developed a complete array of protective
devices for these applications.
CELLULAR PHONE PROTECTION
MICROPHONE
ESD PROTECTION
EARPHONE
ESD PROTECTION
KEYPAD/MCU
ESD PROTECTION
SIM CARD
ESD PROTECTION
OVERCURRENT PROTECTION
BOTTOM CONNECTOR
ESD PROTECTION
OVERVOLTAGE PROTECTION
OVERCURRENT PROTECTION
BATTERY
OVERVOLTAGE
PROTECTION
OVERCURRENT
PROTECTION
www.littelfuse.com
7
Contents
Chart
Glossary
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
NEBS (Network Equipment Building Systems)
are guidelines developed by Bell Laboratories in
the 1970s to assist equipment manufacturers in
designing products that were compatible with
the telecom environment. NEBS requirements
include specifications for the physical and
electrical requirements of telecom equipment
to ensure their safety, compatibility, and
reliability. The two documents that define
NEBS requirements are GR-63-CORE for the
physical requirements and GR-1089-CORE
for the electrical safety and electromagnetic
requirements.
UL 1459/1950
UL 1459 contains safety standards for
telecommunications equipment. This includes
answering machines, telephones, and private
branch exchanges (PBXs) but does not
include computer equipment.
Revised in 1990, the primary purpose of 1459
was to provide protection to users and service
personnel from fire and shock hazards. 1459
also focuses on protecting against the hazards
associated with the voltages normally present
on the telephone network (48V when the
receiver is lifted from the cradle, and 90 to
150VAC to ring the phone).
Test procedures require that telecommunications equipment being tested will be wrapped
with a cheesecloth indicator and connected
to a power source through a 1.6A time delay
fuse. Several tests are conducted that simulate
overvoltage, overcurrent, and power cross
conditions. The device being tested must
not present the risk of fire and no charring
or ignition of the cheesecloth is allowed.
The purpose of the fuse or other protective
device is to safely interrupt the fault before the
cheesecloth is ignited. The fuse must also
limit the amount of damaging energy that is
passed along in the circuit.
UL 1950 3rd Edition “Safety of Information
Technology Equipment” is a standard
applicable to mains-powered or batterypowered information technology, electrical
business and associated equipment. The
device must have a rated voltage not
exceeding 600V and designed to be installed
in accordance with the NEC, Canadian
8
Electric Code, and the Standards for the
Protection of Electronic Equipment. It is also
applicable to products connected directly to
a telecommunications network to ensure the
safety of the operating personnel.
UL 1950 incorporates all of the tests for
UL 1459 with the exception that the fuse
can be 2 amps instead of 1459’s 1.6A fuse.
As of 4/1/00, all new equipment must be
UL Listed to UL 1950.
FCC 47 Part 68
Part 68 “Connection of Terminal Equipment to
the Telephone Network” provides protection to
telephone networks from “harms caused
by the connection of terminal equipment
and wiring thereto” by establishing minimum
allowable withstand ratings for fuses and
overvoltage devices.
The most pertinent section relating to
telecom fuses is Subpart D — Conditions for
Registration. The focus of this subpart is
environmental simulation. It contains four
tests covering: vibration, temperature and
humidity, shock, and surges. The temperature
and humidity testing is a cyclical test varying
the relative humidity (RH) and temperature for
three 30 minute intervals. The surge testing
consists of both metallic and longitudinal
modes representing line-to-line and line-toground respectively. For compliance, the fuse
must not open during any of these tests.
Telcordia GR-1089-CORE
Telcordia GR-1089-CORE “Electromagnetic
Compatibility and Electrical Safety — Generic
Criteria for Network Telecommunications
Equipment” is a standard that defines the
criteria for the safe and reliable operation of
telecom network equipment. It is intended to
help avoid equipment damage by defining
withstand requirements for AC power cross,
lightning, ESD, and power induction. There are
several levels of tests for ensuring protection
from lightning surges and AC power faults
but in all cases, the device must not cause
a fire or safety hazard.
First-Level Lightning Surge
The fuse will not be damaged and will continue
to operate after applying the surges. A typical
test surge is 1000V, 100A 10/1000µs for
50 repetitions. The testing is performed in
the longitudinal mode.
Second-Level Lightning Surge
The fuse should not become a fire,
fragmentation, or electrical safety hazard
as a result of the application of lightning
surge. The fuse is expected to open safely.
Cheesecloth is used to determine if the fuse
is a fire hazard. This test surge is 5000V, 500A
10/1000µs for two repetitions.
Intra-Building Lightning Surge
This test is similar to the First-Level
Lightning Surge. The fuse is required to
continue operation after a maximum surge
of 1500V, 100A, 2/10µs for two repetitions.
First-Level AC Fault
The fuse should not be damaged and should
continue to operate after the test under a
wide range of short circuit conditions. This
test is to determine if the circuit is immune
to low level induced currents. The maximum
condition that it would have to withstand is
600V, 1A for 60 (sixty) one-second pulses
with the primary protector removed.
Second-Level AC Fault
The fuse will not become a fire, fragmentation,
or electrical safety hazard after the SecondLevel tests. The maximum condition that the
circuit would have to withstand is a primary
contact test at 600V, 60A for 5 seconds.
ESD Immunity Tests
This test consists of 10 (ten) discharges of
each polarity at 4KV and 15KV for a total of
40 (forty) discharges. The fuse must not open
during any of these tests.
There are several levels of protection
in GR-1089-CORE standard but the fuse
selection is determined by the type of
equipment requiring protection as well
as the level of protection that is needed.
www.littelfuse.com
P R O T E C T I O N
NEBS
P R O D U C T S
Introduction
Summary of Telecom Standards
Contents
Glossary
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
NEBS (Network Equipment Building Systems)
are guidelines developed by Bell Laboratories in
the 1970s to assist equipment manufacturers in
designing products that were compatible with
the telecom environment. NEBS requirements
include specifications for the physical and
electrical requirements of telecom equipment
to ensure their safety, compatibility, and
reliability. The two documents that define
NEBS requirements are GR-63-CORE for the
physical requirements and GR-1089-CORE
for the electrical safety and electromagnetic
requirements.
UL 1459/1950
UL 1459 contains safety standards for
telecommunications equipment. This includes
answering machines, telephones, and private
branch exchanges (PBXs) but does not
include computer equipment.
Revised in 1990, the primary purpose of 1459
was to provide protection to users and service
personnel from fire and shock hazards. 1459
also focuses on protecting against the hazards
associated with the voltages normally present
on the telephone network (48V when the
receiver is lifted from the cradle, and 90 to
150VAC to ring the phone).
Test procedures require that telecommunications equipment being tested will be wrapped
with a cheesecloth indicator and connected
to a power source through a 1.6A time delay
fuse. Several tests are conducted that simulate
overvoltage, overcurrent, and power cross
conditions. The device being tested must
not present the risk of fire and no charring
or ignition of the cheesecloth is allowed.
The purpose of the fuse or other protective
device is to safely interrupt the fault before the
cheesecloth is ignited. The fuse must also
limit the amount of damaging energy that is
passed along in the circuit.
UL 1950 3rd Edition “Safety of Information
Technology Equipment” is a standard
applicable to mains-powered or batterypowered information technology, electrical
business and associated equipment. The
device must have a rated voltage not
exceeding 600V and designed to be installed
in accordance with the NEC, Canadian
8
Electric Code, and the Standards for the
Protection of Electronic Equipment. It is also
applicable to products connected directly to
a telecommunications network to ensure the
safety of the operating personnel.
UL 1950 incorporates all of the tests for
UL 1459 with the exception that the fuse
can be 2 amps instead of 1459’s 1.6A fuse.
As of 4/1/00, all new equipment must be
UL Listed to UL 1950.
FCC 47 Part 68
Part 68 “Connection of Terminal Equipment to
the Telephone Network” provides protection to
telephone networks from “harms caused
by the connection of terminal equipment
and wiring thereto” by establishing minimum
allowable withstand ratings for fuses and
overvoltage devices.
The most pertinent section relating to
telecom fuses is Subpart D — Conditions for
Registration. The focus of this subpart is
environmental simulation. It contains four
tests covering: vibration, temperature and
humidity, shock, and surges. The temperature
and humidity testing is a cyclical test varying
the relative humidity (RH) and temperature for
three 30 minute intervals. The surge testing
consists of both metallic and longitudinal
modes representing line-to-line and line-toground respectively. For compliance, the fuse
must not open during any of these tests.
Telcordia GR-1089-CORE
Telcordia GR-1089-CORE “Electromagnetic
Compatibility and Electrical Safety — Generic
Criteria for Network Telecommunications
Equipment” is a standard that defines the
criteria for the safe and reliable operation of
telecom network equipment. It is intended to
help avoid equipment damage by defining
withstand requirements for AC power cross,
lightning, ESD, and power induction. There are
several levels of tests for ensuring protection
from lightning surges and AC power faults
but in all cases, the device must not cause
a fire or safety hazard.
First-Level Lightning Surge
The fuse will not be damaged and will continue
to operate after applying the surges. A typical
test surge is 1000V, 100A 10/1000µs for
50 repetitions. The testing is performed in
the longitudinal mode.
Second-Level Lightning Surge
The fuse should not become a fire,
fragmentation, or electrical safety hazard
as a result of the application of lightning
surge. The fuse is expected to open safely.
Cheesecloth is used to determine if the fuse
is a fire hazard. This test surge is 5000V, 500A
10/1000µs for two repetitions.
Intra-Building Lightning Surge
This test is similar to the First-Level
Lightning Surge. The fuse is required to
continue operation after a maximum surge
of 1500V, 100A, 2/10µs for two repetitions.
First-Level AC Fault
The fuse should not be damaged and should
continue to operate after the test under a
wide range of short circuit conditions. This
test is to determine if the circuit is immune
to low level induced currents. The maximum
condition that it would have to withstand is
600V, 1A for 60 (sixty) one-second pulses
with the primary protector removed.
Second-Level AC Fault
The fuse will not become a fire, fragmentation,
or electrical safety hazard after the SecondLevel tests. The maximum condition that the
circuit would have to withstand is a primary
contact test at 600V, 60A for 5 seconds.
ESD Immunity Tests
This test consists of 10 (ten) discharges of
each polarity at 4KV and 15KV for a total of
40 (forty) discharges. The fuse must not open
during any of these tests.
There are several levels of protection
in GR-1089-CORE standard but the fuse
selection is determined by the type of
equipment requiring protection as well
as the level of protection that is needed.
www.littelfuse.com
P R O T E C T I O N
NEBS
P R O D U C T S
Introduction
Summary of Telecom Standards
Chart
Previous
Next
Contents
Glossary
Chart
Next
Power Distribution Protection
Power Distribution Protection
Telecommunications Power Fuse
L17T Series
Telecommunications Disconnect Switch
LTFD 6001 Series — 0 to 800 Amp
Specifically designed for short circuit
protection of telecommunications
circuits, Littelfuse L17T Series fuses
provide reliable protection of sensitive
DC power distribution systems.
Constructed with silver-plated elements
for low I2t and peak let-through, these
advanced fuses virtually eliminate
equipment damage due to surges and
spikes. The L17T Series fuse’s unique
element geometry also provides cooler
running temperatures, helping to minimize heat within enclosures.
Specifications
Littelfuse’s compact LTFD 6001 Series
Specifications
Voltage Rating:
170 VDC
holders are designed for use as a
Interrupting Rating:
100,000 amperes (UL Recognized)
switch for telecommunications equip-
Voltage Rating:
70 to 600 amperes @ 145 VDC
800 amperes @ 60 VDC
Ampere Range:
70 to 1200 amperes
fuse carrier to safely disconnect power
combination fuseholder and disconnect
ment. The rugged unit utilizes a pull-out
and provide easy fuse replacement.
Recommended Fuse Blocks:
LTFD 6001 Series
LTFD 1200 Series
Features
Features
•
145 VDC, 70 to 600 amperes
•
60 VDC, 800 amperes
Ampere Range:
70 to 800 amperes
Approvals:
UL Recognized (E122674)
Recommended Fuses:
Littelfuse L17T Series fuses
Dimensions
•
170 VDC rating
•
Very fast-acting
•
70 to 1200 amperes
•
Low I t
•
Extremely current limiting
•
Low operating temperature
F
G
2
H
A
B
C
D
E
Fig. 3
Dimensions
Ampere
Rating
A
1-5/32
70 – 250
(29.4)
1-1/4
300 – 800
(31.8)
1000 – 1200 1-11/32
(34.0)
B
1-7/8
(47.6)
1-15/16
(49.2)
—
Dimensions in Inches (mm)
C
D
E
F
2-3/16
2-21/32
1
7/8
(55.6)
(67.5)
(25.4)
(22.2)
2-9/16
3-1/2
1-1/2
1
(65.1)
(88.9)
(38.1)
(25.4)
4-1/16
1-1/2
—
—
(103.12)
(38.1)
G
5/16
(7.9)
13/32
(10.3)
—
H
3/16
(4.8)
1/4
(6.35)
1/4
(6.35)
Ordering Information & Cross-Reference
Catalog
Number
L17T 70
L17T 80
L17T 100
L17T 125
L17T 150
L17T 200
L17T 225
L17T 250
L17T 300
L17T 400
L17T 500
L17T 600
L17T 800
L17T 1000
L17T 1200
Ampere
Rating
70
80
100
125
150
200
225
250
300
400
500
600
800
1000
1200
Competitor A
Part Number
TPL-BA
TPL-BB
TPL-BD
TPL-BE
TPL-BF
TPL-BH
TPL-BK
TPL-BL
TPL-CN
TPL-CR
TPL-CV
TPL-CZ
—
—
—
Competitor B
Part Number
TGL-BA
TGL-BB
TGL-BD
TGL-BE
TGL-BF
TGL-BH
TGL-BK
TGL-BL
TGL-CN
TGL-CR
TGL-CV
TGL-CZ
TGL-CZH
—
—
Ordering Information
Catalog
Number
LTFD6001-00
LTFD6001-01
Stud Size
(A)
3/4 – 16 x 3.5 in.
7/8 – 14 x 3.5 in.
Amperes
70 – 600
70 – 800
Contact Nut
Max. Torque
100 feet-pound
120 feet-pound
Replaces Competitor’s 15100 Series
System number examples: LTFD6001ZX00, LTFD6001ZX01
Replaces Competitor’s TPL and TGL Series
10
www.littelfuse.com
www.littelfuse.com
11
Contents
Glossary
Power Distribution Protection
Telecommunications Power Fuse
L17T Series
Chart
Previous
Next
Power Distribution Protection
Telecommunications Disconnect Switch
LTFD 6001 Series — 0 to 800 Amp
Specifically designed for short circuit
protection of telecommunications
circuits, Littelfuse L17T Series fuses
provide reliable protection of sensitive
DC power distribution systems.
Constructed with silver-plated elements
for low I2t and peak let-through, these
advanced fuses virtually eliminate
equipment damage due to surges and
spikes. The L17T Series fuse’s unique
element geometry also provides cooler
running temperatures, helping to minimize heat within enclosures.
Specifications
Littelfuse’s compact LTFD 6001 Series
Specifications
Voltage Rating:
170 VDC
holders are designed for use as a
Interrupting Rating:
100,000 amperes (UL Recognized)
switch for telecommunications equip-
Voltage Rating:
70 to 600 amperes @ 145 VDC
800 amperes @ 60 VDC
Ampere Range:
70 to 1200 amperes
fuse carrier to safely disconnect power
combination fuseholder and disconnect
ment. The rugged unit utilizes a pull-out
and provide easy fuse replacement.
Recommended Fuse Blocks:
LTFD 6001 Series
LTFD 1200 Series
Features
Features
•
145 VDC, 70 to 600 amperes
•
60 VDC, 800 amperes
Ampere Range:
70 to 800 amperes
Approvals:
UL Recognized (E122674)
Recommended Fuses:
Littelfuse L17T Series fuses
Dimensions
•
170 VDC rating
•
Very fast-acting
•
70 to 1200 amperes
•
Low I t
•
Extremely current limiting
•
Low operating temperature
F
G
2
H
A
B
C
D
E
Fig. 3
Dimensions
Ampere
Rating
A
1-5/32
70 – 250
(29.4)
1-1/4
300 – 800
(31.8)
1000 – 1200 1-11/32
(34.0)
B
1-7/8
(47.6)
1-15/16
(49.2)
—
Dimensions in Inches (mm)
C
D
E
F
2-3/16
2-21/32
1
7/8
(55.6)
(67.5)
(25.4)
(22.2)
2-9/16
3-1/2
1-1/2
1
(65.1)
(88.9)
(38.1)
(25.4)
4-1/16
1-1/2
—
—
(103.12)
(38.1)
G
5/16
(7.9)
13/32
(10.3)
—
H
3/16
(4.8)
1/4
(6.35)
1/4
(6.35)
Ordering Information & Cross-Reference
Catalog
Number
L17T 70
L17T 80
L17T 100
L17T 125
L17T 150
L17T 200
L17T 225
L17T 250
L17T 300
L17T 400
L17T 500
L17T 600
L17T 800
L17T 1000
L17T 1200
Ampere
Rating
70
80
100
125
150
200
225
250
300
400
500
600
800
1000
1200
Competitor A
Part Number
TPL-BA
TPL-BB
TPL-BD
TPL-BE
TPL-BF
TPL-BH
TPL-BK
TPL-BL
TPL-CN
TPL-CR
TPL-CV
TPL-CZ
—
—
—
Competitor B
Part Number
TGL-BA
TGL-BB
TGL-BD
TGL-BE
TGL-BF
TGL-BH
TGL-BK
TGL-BL
TGL-CN
TGL-CR
TGL-CV
TGL-CZ
TGL-CZH
—
—
Ordering Information
Catalog
Number
LTFD6001-00
LTFD6001-01
Stud Size
(A)
3/4 – 16 x 3.5 in.
7/8 – 14 x 3.5 in.
Amperes
70 – 600
70 – 800
Contact Nut
Max. Torque
100 feet-pound
120 feet-pound
Replaces Competitor’s 15100 Series
System number examples: LTFD6001ZX00, LTFD6001ZX01
Replaces Competitor’s TPL and TGL Series
10
www.littelfuse.com
www.littelfuse.com
11
Contents
Glossary
Chart
Previous
Next
Power Distribution Protection
Power Distribution Protection
Telecom Disconnect Switch
LTFD 1200 Series — 900 to 1200 Amp
Telecommunications Power Fuse
TLN Series
Littelfuse’s new 1200 ampere
Specifications
The TLN Series fuses are specifically
Specifications
LTFD 1200-01 fuseholders are designed
Voltage Rating:
60 VDC
designed for the protection of
Voltage Rating:
170 VDC
Ampere Range:
900 to 1200 amperes
distribution circuits.
for high power applications where space
and costs are major concerns. This compact fuseholder is designed
specifically for 900 to 1200A applications
and can replace two conventional 600A
telecommunications DC power
Features
Approvals:
UL Recognized (File No. E122674)
holders. An optional integrated alarm
fuse circuit provides visual and remote
Interrupting Rating:
100,000 amperes
Dimensions
notification of a blown fuse. The
5.750"
positive connection and eliminates the
need for tools to replace blown fuses.
170 VDC
•
Fast-acting and current limiting
•
1 to 600 amperes
Approvals:
UL Recognized
Dimensions
6.750"
innovative pull-out design provides a
Ampere Range:
1 to 600 amperes
•
0.50"
ALARM
FUSE
CLEAR COVER FOR
CUSTOMER LABEL
3.0" 4.0"
A
A
F
K
Features
•
Compact
•
Vented for cool running operation
•
Quick fuse replacement
•
Optional integrated alarm
signaling circuit
Recommended Fuses
•
Littelfuse L17T Series fuses
•
Littelfuse 481 Series Alarm fuses
0.266" DIA. HOLE
WITH 0.50" X 0.156"
DEEP CORE
(4 PLACES)
0.50"
G
B
D
1.125-12
ALARM
TAB
7.625"
FIG. 2
Dimensions
Ampere
Rating
Figure 1
A
B
C
2
(50.8)
3
(76.2)
1/2
(12.7)
3/4
(19.1)
1/2
(12.7)
5/8
(15.9)
Dimensions in Inches (mm)
D
E
F
G
H
J
K
3/8
(9.5)
5/8
(15.9)
—
—
—
—
—
—
9/32
(7.1)
9/32
(7.1)
13/32
(10.3)
17/32
(13.5)
1/2
(12.7)
11/16
(17.5)
15/16
(23.8)
1-1/8
(28.6)
4.00"
1 – 30
1.313"
D
J
C
FIG. 1
3.625"
F
B
H
E
2.750"
E
C
2.625"
5.250"
35 – 60
9/16
(14.3)
13/16
(20.6)
5/64
(2.0)
3/32
(2.4)
5/32
(4.0)
3/16
(4.8)
1/8
(3.2)
3/16
(4.8)
1/4
(6.4)
1/4
(6.4)
3/4
1-1/4
1/4
(19.1) (31.6)
(6.4)
1-1/8 1-27/32 7/16
(28.6) (46.8) (11.1)
1-5/8 2-11/32
5/8
(41.3) (59.5) (15.9)
2
2-27/32
3/4
(50.8) (72.2) (19.1)
Figure 2
5-7/8
(149.2)
110 – 200 7-1/8
(181.0)
8-5/8
225 – 400 (219.1)
10-3/8
450 – 600 (263.5)
70 – 100
Ordering Information
Catalog Number
LTFD 1200-01
1
1-1/16 1-1/16
(25.4) (27.0) (27.0)
1-1/2 1-15/32 1-19/32
(38.1) (37.3) (40.5)
2
1-15/16 2-3/32
(50.8) (49.2) (53.2)
2-1/2
2-3/8 2-19/32
(63.5) (60.3) (65.9)
Ordering Information
Catalog
Number Amperage
TLN 1
1
TLN 3
3
TLN 5
5
TLN 6
6
TLN 10
10
TLN 15
15
TLN 20
20
TLN 25
25
Catalog
Number Amperage
TLN 30
30
TLN 35
35
TLN 40
40
TLN 45
45
TLN 50
50
TLN 60
60
TLN 70
70
TLN 80
80
Catalog
Number Amperage
TLN 90
90
TLN 100
100
TLN 110
110
TLN 125
125
TLN 150
150
TLN 175
175
TLN 200
200
TLN 225
225
Catalog
Number Amperage
TLN 250
250
TLN 300
300
TLN 350
350
TLN 400
400
TLN 450
450
TLN 500
500
TLN 600
600
Replaces Competitor’s TPN and TGN Series
12
www.littelfuse.com
www.littelfuse.com
13
Contents
Glossary
Power Distribution Protection
Telecom Disconnect Switch
LTFD 1200 Series — 900 to 1200 Amp
Chart
Previous
Power Distribution Protection
Telecommunications Power Fuse
TLN Series
Littelfuse’s new 1200 ampere
Specifications
The TLN Series fuses are specifically
Specifications
LTFD 1200-01 fuseholders are designed
Voltage Rating:
60 VDC
designed for the protection of
Voltage Rating:
170 VDC
Ampere Range:
900 to 1200 amperes
distribution circuits.
for high power applications where space
and costs are major concerns. This compact fuseholder is designed
specifically for 900 to 1200A applications
and can replace two conventional 600A
telecommunications DC power
Interrupting Rating:
100,000 amperes
Features
Approvals:
UL Recognized (File No. E122674)
holders. An optional integrated alarm
fuse circuit provides visual and remote
Dimensions
notification of a blown fuse. The
5.750"
positive connection and eliminates the
need for tools to replace blown fuses.
Ampere Range:
1 to 600 amperes
•
170 VDC
•
Fast-acting and current limiting
•
1 to 600 amperes
Approvals:
UL Recognized
Dimensions
6.750"
innovative pull-out design provides a
0.50"
ALARM
FUSE
CLEAR COVER FOR
CUSTOMER LABEL
3.0" 4.0"
A
A
F
K
Features
•
Compact
•
Vented for cool running operation
•
Quick fuse replacement
•
Optional integrated alarm
signaling circuit
Recommended Fuses
•
Littelfuse L17T Series fuses
•
Littelfuse 481 Series Alarm fuses
Next
0.266" DIA. HOLE
WITH 0.50" X 0.156"
DEEP CORE
(4 PLACES)
0.50"
G
B
D
1.125-12
ALARM
TAB
7.625"
FIG. 2
Dimensions
Ampere
Rating
Figure 1
A
B
C
2
(50.8)
3
(76.2)
1/2
(12.7)
3/4
(19.1)
1/2
(12.7)
5/8
(15.9)
Dimensions in Inches (mm)
D
E
F
G
H
J
K
3/8
(9.5)
5/8
(15.9)
—
—
—
—
—
—
9/32
(7.1)
9/32
(7.1)
13/32
(10.3)
17/32
(13.5)
1/2
(12.7)
11/16
(17.5)
15/16
(23.8)
1-1/8
(28.6)
4.00"
1 – 30
1.313"
D
J
C
FIG. 1
3.625"
F
B
H
E
2.750"
E
C
2.625"
5.250"
35 – 60
9/16
(14.3)
13/16
(20.6)
5/64
(2.0)
3/32
(2.4)
5/32
(4.0)
3/16
(4.8)
1/8
(3.2)
3/16
(4.8)
1/4
(6.4)
1/4
(6.4)
3/4
1-1/4
1/4
(19.1) (31.6)
(6.4)
1-1/8 1-27/32 7/16
(28.6) (46.8) (11.1)
1-5/8 2-11/32
5/8
(41.3) (59.5) (15.9)
2
2-27/32
3/4
(50.8) (72.2) (19.1)
Figure 2
5-7/8
(149.2)
110 – 200 7-1/8
(181.0)
8-5/8
225 – 400 (219.1)
10-3/8
450 – 600 (263.5)
70 – 100
Ordering Information
Catalog Number
LTFD 1200-01
1
1-1/16 1-1/16
(25.4) (27.0) (27.0)
1-1/2 1-15/32 1-19/32
(38.1) (37.3) (40.5)
2
1-15/16 2-3/32
(50.8) (49.2) (53.2)
2-1/2
2-3/8 2-19/32
(63.5) (60.3) (65.9)
Ordering Information
Catalog
Number Amperage
TLN 1
1
TLN 3
3
TLN 5
5
TLN 6
6
TLN 10
10
TLN 15
15
TLN 20
20
TLN 25
25
Catalog
Number Amperage
TLN 30
30
TLN 35
35
TLN 40
40
TLN 45
45
TLN 50
50
TLN 60
60
TLN 70
70
TLN 80
80
Catalog
Number Amperage
TLN 90
90
TLN 100
100
TLN 110
110
TLN 125
125
TLN 150
150
TLN 175
175
TLN 200
200
TLN 225
225
Catalog
Number Amperage
TLN 250
250
TLN 300
300
TLN 350
350
TLN 400
400
TLN 450
450
TLN 500
500
TLN 600
600
Replaces Competitor’s TPN and TGN Series
12
www.littelfuse.com
www.littelfuse.com
13
Contents
Glossary
Chart
Previous
Power Distribution Protection
Next
Power Distribution Protection
Telecommunications Power Fuse
TLS Series
Telecom Disconnect Switch
LTFD 101 Series
Littelfuse’s TLS Series fuses are
designed specifically for the protection
of telecommunications equipment.
TLS fuses have been engineered to
operate up to 170 VDC to provide
current limiting short circuit protection
for cables and components found in
the DC power distribution circuits of
telecommunications systems. The
TLS’ compact design provides superior
protection and high power density in
an extremely compact package.
Features
•
170 VDC
•
Current limiting
•
1 to 70 amperes
Specifications
Littelfuse’s compact LTFD 101 fuseholders
Specifications
Voltage Rating:
170 VDC
for TLS fuses are designed for quick
Voltage Rating:
80 VDC
Interrupting Rating:
100,000 amperes DC
panels. Their modular design fits into
Ampere Range:
1 to 100 amperes
breakers and they can be front panel
Approvals:
UL Recognized
connectors. The innovative new pull-out
Construction:
Caps: Silver-plated brass
Body: Glass melamine
to replace fuses and includes an alarm
Recommended Fuseholders:
LTFD101 Series disconnect switches
Features
installation into telecom equipment
spaces originally designed for circuit
mounted or rear mounted using bullet
signaling circuit to identify the blown fuse.
TLS
TLS-L
É”.562
.195
•
Extremely compact
•
Quick mounting
•
Replaces circuit breakers
•
Includes alarm signaling circuit
Approvals:
UL Recognized (File No. E122874)
Recommended Fuses
design eliminates the need for tools
Dimensions
Ampere Range:
1 to 100 amperes
•
Littelfuse TLS Series fuses
•
Littelfuse 481 Series Alarm fuses
É”.562
Dimensions
F L TLS 60A
F L TLS 60A
.880
.880 1.760
TLS 60L
TLS 60A
0.75"
6-32 INSERT
CL
3.75"
2.00"
0.305" Dia.
Bullet Terminal
0.85"
LOAD
Alarm pin
0.02" x 0.11"
position optional
2.50"
2.062"
Note: Contact factory for additional terminations.
1.940"
Ordering Information
Catalog
Number
TLS001
TLS003
TLS005
TLS006
TLS010
TLS015
TLS020
TLS025
TLS030
TLS035
TLS040
TLS050
TLS060
TLS070
TLS080
TLS090
TLS0100
Catalog Number
Leaded Version
TLS001L
TLS003L
TLS005L
TLS006L
TLS010L
TLS015L
TLS020L
TLS025L
TLS030L
TLS035L
TLS040L
TLS050L
TLS060L
TLS070L
—
—
—
Ampere
Rating
1
3
5
6
10
15
20
25
30
35
40
50
60
70
80
90
100
LINE
Ordering Information
Catalog Number
LTFD 101
Replaces Competitor’s TPS and TGS Series
14
www.littelfuse.com
www.littelfuse.com
15
Contents
Glossary
Power Distribution Protection
Telecommunications Power Fuse
TLS Series
Chart
Previous
Next
Power Distribution Protection
Telecom Disconnect Switch
LTFD 101 Series
Littelfuse’s TLS Series fuses are
designed specifically for the protection
of telecommunications equipment.
TLS fuses have been engineered to
operate up to 170 VDC to provide
current limiting short circuit protection
for cables and components found in
the DC power distribution circuits of
telecommunications systems. The
TLS’ compact design provides superior
protection and high power density in
an extremely compact package.
Features
•
170 VDC
•
Current limiting
•
1 to 70 amperes
Specifications
Littelfuse’s compact LTFD 101 fuseholders
Specifications
Voltage Rating:
170 VDC
for TLS fuses are designed for quick
Voltage Rating:
80 VDC
Interrupting Rating:
100,000 amperes DC
panels. Their modular design fits into
Ampere Range:
1 to 100 amperes
breakers and they can be front panel
Approvals:
UL Recognized
connectors. The innovative new pull-out
Construction:
Caps: Silver-plated brass
Body: Glass melamine
to replace fuses and includes an alarm
Recommended Fuseholders:
LTFD101 Series disconnect switches
Features
installation into telecom equipment
spaces originally designed for circuit
mounted or rear mounted using bullet
signaling circuit to identify the blown fuse.
TLS
TLS-L
É”.562
.195
•
Extremely compact
•
Quick mounting
•
Replaces circuit breakers
•
Includes alarm signaling circuit
Approvals:
UL Recognized (File No. E122874)
Recommended Fuses
design eliminates the need for tools
Dimensions
Ampere Range:
1 to 100 amperes
•
Littelfuse TLS Series fuses
•
Littelfuse 481 Series Alarm fuses
É”.562
Dimensions
F L TLS 60A
F L TLS 60A
.880
.880 1.760
TLS 60L
TLS 60A
0.75"
6-32 INSERT
CL
3.75"
2.00"
0.305" Dia.
Bullet Terminal
0.85"
LOAD
Alarm pin
0.02" x 0.11"
position optional
2.50"
2.062"
Note: Contact factory for additional terminations.
1.940"
Ordering Information
Catalog
Number
TLS001
TLS003
TLS005
TLS006
TLS010
TLS015
TLS020
TLS025
TLS030
TLS035
TLS040
TLS050
TLS060
TLS070
TLS080
TLS090
TLS0100
Catalog Number
Leaded Version
TLS001L
TLS003L
TLS005L
TLS006L
TLS010L
TLS015L
TLS020L
TLS025L
TLS030L
TLS035L
TLS040L
TLS050L
TLS060L
TLS070L
—
—
—
Ampere
Rating
1
3
5
6
10
15
20
25
30
35
40
50
60
70
80
90
100
LINE
Ordering Information
Catalog Number
LTFD 101
Replaces Competitor’s TPS and TGS Series
14
www.littelfuse.com
www.littelfuse.com
15
Contents
Glossary
Chart
Previous
Next
Power Distribution Protection
P R O T E C T I O N
P R O D U C T S
Notes:
Contents
Glossary
Power Distribution Protection
P R O T E C T I O N
P R O D U C T S
Notes:
Chart
Next
Contents
Chart
Glossary
Previous
Next
Electronic Overcurrent Protection
Electronic Overcurrent Protection
Alarm Indicating Fuse
481 Series
Alarm Indicating Fuseholder
482 Series
Features
Specifications
The flexible fuseholder design allows
Specifications
•
Approvals:
UL Recognized (E71611)
CSA Certified (LR29862)
for either panel mounting or direct
Approvals:
UL Recognized (E14721)
CSA Certified (LR7316)
Interrupting Ratings:
450 amperes @ 60 VDC
300 amperes @ 125 VAC (up to 20A)
300 amperes @ 125 VDC (up to 15A)
200 amperes @ 125 VDC (up to 20A)
in a single pole or ganged units up
•
•
Ideal for telecommunications and
control panel circuits
Eliminates down time by immediately
pinpointing the blown (open) circuit when
triggering LED or audio alarm, when
placed in mating holder (482 Series)
Clear plastic lens option available for
additional safety
Electrical Characteristics
% of Ampere
Rating
Opening Time
Minimum / Maximum
100
10 min. / —
150
— / 5 min.
Dimensions
22.9mm
(.90") MIN.
17.8mm (.70")
19.6mm
(.77") 11.7mm
(.46")
16.9mm
(.665") MAX.
LENS
21.3mm
(0.84")
REF.
Construction:
Body:
Terminations:
Optional Lens:
soldering to a PCB (printed circuit
board). Both styles can be supplied
to 20 poles.
Features
Packaging:
Available in five (5) packs or boxes
of one hundred (100). When ordering
a five (5) pack, please add the letter
‘V’ after the catalog number. When
ordering a one hundred (100) piece box,
add an ‘H’. To order the part with
a protective lens, add the letters ‘XL’
after the package code.
5.3mm
(.21")
Dimensions
Ordering Information
FEMALE & MALE LATCHING
WITHOUT TABS
31.8mm
(1.25")
21.3mm
(.84")
TYP
6.4mm
(.250") ±.005
12.4mm
(.49")
81.5mm
(.73")
Contact Littelfuse for nominal cold resistance
and melting I2t
Ampere
Rating
2-1/2
3
3-1/2
4
5
7-1/2
10
12
15
20
Dummy
Flag Color
Code
Orange/White
Blue
Blue/White
Brown/White
Green
Black/White
Red/White
Green/Yellow
Red/Blue
Green/White
—
Replaces Competitor’s GMT and AX Series
Ø 2.3mm HOLES
10.7mm
(.090")
(.420") ±.005
(3 HOLES)
6.4mm
(.250") ±.005
4.1mm
(.16")
TYP
RECOMMENDED P. C. BOARD
MOUNTING HOLES
Ordering Information
Catalog
Number
0481 02.5
0481 003
0481 03.5
0481 004
0481 005
0481 07.5
0481 010
0481 012
0481 015
0481 020
0481 000
20 amps @ 125 VAC/VDC
Fuse Terminal:
Beryllium-copper, tin-plated
TYPICAL 5 POLE
FEMALE LATCHING & FLUSH SIDE
HOLDER ASSEMBLY
WITHOUT TABS
Flag Color
Code
Yellow
Red/Black
Violet
Grey/White
Red
Black
Brown
Grey
White
Yellow/White
Orange
•
Molded Bodies:
Thermoplastic or black phenolic
(UL 94V-0) rating
Alarm Terminal:
Brass, tin-plated, wire wrap type
or PCB wave soldering
1.6mm
(.062")
TYP
Ampere
Rating
18/100
1/5
1/4
3/8
1/2
65/100
3/4
1
1-1/3
1-1/3
2
Gangable up to 20 poles
Terminals:
19.8mm
(.78" ± .03 )
TYP
Catalog
Number
0481.180
0481.200
0481.250
0481.375
0481.500
0481.650
0481.750
0481 001
0481 1.33
0481 01.5
0481 002
•
Polyphenylene
sulfide (UL 940V0)
Beryllium copper/
tin plated
Nylon
6.4mm
(.25")
TYP
5.8mm
(.23")
Electrical:
Rated @ 20 amperes for any voltage
up to 125 VAC, 125 VDC
FEMALE & MALE LATCHING
WITH TABS
25.4mm
(1")
31.8mm
(1.25")
FEMALE & MALE LATCHING
WITH TABS AND NO MOUNTING HOLES
37.1mm
(1.46")
6.4mm
(.25")
30.9mm (1.215")
30.7mm (1.210")
FEMALE LATCHING & FLUSH SIDE
WITH TABS
TYPICAL 5 POLE
HOLDER ASSEMBLY
30.9mm (1.215")
30.7mm (1.210")
21.3mm
(.84")
6.9mm
(.27" ± .005 )
15.7mm
(.62")
24.9mm
(.98" ±.03 )
1.5mm
(.06")
REF
0.5mm
(.02")
REF
9.0mm (.355")
12.4mm
18.5mm
(.73" ±.010 )
(.49" ±.010 )
Ø 4.1mm
(.160")
MOUNTING HOLE
(2 HOLES)
TYPICAL CUT-OUT IN
PANEL OR CHASSIS
RECOMMENDED PANEL
MOUNTING HOLES
21.8mm
(.86" ± .005 )
Catalog Number
PCB Mount
04820001ZXB
04820002ZXB
04820003ZXB
04820004ZXB
04820005ZXB
04820006ZXB
04820007ZXB
04820008ZXB
04820009ZXB
04820010ZXB
04820011ZXB
04820012ZXB
04820013ZXB
04820014ZXB
04820015ZXB
04820016ZXB
04820017ZXB
04820018ZXB
04820019ZXB
04820020ZXB
N/A
Add On Poles
04820AD1HXB
—
—
Catalog Number
Panel Mount
04820001ZXP
04820002ZXP
04820003ZXP
04820004ZXP
04820005ZXP
04820006ZXP
04820007ZXP
04820008ZXP
04820009ZXP
04820010ZXP
04820011ZXP
04820012ZXP
04820013ZXP
04820014ZXP
04820015ZXP
04820016ZXP
04820017ZXP
04820018ZXP
04820019ZXP
04820020ZXP
04822001ZXPF
Type
1 pole
2 pole
3 pole
4 pole
5 pole
6 pole
7 pole
8 pole
9 pole
10 pole
11 pole
12 pole
13 pole
14 pole
15 pole
16 pole
17 pole
18 pole
19 pole
20 pole
1 pole
Amperes
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
20
—
0482HAD1HXP
04820AD1HXP
PCB mount
Panel mount with mounting holes
Panel mount without mounting holes
15
15
Replaces Competitor’s HLS, HLT, PCT and HAX Series
18
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
19
Contents
Chart
Previous
Glossary
Electronic Overcurrent Protection
Alarm Indicating Fuse
481 Series
Next
Electronic Overcurrent Protection
Alarm Indicating Fuseholder
482 Series
Features
Specifications
The flexible fuseholder design allows
Specifications
•
Approvals:
UL Recognized (E71611)
CSA Certified (LR29862)
for either panel mounting or direct
Approvals:
UL Recognized (E14721)
CSA Certified (LR7316)
Interrupting Ratings:
450 amperes @ 60 VDC
300 amperes @ 125 VAC (up to 20A)
300 amperes @ 125 VDC (up to 15A)
200 amperes @ 125 VDC (up to 20A)
in a single pole or ganged units up
•
•
Ideal for telecommunications and
control panel circuits
Eliminates down time by immediately
pinpointing the blown (open) circuit when
triggering LED or audio alarm, when
placed in mating holder (482 Series)
Clear plastic lens option available for
additional safety
Electrical Characteristics
% of Ampere
Rating
Opening Time
Minimum / Maximum
100
10 min. / —
150
— / 5 min.
Dimensions
22.9mm
(.90") MIN.
17.8mm (.70")
19.6mm
(.77") 11.7mm
(.46")
16.9mm
(.665") MAX.
LENS
21.3mm
(0.84")
REF.
Construction:
Body:
Terminations:
Optional Lens:
soldering to a PCB (printed circuit
board). Both styles can be supplied
to 20 poles.
Features
Packaging:
Available in five (5) packs or boxes
of one hundred (100). When ordering
a five (5) pack, please add the letter
‘V’ after the catalog number. When
ordering a one hundred (100) piece box,
add an ‘H’. To order the part with
a protective lens, add the letters ‘XL’
after the package code.
5.3mm
(.21")
Dimensions
Ordering Information
FEMALE & MALE LATCHING
WITHOUT TABS
31.8mm
(1.25")
21.3mm
(.84")
TYP
6.4mm
(.250") ±.005
12.4mm
(.49")
81.5mm
(.73")
Contact Littelfuse for nominal cold resistance
and melting I2t
Ampere
Rating
2-1/2
3
3-1/2
4
5
7-1/2
10
12
15
20
Dummy
Flag Color
Code
Orange/White
Blue
Blue/White
Brown/White
Green
Black/White
Red/White
Green/Yellow
Red/Blue
Green/White
—
Replaces Competitor’s GMT and AX Series
Ø 2.3mm HOLES
10.7mm
(.090")
(.420") ±.005
(3 HOLES)
6.4mm
(.250") ±.005
4.1mm
(.16")
TYP
RECOMMENDED P. C. BOARD
MOUNTING HOLES
Ordering Information
Catalog
Number
0481 02.5
0481 003
0481 03.5
0481 004
0481 005
0481 07.5
0481 010
0481 012
0481 015
0481 020
0481 000
20 amps @ 125 VAC/VDC
Fuse Terminal:
Beryllium-copper, tin-plated
TYPICAL 5 POLE
FEMALE LATCHING & FLUSH SIDE
HOLDER ASSEMBLY
WITHOUT TABS
Flag Color
Code
Yellow
Red/Black
Violet
Grey/White
Red
Black
Brown
Grey
White
Yellow/White
Orange
•
Molded Bodies:
Thermoplastic or black phenolic
(UL 94V-0) rating
Alarm Terminal:
Brass, tin-plated, wire wrap type
or PCB wave soldering
1.6mm
(.062")
TYP
Ampere
Rating
18/100
1/5
1/4
3/8
1/2
65/100
3/4
1
1-1/3
1-1/3
2
Gangable up to 20 poles
Terminals:
19.8mm
(.78" ± .03 )
TYP
Catalog
Number
0481.180
0481.200
0481.250
0481.375
0481.500
0481.650
0481.750
0481 001
0481 1.33
0481 01.5
0481 002
•
Polyphenylene
sulfide (UL 940V0)
Beryllium copper/
tin plated
Nylon
6.4mm
(.25")
TYP
5.8mm
(.23")
Electrical:
Rated @ 20 amperes for any voltage
up to 125 VAC, 125 VDC
FEMALE & MALE LATCHING
WITH TABS
25.4mm
(1")
31.8mm
(1.25")
FEMALE & MALE LATCHING
WITH TABS AND NO MOUNTING HOLES
37.1mm
(1.46")
6.4mm
(.25")
30.9mm (1.215")
30.7mm (1.210")
FEMALE LATCHING & FLUSH SIDE
WITH TABS
TYPICAL 5 POLE
HOLDER ASSEMBLY
30.9mm (1.215")
30.7mm (1.210")
21.3mm
(.84")
6.9mm
(.27" ± .005 )
15.7mm
(.62")
24.9mm
(.98" ±.03 )
1.5mm
(.06")
REF
0.5mm
(.02")
REF
9.0mm (.355")
12.4mm
18.5mm
(.73" ±.010 )
(.49" ±.010 )
Ø 4.1mm
(.160")
MOUNTING HOLE
(2 HOLES)
TYPICAL CUT-OUT IN
PANEL OR CHASSIS
RECOMMENDED PANEL
MOUNTING HOLES
21.8mm
(.86" ± .005 )
Catalog Number
PCB Mount
04820001ZXB
04820002ZXB
04820003ZXB
04820004ZXB
04820005ZXB
04820006ZXB
04820007ZXB
04820008ZXB
04820009ZXB
04820010ZXB
04820011ZXB
04820012ZXB
04820013ZXB
04820014ZXB
04820015ZXB
04820016ZXB
04820017ZXB
04820018ZXB
04820019ZXB
04820020ZXB
N/A
Add On Poles
04820AD1HXB
—
—
Catalog Number
Panel Mount
04820001ZXP
04820002ZXP
04820003ZXP
04820004ZXP
04820005ZXP
04820006ZXP
04820007ZXP
04820008ZXP
04820009ZXP
04820010ZXP
04820011ZXP
04820012ZXP
04820013ZXP
04820014ZXP
04820015ZXP
04820016ZXP
04820017ZXP
04820018ZXP
04820019ZXP
04820020ZXP
04822001ZXPF
Type
1 pole
2 pole
3 pole
4 pole
5 pole
6 pole
7 pole
8 pole
9 pole
10 pole
11 pole
12 pole
13 pole
14 pole
15 pole
16 pole
17 pole
18 pole
19 pole
20 pole
1 pole
Amperes
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
20
—
0482HAD1HXP
04820AD1HXP
PCB mount
Panel mount with mounting holes
Panel mount without mounting holes
15
15
Replaces Competitor’s HLS, HLT, PCT and HAX Series
18
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
19
Contents
Chart
Glossary
Previous
Next
Electronic Overcurrent Protection
Electronic Overcurrent Protection
Alarm Indicating Fuse
70 Series
Telecom Surface Mount Fuse
NANO2 461 Series
®
The 70 Series alarm indicating fuses are
Specifications
Features
Specifications
designed for use in telecommunications
Approvals:
UL Recognized
•
Surface mount overcurrent protection
from lightning and power cross
Approvals:
UL Recognized, CSA Certified
•
Meets UL1459/1950 power cross
requirements stand alone
•
Ideal for use in telecommunications
equipment including modems,
fax machines, desktop phones,
answering machines and line cards
Short Circuit Capabilities
(UL 1459/UL 1950 3rd ed.)
40 amperes @ 600 VAC
7 amperes @ 600 VAC
2.2 amperes @ 600 VAC
equipment. A color-coded tip provides
visual identification of the ampere rating
and the fuse status.
Interrupting Ratings:
1000 amperes @ 125 VAC
1000 amperes @ 300 VDC
Features
•
Color coded tip
•
Rated 125 VAC, 300 VDC
•
Ordering Information
10 Minute
Rating
100mA
150mA
180mA
200mA
250mA
250mA
350mA
500mA
750mA
1.33A
2A
3A
3.5A
5A
8A
10A
Interrupting Ratings:
50 amperes @ 250 VAC
Materials:
Body:
Terminators:
Complies with Bellcore GR-1089-CORE
and FCC 47 Part 68 surge specifications
Ceramic
Silver-plated brass caps
Overvoltage/AC Power Fault (Power Cross) Requirements:
Catalog
Number
70P
70R
70E
70X
70F
70K
70S
70G
70H
70A
70B
70C
70J
70D
70M
70N
System
Number
70P00000Z
70R00000Z
70E00000Z
70X00000Z
70F00000Z
70K00000Z
70S00000Z
70G00000Z
70H00000Z
70A00000Z
70B00000Z
70C00000Z
70J00000Z
70D00000Z
70M00000Z
70N00000Z
Color
Code
Grey/White
Red/White
Yellow
Black
Violet
Violet/White
Gray
Red
Brown
White
Orange
Blue
Black/White
Green/Black
Tan/White
Yellow/Purple
The most severe tests are listed, Telecom Nano2 will pass lower level test as well.
Standard/
Test
GR-1089
GR-1089
UL 1950 3rd Edition
GR-1089
UL 1950 3rd Edition
GR-1809
UL 1950 3rd Edition
GR-1809
UL 1950 3rd Edition
Dimensions
10.10
(.397")
LF 1.25A T
3.12
(.123")
3.12
(.123")
Source
Voltage
(VAC)
1000
600
600
600
Surge
Current
(A)
5
601
40
7
Duration
0.5 sec.
5 sec.
1.5 sec.
5 sec.
Rating
for Compliance
Stand Alone2
1.25A
1.25A
0.5, 1.25A
0.5, 1.25A
100-600
2.2
30 min.
0.5, 1.25A
277
120
25
25
15 min.
30 min.
0.5, 1.25A
0.5, 1.25A
1
The 1.25 rating is designed to enable equipment compliance with GR-1089. Application testing is strongly
recommended as actual application and compliance testing will produce random closing angle surge conditions.
Actual circuit resistance may enhance equipment performance under surge conditions.
2
See UL 1950 for test procedures for fuses and testing at 135%.
3.25
(.128")
Environmental/Lightning Surge Requirements
6.10
(.240")
3.43
(.135")
12.6
(.496")
Standard/
Test
GR-1089 1st Level
Electrical Specifications
% of Ampere
Rating
Opening Time
Minimum / Maximum
100
4 hrs. / —
250
1 sec. /120 sec.
GR-1089 2nd Level
FCC 47 Part 68
Type A Metallic
FCC 47 Part 68
Type A Longitudinal
FCC 47 Part 68
Type B Metallic
FCC 47 Part 68
Type B Longitudinal
Source
Voltage
(Vpk)
600
1000
1000
2500
1000
5000
800
Duration/
Wave Form
(µSec.)
10 x 1000
10 x 360
10 x 1000
2 x 10
10 x 360
2 x 10
10 x 560
Surge
Current
(A)
100
100
100
500
25
500
100
Repetitions
(Each
Polarity)
25
25
25
10
5
1
1
Rating
for Compliance
Stand Alone3
1.25A
1.25A
1.25A
1.25A
0.5, 1.25A
1.25A
1.25A
1500
10 x 160
200
1
1.25A
1000
voltage 9 x 720
current 5 x 320
voltage 9 x 720
current 5 x 320
25
1
0.5, 1.25A
37.5
1
0.5, 1.25A
1500
3
Additional series resistance used in conjunction with the fuse may allow compliance by fuse ratings not listed.
Ordering Information
Catalog
Number
0461 .500
0461 1.25
4
20
Consult Littelfuse web site for more information
www.littelfuse.com
Ampere
Rating
1/2
1-1/4
Voltage
Rating
250
250
Nominal
Resistance
(Cold Ω)
.56
.110
Nominal
Melting I 2 t
(A2 Sec.)
.84
16.54
I 2 t is calculated at 10 msec or less. I 2 t at 10 times rated current has a typical value of 22 A2sec (1.25A).
Consult Littelfuse web site for more information
www.littelfuse.com
21
Contents
Chart
Previous
Glossary
Electronic Overcurrent Protection
Alarm Indicating Fuse
70 Series
Next
Electronic Overcurrent Protection
Telecom Surface Mount Fuse
NANO2 461 Series
®
The 70 Series alarm indicating fuses are
Specifications
Features
Specifications
designed for use in telecommunications
Approvals:
UL Recognized
•
Surface mount overcurrent protection
from lightning and power cross
Approvals:
UL Recognized, CSA Certified
•
Meets UL1459/1950 power cross
requirements stand alone
•
Ideal for use in telecommunications
equipment including modems,
fax machines, desktop phones,
answering machines and line cards
Short Circuit Capabilities
(UL 1459/UL 1950 3rd ed.)
40 amperes @ 600 VAC
7 amperes @ 600 VAC
2.2 amperes @ 600 VAC
equipment. A color-coded tip provides
visual identification of the ampere rating
and the fuse status.
Interrupting Ratings:
1000 amperes @ 125 VAC
1000 amperes @ 300 VDC
Features
•
Color coded tip
•
Rated 125 VAC, 300 VDC
•
Ordering Information
10 Minute
Rating
100mA
150mA
180mA
200mA
250mA
250mA
350mA
500mA
750mA
1.33A
2A
3A
3.5A
5A
8A
10A
Interrupting Ratings:
50 amperes @ 250 VAC
Materials:
Body:
Terminators:
Complies with Bellcore GR-1089-CORE
and FCC 47 Part 68 surge specifications
Ceramic
Silver-plated brass caps
Overvoltage/AC Power Fault (Power Cross) Requirements:
Catalog
Number
70P
70R
70E
70X
70F
70K
70S
70G
70H
70A
70B
70C
70J
70D
70M
70N
System
Number
70P00000Z
70R00000Z
70E00000Z
70X00000Z
70F00000Z
70K00000Z
70S00000Z
70G00000Z
70H00000Z
70A00000Z
70B00000Z
70C00000Z
70J00000Z
70D00000Z
70M00000Z
70N00000Z
Color
Code
Grey/White
Red/White
Yellow
Black
Violet
Violet/White
Gray
Red
Brown
White
Orange
Blue
Black/White
Green/Black
Tan/White
Yellow/Purple
The most severe tests are listed, Telecom Nano2 will pass lower level test as well.
Standard/
Test
GR-1089
GR-1089
UL 1950 3rd Edition
GR-1089
UL 1950 3rd Edition
GR-1809
UL 1950 3rd Edition
GR-1809
UL 1950 3rd Edition
Dimensions
10.10
(.397")
LF 1.25A T
3.12
(.123")
3.12
(.123")
Source
Voltage
(VAC)
1000
600
600
600
Surge
Current
(A)
5
601
40
7
Duration
0.5 sec.
5 sec.
1.5 sec.
5 sec.
Rating
for Compliance
Stand Alone2
1.25A
1.25A
0.5, 1.25A
0.5, 1.25A
100-600
2.2
30 min.
0.5, 1.25A
277
120
25
25
15 min.
30 min.
0.5, 1.25A
0.5, 1.25A
1
The 1.25 rating is designed to enable equipment compliance with GR-1089. Application testing is strongly
recommended as actual application and compliance testing will produce random closing angle surge conditions.
Actual circuit resistance may enhance equipment performance under surge conditions.
2
See UL 1950 for test procedures for fuses and testing at 135%.
3.25
(.128")
Environmental/Lightning Surge Requirements
6.10
(.240")
3.43
(.135")
12.6
(.496")
Standard/
Test
GR-1089 1st Level
Electrical Specifications
% of Ampere
Rating
Opening Time
Minimum / Maximum
100
4 hrs. / —
250
1 sec. /120 sec.
GR-1089 2nd Level
FCC 47 Part 68
Type A Metallic
FCC 47 Part 68
Type A Longitudinal
FCC 47 Part 68
Type B Metallic
FCC 47 Part 68
Type B Longitudinal
Source
Voltage
(Vpk)
600
1000
1000
2500
1000
5000
800
Duration/
Wave Form
(µSec.)
10 x 1000
10 x 360
10 x 1000
2 x 10
10 x 360
2 x 10
10 x 560
Surge
Current
(A)
100
100
100
500
25
500
100
Repetitions
(Each
Polarity)
25
25
25
10
5
1
1
Rating
for Compliance
Stand Alone3
1.25A
1.25A
1.25A
1.25A
0.5, 1.25A
1.25A
1.25A
1500
10 x 160
200
1
1.25A
1000
voltage 9 x 720
current 5 x 320
voltage 9 x 720
current 5 x 320
25
1
0.5, 1.25A
37.5
1
0.5, 1.25A
1500
3
Additional series resistance used in conjunction with the fuse may allow compliance by fuse ratings not listed.
Ordering Information
Catalog
Number
0461 .500
0461 1.25
4
20
Consult Littelfuse web site for more information
www.littelfuse.com
Ampere
Rating
1/2
1-1/4
Voltage
Rating
250
250
Nominal
Resistance
(Cold Ω)
.56
.110
Nominal
Melting I 2 t
(A2 Sec.)
.84
16.54
I 2 t is calculated at 10 msec or less. I 2 t at 10 times rated current has a typical value of 22 A2sec (1.25A).
Consult Littelfuse web site for more information
www.littelfuse.com
21
Contents
Chart
Glossary
Previous
Next
Electronic Overcurrent Protection
Electronic Overcurrent Protection
SMTelecom Fuse
436 Series
Subminiature Surface Mount Fuse
NANO2 SMF Slo-Blo Series
®
®
®
Features
Specifications
The very small NANO2 Fuse with time
Specifications
•
Short Circuit Capabilities
(UL 1459/UL 1950 3rd ed.)
40 amperes @ 600 VAC
7 amperes @ 600 VAC
2.2 amperes @ 600 VAC
delay performance characteristics.
Interrupting Ratings:
50 amperes @ 125 VAC
50 amperes @ 125 VDC
300 amperes @ 32 VDC
Surface mount overcurrent protection
from lightning and power cross
•
Meets UL 1459/1950 power cross
requirements stand alone
•
Ideal for use in telecommunications
equipment including modems,
fax machines, desktop phones,
answering machines, and line cards
UL recognized, with a 250V
operating voltage
Top side marking allows visual
verification of ampere rating
•
Complies with Bellcore GR-1089-CORE
and FCC 47 Part 68 surge specifications
Materials:
Body:
Melamine substrate
Terminations:
Copper/nickel/
tin-lead (95/5)
Dimensions
436
3/4A
.590"
NICKEL/TIN-LEAD PLATED
COPPER TERMINATIONS
.200"
Electrical Characteristics
.095" MAX.
.520"
nuisance “opening” by accommodating
fast-acting fuse to open.
.165"
.050"
.025" REF.
% of Ampere
Rating
Opening Time
Minimum / Maximum
100
4 hrs. / —
250
5 sec. / 30 sec.
Approvals:
UL Recognized (UL E10480)
CSA Certified (LR29862)
Materials:
Body:
Approvals:
UL Recognized (UL E10480)
CSA Certified (LR29862)
•
PROTECTIVE
COATING
fuse design helps solve the problem of
inrush currents that normally cause a
Interrupting Ratings:
10,000 amperes @ 125 V
100 amperes @ 250 V
,
n
g
i
es
d
e
w
c
e
n
n
e
r
r
o
e
f
F
e
r
e
s
a
e
1
pl
2
the
e
g
a
P
/
s
e
i
r
e
S
1
6
4
•
The unique time delay feature of this
Ceramic
Terminations:
Dimensions
Electrical Characteristics
6.86
(.270")
6.10
(.240")
3.15
(.124")
LF T
1A
2.95
(.116")
1.96
(.077")
Recommended pad layout
Tin-lead alloy or silver
plated brass caps
1.45
(.057")
2.69
(.106")
Note: Metric dimensions shown.
Inch dimensions are in parentheses.
% of Ampere
Rating
Opening Time
Minimum / Maximum
100
4 hrs. / —
200
1 sec. / 60 sec.
300
0.2 sec. / 3 sec.
800
0.02 sec. / 0.1 sec.
2.69
(.106")
.405"
.180"
.115"
Performance Characteristics
Catalog
Number
Repetitions:
0436.750
0436 001
0436 1.25
0436 01.5
0436 01.6
FCC 47 Part 68
Longitudinal Surge
Metallic Surge
10x160µSec.
10x560µSec.
(1500V)
(800V)
50
2
50
2
82A
88A
29A
32A
102A
117A
44A
48A
120A
135A
87A
95A
175A
200A
100A
115A
200A
200A
134A
156A
Bellcore GR-1089-CORE
First Level Lightning
10x1000µSec.
2x10µSec.
(1000V)
(2500V)
50
20
22A
225A
37A
350A
56A
425A
80A
500A
100A
500A
Ordering Information
Catalog
Number
0436.750
0436 001
0436 1.25
0436 01.5
0436 01.6
22
Ampere
Rating
3/4
1
1-1/4
1-1/2
1-6/10
Voltage
Rating
250
250
250
250
250
Consult Littelfuse web site for more information
Nominal
Resistance
(Cold Ω)
0.850
0.475
0.305
0.210
0.165
Ordering Information
Catalog
Number
(Tin-Lead Plated)
R452.375
R452.500
R452.750
R452 001
R452 01.5
R452 002
R452 02.5
R452 003
R452 03.5
R452 004
R452 005
Catalog
Number
(Silver-Plated)
0454.375
0454.500
0454.750
0454 001
0454 01.5
0454 002
0454 02.5
0454 003
0454 03.5
0454 004
0454 005
Ampere
Rating
3/8
1/2
3/4
1
1-1/2
2
2-1/2
3
3-1/2
4
5
Voltage
Rating
125
125
125
125
125
125
125
125
125
125
125
Nominal
Resistance
(Cold Ω)
1.20
0.700
0.360
0.225
0.0930
0.0625
0.0450
0.0340
0.0224
0.0186
0.0136
Nominal
Melting I2 t
(A2 Sec.)
0.101
0.240
0.904
1.98
3.65
8.20
15.0
20.16
26.53
34.40
53.72
Nominal
Melting I2t
(A2 Sec.)
1.143
2.606
3.658
5.921
13.500
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
23
Contents
Chart
Previous
Glossary
Electronic Overcurrent Protection
SMTelecom Fuse
436 Series
Next
Electronic Overcurrent Protection
Subminiature Surface Mount Fuse
NANO2 SMF Slo-Blo Series
®
®
®
Features
Specifications
The very small NANO2 Fuse with time
Specifications
•
Short Circuit Capabilities
(UL 1459/UL 1950 3rd ed.)
40 amperes @ 600 VAC
7 amperes @ 600 VAC
2.2 amperes @ 600 VAC
delay performance characteristics.
Interrupting Ratings:
50 amperes @ 125 VAC
50 amperes @ 125 VDC
300 amperes @ 32 VDC
Surface mount overcurrent protection
from lightning and power cross
•
Meets UL 1459/1950 power cross
requirements stand alone
•
Ideal for use in telecommunications
equipment including modems,
fax machines, desktop phones,
answering machines, and line cards
UL recognized, with a 250V
operating voltage
Top side marking allows visual
verification of ampere rating
•
Complies with Bellcore GR-1089-CORE
and FCC 47 Part 68 surge specifications
Materials:
Body:
Melamine substrate
Terminations:
Copper/nickel/
tin-lead (95/5)
Dimensions
436
3/4A
.590"
NICKEL/TIN-LEAD PLATED
COPPER TERMINATIONS
.200"
Electrical Characteristics
.095" MAX.
.520"
nuisance “opening” by accommodating
fast-acting fuse to open.
.165"
.050"
.025" REF.
% of Ampere
Rating
Opening Time
Minimum / Maximum
100
4 hrs. / —
250
5 sec. / 30 sec.
Approvals:
UL Recognized (UL E10480)
CSA Certified (LR29862)
Materials:
Body:
Approvals:
UL Recognized (UL E10480)
CSA Certified (LR29862)
•
PROTECTIVE
COATING
fuse design helps solve the problem of
inrush currents that normally cause a
Interrupting Ratings:
10,000 amperes @ 125 V
100 amperes @ 250 V
,
n
g
i
es
d
e
w
c
e
n
n
e
r
r
o
e
f
F
e
r
e
s
a
e
1
pl
2
the
e
g
a
P
/
s
e
i
r
e
S
1
6
4
•
The unique time delay feature of this
Ceramic
Terminations:
Dimensions
Electrical Characteristics
6.86
(.270")
6.10
(.240")
3.15
(.124")
LF T
1A
2.95
(.116")
1.96
(.077")
Recommended pad layout
Tin-lead alloy or silver
plated brass caps
1.45
(.057")
2.69
(.106")
Note: Metric dimensions shown.
Inch dimensions are in parentheses.
% of Ampere
Rating
Opening Time
Minimum / Maximum
100
4 hrs. / —
200
1 sec. / 60 sec.
300
0.2 sec. / 3 sec.
800
0.02 sec. / 0.1 sec.
2.69
(.106")
.405"
.180"
.115"
Performance Characteristics
Catalog
Number
Repetitions:
0436.750
0436 001
0436 1.25
0436 01.5
0436 01.6
FCC 47 Part 68
Longitudinal Surge
Metallic Surge
10x160µSec.
10x560µSec.
(1500V)
(800V)
50
2
50
2
82A
88A
29A
32A
102A
117A
44A
48A
120A
135A
87A
95A
175A
200A
100A
115A
200A
200A
134A
156A
Bellcore GR-1089-CORE
First Level Lightning
10x1000µSec.
2x10µSec.
(1000V)
(2500V)
50
20
22A
225A
37A
350A
56A
425A
80A
500A
100A
500A
Ordering Information
Catalog
Number
0436.750
0436 001
0436 1.25
0436 01.5
0436 01.6
22
Ampere
Rating
3/4
1
1-1/4
1-1/2
1-6/10
Voltage
Rating
250
250
250
250
250
Consult Littelfuse web site for more information
Nominal
Resistance
(Cold Ω)
0.850
0.475
0.305
0.210
0.165
Ordering Information
Catalog
Number
(Tin-Lead Plated)
R452.375
R452.500
R452.750
R452 001
R452 01.5
R452 002
R452 02.5
R452 003
R452 03.5
R452 004
R452 005
Catalog
Number
(Silver-Plated)
0454.375
0454.500
0454.750
0454 001
0454 01.5
0454 002
0454 02.5
0454 003
0454 03.5
0454 004
0454 005
Ampere
Rating
3/8
1/2
3/4
1
1-1/2
2
2-1/2
3
3-1/2
4
5
Voltage
Rating
125
125
125
125
125
125
125
125
125
125
125
Nominal
Resistance
(Cold Ω)
1.20
0.700
0.360
0.225
0.0930
0.0625
0.0450
0.0340
0.0224
0.0186
0.0136
Nominal
Melting I2 t
(A2 Sec.)
0.101
0.240
0.904
1.98
3.65
8.20
15.0
20.16
26.53
34.40
53.72
Nominal
Melting I2t
(A2 Sec.)
1.143
2.606
3.658
5.921
13.500
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
23
Chart
Previous
Electronic Overcurrent Protection
Electronic Overcurrent Protection
NANO2 Surface Mount Fuse
SMF OMNI-BLOK Fuse Block Molded Base Type
®
Subminiature Surface Mount Fuse
NANO2 SMF Very Fast-Acting Series
®
®
The very small NANO2 Fuse with very
fast-acting performance characteristics.
Specifications
Approvals:
UL Recognized (UL E10480)
CSA Certified (LR29862)
MITI Approved (1 to 5 ampere)
The SMF Omni-Blok Fuseholder permits
quick and easy replacement of
NANO2
SMF surface mount fuses. The fuse block
and pre-installed fuse combination
Materials:
Body:
Interrupting Ratings:
1/16 – 8A
50 amperes @ 125 VAC/VDC
300 amperes @ 32 VDC
Dimensions
can be placed on the PC board in one
Ceramic
Terminations:
Approvals:
UL Recognized
CSA Certified
Tin-lead alloy or silver
plated brass caps
efficient manufacturing operation. Fuse
replacement is accomplished without
.150"
.084"
REF.
exposing the PC board to the detrimental
10A
35 amperes @ 125 VAC
50 amperes @ 125 VDC
300 amperes @ 32 VDC
Electrical Characteristics
% of Ampere Amp
Rating
Rating
12A – 15A
50 amperes @ 65 VAC/VDC
300 amperes @ 24 VDC
effects of solder heat.
Opening Time
Minimum / Maximum
100
1/16 – 15
4 hrs. / —
200
1/16 – 10
— / 5 sec.
200
12 – 15
— / 20 sec.
.167"
.418"
Recommended Pad Layout
1
5
5
Glossary
Next
LF
7A
L
F
Contents
.383" REF.
FUSE
.150"
Dimensions
Ordering Information
6.86
(.270")
6.10
(.240")
3.15
(.124")
LF T
1A
2.95
1.96 (.116")
(.077")
Recommended pad layout
1.45
(.057")
Note: Metric dimensions shown.
Inch dimensions are in parentheses.
24
2.69
(.106")
2.69
(.106")
Catalog
Number
(Tin-Lead Plated)
—
—
—
—
R451.160
R451.200
R451.250
R451.315
R451.375
R451.400
R451.500
R451.630
R451.750
R451.800
R451 001
R451 1.25
R451 01.5
R451 01.6
R451 002
R451 02.5
R451 003
R451 3.15
R451 03.5
R451 004
R451 005
R451 06.3
R451 007
R451 008
R451 010
R451 012
R451 015
Catalog
Number
(Silver-Plated)
R451.062
R451.080
R451.100
R451.125
0453.160
0453.200
0453.250
0.453.315
0453.375
0453.400
0453.500
0453.630
0453.750
0453.800
0453 001
0453 1.25
0453 01.5
0453 01.6
0453 002
0453 02.5
0453 003
0453 3.15
0453 03.5
0453 004
0453 005
0453 06.3
0453 007
0453 008
0453 010
0453 012
0453 015
.198"
Ampere
Rating
0.062
0.080
0.100
0.125
0.160
0.200
0.250
0.315
0.375
0.400
0.500
0.630
0.750
0.800
1.0
1.25
1.5
1.6
2.0
2.5
3.0
3.15
3.5
4
5
6.3
7
8
10
12
15
Consult Littelfuse web site for more information
Voltage
Rating
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
65
65
Nominal
Resistance
(Cold Ω)
5.50
4.05
3.10
1.70
1.80
1.40
1.05
0.78
0.610
0.560
0.420
0.305
0.245
0.212
0.153
0.0780
0.0630
0.0580
0.0367
0.0286
0.0227
0.0215
0.0200
0.0160
0.0125
0.0096
0.0090
0.0077
0.0056
0.0049
0.0037
Nominal
Melting I2 t
(A2 Sec.)
0.00019
0.00033
0.00138
0.00286
0.00306
0.00652
0.01126
0.0231
0.0425
0.0484
0.0795
0.143
0.185
0.271
0.459
0.664
0.853
1.060
0.530
1.029
1.650
1.920
2.469
3.152
5.566
9.17
10.32
20.23
26.46
47.97
97.82
www.littelfuse.com
Ordering Information
With Very Fast-Acting Fuse Installed
Catalog
Ampere
Fuse
Number
Rating
Furnished1
154.062
1/16
0453.062
154.125
1/8
0453.125
154.250
1/4
0453.250
154.375
3/8
0453.375
154.500
1/2
0453.500
154.750
3/4
0453.750
154 001
1
0453 001
154 01.5
1.5
0453 01.5
154 002
2
0453 002
154 02.5
2.5
0453 02.5
154 003
3
0453 003
154 03.5
3.5
0453 03.5
154 004
4
0453 004
154 005
5
0453 005
154 007
7
0453 007
With Slo-Blo® Fuse Installed
Catalog
Ampere
Fuse
Number
Rating
Furnished2
154.375T
3/8
0454.375
154.500T
1/2
0454.500
154.750T
3/4
0454.750
154 001T
1
0454 001
154 01.5T
1-1/2
0454 01.5
154 002T
2
0454 002
154 02.5T
2-1/2
0454 02.5
154 003T
3
0454 003
154 03.5T
3-1/2
0454 03.5
154 004T
4
0454 004
154 005T
5
0454 005
—
—
—
—
—
—
—
—
—
—
—
—
1
454 Series Fuse has silver plated end caps, installed to accommodate solder reflow process.
Use either 451 or 453 Series for replacement purposes.
2
454 Series Fuse has silver plated end caps, installed to accommodate solder reflow process.
Use either 452 or 454 Series for replacement purposes.
Consult Littelfuse web site for more information
www.littelfuse.com
25
Contents
Chart
Previous
Glossary
Electronic Overcurrent Protection
Next
Electronic Overcurrent Protection
NANO2 Surface Mount Fuse
SMF OMNI-BLOK Fuse Block Molded Base Type
®
Subminiature Surface Mount Fuse
NANO2 SMF Very Fast-Acting Series
®
®
The very small NANO2 Fuse with very
fast-acting performance characteristics.
Specifications
Approvals:
UL Recognized (UL E10480)
CSA Certified (LR29862)
MITI Approved (1 to 5 ampere)
The SMF Omni-Blok Fuseholder permits
quick and easy replacement of
NANO2
SMF surface mount fuses. The fuse block
and pre-installed fuse combination
Materials:
Body:
Interrupting Ratings:
1/16 – 8A
50 amperes @ 125 VAC/VDC
300 amperes @ 32 VDC
Dimensions
can be placed on the PC board in one
Ceramic
Terminations:
Approvals:
UL Recognized
CSA Certified
Tin-lead alloy or silver
plated brass caps
efficient manufacturing operation. Fuse
replacement is accomplished without
.150"
.084"
REF.
exposing the PC board to the detrimental
% of Ampere Amp
Rating
Rating
12A – 15A
50 amperes @ 65 VAC/VDC
300 amperes @ 24 VDC
effects of solder heat.
Opening Time
Minimum / Maximum
100
1/16 – 15
4 hrs. / —
200
1/16 – 10
— / 5 sec.
200
12 – 15
— / 20 sec.
Recommended Pad Layout
1
5
5
Electrical Characteristics
.167"
.418"
LF
7A
L
F
10A
35 amperes @ 125 VAC
50 amperes @ 125 VDC
300 amperes @ 32 VDC
.383" REF.
FUSE
.150"
Dimensions
Ordering Information
6.86
(.270")
6.10
(.240")
3.15
(.124")
LF T
1A
2.95
1.96 (.116")
(.077")
Recommended pad layout
1.45
(.057")
Note: Metric dimensions shown.
Inch dimensions are in parentheses.
24
2.69
(.106")
2.69
(.106")
Catalog
Number
(Tin-Lead Plated)
—
—
—
—
R451.160
R451.200
R451.250
R451.315
R451.375
R451.400
R451.500
R451.630
R451.750
R451.800
R451 001
R451 1.25
R451 01.5
R451 01.6
R451 002
R451 02.5
R451 003
R451 3.15
R451 03.5
R451 004
R451 005
R451 06.3
R451 007
R451 008
R451 010
R451 012
R451 015
Catalog
Number
(Silver-Plated)
R451.062
R451.080
R451.100
R451.125
0453.160
0453.200
0453.250
0.453.315
0453.375
0453.400
0453.500
0453.630
0453.750
0453.800
0453 001
0453 1.25
0453 01.5
0453 01.6
0453 002
0453 02.5
0453 003
0453 3.15
0453 03.5
0453 004
0453 005
0453 06.3
0453 007
0453 008
0453 010
0453 012
0453 015
.198"
Ampere
Rating
0.062
0.080
0.100
0.125
0.160
0.200
0.250
0.315
0.375
0.400
0.500
0.630
0.750
0.800
1.0
1.25
1.5
1.6
2.0
2.5
3.0
3.15
3.5
4
5
6.3
7
8
10
12
15
Consult Littelfuse web site for more information
Voltage
Rating
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
65
65
Nominal
Resistance
(Cold Ω)
5.50
4.05
3.10
1.70
1.80
1.40
1.05
0.78
0.610
0.560
0.420
0.305
0.245
0.212
0.153
0.0780
0.0630
0.0580
0.0367
0.0286
0.0227
0.0215
0.0200
0.0160
0.0125
0.0096
0.0090
0.0077
0.0056
0.0049
0.0037
Nominal
Melting I2 t
(A2 Sec.)
0.00019
0.00033
0.00138
0.00286
0.00306
0.00652
0.01126
0.0231
0.0425
0.0484
0.0795
0.143
0.185
0.271
0.459
0.664
0.853
1.060
0.530
1.029
1.650
1.920
2.469
3.152
5.566
9.17
10.32
20.23
26.46
47.97
97.82
www.littelfuse.com
Ordering Information
With Very Fast-Acting Fuse Installed
Catalog
Ampere
Fuse
Number
Rating
Furnished1
154.062
1/16
0453.062
154.125
1/8
0453.125
154.250
1/4
0453.250
154.375
3/8
0453.375
154.500
1/2
0453.500
154.750
3/4
0453.750
154 001
1
0453 001
154 01.5
1.5
0453 01.5
154 002
2
0453 002
154 02.5
2.5
0453 02.5
154 003
3
0453 003
154 03.5
3.5
0453 03.5
154 004
4
0453 004
154 005
5
0453 005
154 007
7
0453 007
With Slo-Blo® Fuse Installed
Catalog
Ampere
Fuse
Number
Rating
Furnished2
154.375T
3/8
0454.375
154.500T
1/2
0454.500
154.750T
3/4
0454.750
154 001T
1
0454 001
154 01.5T
1-1/2
0454 01.5
154 002T
2
0454 002
154 02.5T
2-1/2
0454 02.5
154 003T
3
0454 003
154 03.5T
3-1/2
0454 03.5
154 004T
4
0454 004
154 005T
5
0454 005
—
—
—
—
—
—
—
—
—
—
—
—
1
454 Series Fuse has silver plated end caps, installed to accommodate solder reflow process.
Use either 451 or 453 Series for replacement purposes.
2
454 Series Fuse has silver plated end caps, installed to accommodate solder reflow process.
Use either 452 or 454 Series for replacement purposes.
Consult Littelfuse web site for more information
www.littelfuse.com
25
Contents
Glossary
Chart
Previous
Electronic Overcurrent Protection
Next
Electronic Overcurrent Protection
Thin-Film Surface Mount Fuse
SlimLine 0603 Very Fast-Acting Type 434 Series
Thin-Film Surface Mount Fuse
1206 SMF Very Fast-Acting Type 429/433 Series
Features
Specifications
Features
Specifications
•
The SlimLine 0603 is an extremely small,
low profile design (0603 chip size) utilizing
thin-film technology to achieve precise
control of electrical characteristics
Interrupting Ratings:
.25 to 1A
50A @ 32 VAC/VDC
1.25 to 5A 35A @ 32 VAC/VDC
•
The 1206 SMF is an extremely small, low
profile design (1206 chip size) utilizing
thin-film technology to achieve precise
control of electrical characteristics
Interrupting Ratings:
0.125 to 3A 50A @ rated voltage AC/DC
4 to 7A
35A @ rated voltage AC/DC
•
The lower height profile produces a
flat surface for improved performance
in pick-and-place operations and an
alternate solution for height
critical applications
•
New one-piece element/termination
design assures extra reliability by
eliminating the need for soldering,
welding or other joining operations
in the manufacture of the fuse
•
Approvals:
UL Recognized (UL E10480)
CSA Certified (LR29862)
Dimensions
Mounting pad and electrical
specification are identical to the
popular 431 Series specifications
1.60
(.063")
.127
(.005")
•
.305
(.012")
Sn /Pb
.813
(.032")
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE CHART)
Semi-rigid substrate eliminates the
potential for thermal shock fractures
and decreases the risk of mechanical
damage during pick-and-place operations
Approvals:
UL Recognized (UL E10480)
CSA Certified (LR29862)
Materials:
Body:
Terminations:
Cover Coat:
Epoxy substrate
Copper/nickel/
tin-lead (95/5)
Conformal coating
.279
(.011")
Dimensions (433 Series)
Sn /Pb
.18
R (.007")
3.18
(.125")
REF.
Electrical Characteristics
Opening Time
Minimum / Maximum
100
4 hrs. / —
200
300
— / 5 sec.
1.02
(.040")
3.20
(.126")
2.54
(.100")
1.02
(.040")
.762
(.030")
REFLOW SOLDER
WAVE SOLDER
— / 0.2 sec.
26
Ampere
Rating
1/4
3/8
1/2
3/4
1
1-1/4
1-1/2
1-3/4
2
2-1/2
3
3-1/2
4
5
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE CHART)
Sn /Pb
.56
(.022")
1.52
(.060")
1.09
(.043")
1.09
(.043")
Electrical Characteristics
3.18
(.125")
1.65
(.065")
1.52
(.060")
4.83
(.190")
3.81
(.150")
Marking
Code
D
E
F
G
H
J
K
L
N
O
P
R
S
T
Consult Littelfuse web site for more information
Voltage
Rating
32
32
32
32
32
32
32
32
32
32
32
32
32
32
Nominal
Resistance
(Cold Ω)
0.375
0.265
0.193
0.114
0.072
0.054
0.048
0.039
0.036
0.028
0.023
0.019
0.017
0.013
Nominal
Melting I2t
(A2 Sec.)
0.0030
0.0053
0.0087
0.0171
0.0210
0.0320
0.0526
0.0661
0.104
0.175
0.198
0.265
0.352
1.297
www.littelfuse.com
% of Ampere
Rating
Opening Time
Minimum / Maximum
100
4 hrs. / —
1.52
(.060")
1.14
(.045")
2.03
(.080")
REFLOW SOLDER
2.03
(.080")
WAVE SOLDER
Ordering Information
Catalog
Number
0434.250
0434.375
0434.500
0434.750
0434 001
0434 1.25
0434 01.5
0434 1.75
0434 002
0434 02.5
0434 003
0434 03.5
0434 004
0434 005
.58
(.023")
1.27
(.050")
1.09
(.043")
% of Ampere
Rating
.64
(.025")
(4)
Sn /Pb
200
— / 5 sec.
300
— / 0.2 sec.
Ordering Information
Catalog
Number
0433.125
0433.200
0433.250
0433.375
0433.500
0433.600
0433.750
0433.800
0433 001
0433 1.25
0433 01.5
0433 1.75
0433 002.
0433 02.5
0433 003
429 004
429 005
429 007
Ampere
Rating
.125
.200
.250
.375
.50
.60
.75
.80
1
1.25
1.5
1.75
2
2.5
3
4
5
7
Marking
Code
B
C
D
E
F
.6
G
.8
H
J
K
L
N
O
P
FS
FT
FU
Consult Littelfuse web site for more information
Voltage
Rating
125
125
125
125
63
63
63
63
63
63
63
63
63
32
32
24
24
24
Nominal
Resistance
(Cold Ω)
3.45
0.938
0.625
0.375
0.2405
0.2100
0.1370
0.1225
0.09950
0.07475
0.06250
0.05000
0.03975
0.03065
0.02625
0.01926
0.01375
0.00925
Melting I2 t
(A2 Sec.)
0.00040
0.00055
0.0010
0.0028
0.0060
0.0131
0.0170
0.0305
0.0350
0.0650
0.125
0.150
0.230
0.50
0.70
1.18
2.12
4.90
www.littelfuse.com
27
Contents
Glossary
Electronic Overcurrent Protection
Thin-Film Surface Mount Fuse
SlimLine 0603 Very Fast-Acting Type 434 Series
Chart
Previous
Electronic Overcurrent Protection
Thin-Film Surface Mount Fuse
1206 SMF Very Fast-Acting Type 429/433 Series
Features
Specifications
Features
Specifications
•
The SlimLine 0603 is an extremely small,
low profile design (0603 chip size) utilizing
thin-film technology to achieve precise
control of electrical characteristics
Interrupting Ratings:
.25 to 1A
50A @ 32 VAC/VDC
1.25 to 5A 35A @ 32 VAC/VDC
•
The 1206 SMF is an extremely small, low
profile design (1206 chip size) utilizing
thin-film technology to achieve precise
control of electrical characteristics
Interrupting Ratings:
0.125 to 3A 50A @ rated voltage AC/DC
4 to 7A
35A @ rated voltage AC/DC
•
The lower height profile produces a
flat surface for improved performance
in pick-and-place operations and an
alternate solution for height
critical applications
•
New one-piece element/termination
design assures extra reliability by
eliminating the need for soldering,
welding or other joining operations
in the manufacture of the fuse
•
Next
Approvals:
UL Recognized (UL E10480)
CSA Certified (LR29862)
Dimensions
Mounting pad and electrical
specification are identical to the
popular 431 Series specifications
1.60
(.063")
.127
(.005")
•
.305
(.012")
Sn /Pb
.813
(.032")
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE CHART)
Semi-rigid substrate eliminates the
potential for thermal shock fractures
and decreases the risk of mechanical
damage during pick-and-place operations
Approvals:
UL Recognized (UL E10480)
CSA Certified (LR29862)
Materials:
Body:
Terminations:
Cover Coat:
Epoxy substrate
Copper/nickel/
tin-lead (95/5)
Conformal coating
.279
(.011")
Dimensions (433 Series)
Sn /Pb
.18
R (.007")
3.18
(.125")
REF.
Electrical Characteristics
Opening Time
Minimum / Maximum
100
4 hrs. / —
200
300
— / 5 sec.
1.02
(.040")
3.20
(.126")
2.54
(.100")
1.02
(.040")
.762
(.030")
REFLOW SOLDER
WAVE SOLDER
— / 0.2 sec.
26
Ampere
Rating
1/4
3/8
1/2
3/4
1
1-1/4
1-1/2
1-3/4
2
2-1/2
3
3-1/2
4
5
MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE CHART)
Sn /Pb
.56
(.022")
1.52
(.060")
1.09
(.043")
1.09
(.043")
Electrical Characteristics
3.18
(.125")
1.65
(.065")
1.52
(.060")
4.83
(.190")
3.81
(.150")
Marking
Code
D
E
F
G
H
J
K
L
N
O
P
R
S
T
Consult Littelfuse web site for more information
Voltage
Rating
32
32
32
32
32
32
32
32
32
32
32
32
32
32
Nominal
Resistance
(Cold Ω)
0.375
0.265
0.193
0.114
0.072
0.054
0.048
0.039
0.036
0.028
0.023
0.019
0.017
0.013
Nominal
Melting I2t
(A2 Sec.)
0.0030
0.0053
0.0087
0.0171
0.0210
0.0320
0.0526
0.0661
0.104
0.175
0.198
0.265
0.352
1.297
www.littelfuse.com
% of Ampere
Rating
Opening Time
Minimum / Maximum
100
4 hrs. / —
1.52
(.060")
1.14
(.045")
2.03
(.080")
REFLOW SOLDER
2.03
(.080")
WAVE SOLDER
Ordering Information
Catalog
Number
0434.250
0434.375
0434.500
0434.750
0434 001
0434 1.25
0434 01.5
0434 1.75
0434 002
0434 02.5
0434 003
0434 03.5
0434 004
0434 005
.58
(.023")
1.27
(.050")
1.09
(.043")
% of Ampere
Rating
.64
(.025")
(4)
Sn /Pb
200
— / 5 sec.
300
— / 0.2 sec.
Ordering Information
Catalog
Number
0433.125
0433.200
0433.250
0433.375
0433.500
0433.600
0433.750
0433.800
0433 001
0433 1.25
0433 01.5
0433 1.75
0433 002.
0433 02.5
0433 003
429 004
429 005
429 007
Ampere
Rating
.125
.200
.250
.375
.50
.60
.75
.80
1
1.25
1.5
1.75
2
2.5
3
4
5
7
Marking
Code
B
C
D
E
F
.6
G
.8
H
J
K
L
N
O
P
FS
FT
FU
Consult Littelfuse web site for more information
Voltage
Rating
125
125
125
125
63
63
63
63
63
63
63
63
63
32
32
24
24
24
Nominal
Resistance
(Cold Ω)
3.45
0.938
0.625
0.375
0.2405
0.2100
0.1370
0.1225
0.09950
0.07475
0.06250
0.05000
0.03975
0.03065
0.02625
0.01926
0.01375
0.00925
Melting I2 t
(A2 Sec.)
0.00040
0.00055
0.0010
0.0028
0.0060
0.0131
0.0170
0.0305
0.0350
0.0650
0.125
0.150
0.230
0.50
0.70
1.18
2.12
4.90
www.littelfuse.com
27
Contents
Chart
Previous
Glossary
Next
Electronic Overcurrent Protection
Subminiature Radial Lead and Cartridge Fuses
LT-5™ Series
Features
Subminiature Glass Body Axial Lead and Cartridge Fuses
2AG Slo-Blo Surge Withstand Series
®
Specifications
Fast-Acting 662 Series,
Time Lag 663 Series and
Time Lag Extended Breaking 664 Series
Interrupting Ratings:
(662 Series; 663 Series) 35A @ 250 VAC
(664 Series) 100A @ 250 VAC
•
Fuses available in three different
performance options/series
•
Provide similar performance to
conventional glass fuses, while
occupying 70% less space
Approvals:
(662 Series)
IEC 60127-3/1: Semko and VDE
approved 50mA through 3.15A
(663 Series; 664 Series)
IEC 60127-3/1: Semko and VDE
approved through 4A
UL Recognized/CSA Certified
•
Available in various lead configurations
to be used in through-hole applications
or with the available fuseholder.
Parts also available on Tape & Reel.
Electronic Overcurrent Protection
2AG Surge Withstand Fuses combine
conventional overcurrent protection
with the ability to withstand high current,
short duration pulses. These fuses comply
with the short circuit requirements of
UL 1459 for telephone equipment.
Insulating sleeve option available.
Features
•
•
Fuses rated .250 to 1.25A comply
with the short circuit requirements of
UL 1459/1950 3rd Edition (2.2, 7 & 40A
@600 VAC)
•
Leaded fuses are board washable
•
Provide the same performance
characteristics as 3AG Fuses, while
occupying 1/3 the space
Electrical Characteristics
% of Ampere
Rating
210
275
400
1000
662 Series
Opening Time
Minimum / Maximum
— / 30 min.
0.010 sec. / 3 sec.
0.003 sec. / 0.030 sec.
— / 0.020 sec.
663 Series
Opening Time
Minimum / Maximum
— / 2 min.
.4 sec. / 10 sec.
.15 sec. / 3 sec.
.02 sec. / .15 sec.
664 Series
Opening Time
Minimum / Maximum
— / 2 min.
.4 sec. / 10 sec.
.1 sec. / 3 sec.
.02 sec. / .15 sec.
These fuses will withstand 50 repetitions
of a double exponential impulse wave
having peak currents (lp) and peak
voltages as listed
Peak Withstand Current
Ordering Information
Dimensions
8.5
(.335")
1.45
(.057")
8.5
(.335")
8.45
(.333")
8.45
(.333")
1.45
(.057")
4.3
(.169")
0.64
(.025")
18.8
(.740")
5.08
(.200")
0.64
(.025")
5.08
(.200")
Ampere
Rating
.050
.063
.080
.100
.125
.160
.200
.250
.315
.400
.500
.630
.800
1.00
1.25
1.60
2.00
2.50
3.15
4.00
5.00
6.30
662 Series
Nominal
Catalog Melting I2t
Number (A2 Sec.)
0662.050
0.004
0662.063
0.001
0662.080
0.001
0662.100
0.002
0662.125
0.006
0662.160
0.014
0662.200
0.024
0662.250
0.058
0662.315
0.104
0662.400
0.044
0662.500
0.090
0662.630
0.150
0662.800
0.220
0662 001
0.330
0662 1.25
0.680
0662 01.6
0.940
0662 002
1.330
0662 02.5
1.940
0662 3.15
5.400
0662 004
7.900
0662 005
11.190
—
—
663 Series
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
0663.050
0.03
0663.063
0.05
0663.080
0.07
0663.100
0.08
0663.125
0.12
0663.160
0.24
0663.200
0.35
0663.250
0.6
0663.315
0.8
0663.400
1.1
0663.500
2.5
0663.630
4
0663.800
8
0663 001
12
0663 1.25
15
0663 01.6
30
0663 002
34
0663 02.5
55
0663 3.15
76
0663 004
80
0663 005
230
0663 06.3
360
664 Series
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0664.800
2.2
0664 001
4.4
0064 1.25
6.3
0664 01.6
10
0664 002
16
0664 02.5
32
0664 3.15
57
0664 004
77
0664 005
155
0664 06.3
262
Note: All fuses listed are rated @ 250 VAC
Ampere
Rating
1/4
35/100
3/8
1/2
6/10
3/4
8/10
1
1-1/4*
Specifications
Interrupting Ratings:
1/4 to 1-1/4A
10,000A @ 125 VAC
1/4 to 1A
35A @ 250 VAC
1-1/4A
100A @ 250 VAC
Short Circuit:
UL 1459 / UL 1950 3rd Edt.:
40A, 600 VAC
7A, 600 VAC
2.2A, 600 VAC
Approvals:
UL Recognized (E10480)
CSA Certified (LR29862)
Construction:
Caps:
Nickel-plated brass
Body:
Glass
Insulating sleeve option available
Dimensions
10 x 160 10 x 560 10 x 1000
microsec. microsec. microsec.
1500V
800V
1000V
23.0A
16.6A
12.4A
34.0A
25.8A
19.3A
40.0A
25.4A
19.0A
60.0A
37.7A
28.2A
71.0A
47.2A
35.3A
91.0A
65.5A
49.0A
104.0A
68.9A
51.6A
130.0A
88.6A
66.3A
162.0A
118.1A
100.0A
229 Series
230 Series
.025"
.177"
.19"
.57"
.60"
1.50"
TYP.
* 500A peak, 2500V, 2x10 microseconds, 20 repetitions
Ordering Information
Catalog
Number
(Cartridge)
229.250
229.350
229.375
229.500
229.600
229.750
229.800
229 001
229 1.25
Catalog
Number
(Axial Lead)
230.250
230.350
230.375
230.500
230.600
230.750
230.800
230 001
230 1.25
Ampere
Rating
1/4
35/100
3/8
1/2
6/10
3/4
8/10
1
1-1/4
Voltage
Rating
250
250
250
250
250
250
250
250
250
Nominal
Resistance
(Cold Ω)
2.410
1.300
1.160
0.688
0.477
0.340
0.304
0.210
0.145
Nominal
Melting I2 t
(A2 Sec.)
0.216
0.490
0.580
1.16
1.75
2.95
3.45
5.64
9.80
Note: LF Logo, series number, amperage rating, voltage rating, and UL and CSA logos are stamped on fuse caps.
For more Slo-Blo ratings, see the Electronic Designers Guide, EC101-G.
28
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
29
Contents
Electronic Overcurrent Protection
Subminiature Radial Lead and Cartridge Fuses
LT-5™ Series
Features
Interrupting Ratings:
(662 Series; 663 Series) 35A @ 250 VAC
(664 Series) 100A @ 250 VAC
•
Fuses available in three different
performance options/series
•
Provide similar performance to
conventional glass fuses, while
occupying 70% less space
Approvals:
(662 Series)
IEC 60127-3/1: Semko and VDE
approved 50mA through 3.15A
(663 Series; 664 Series)
IEC 60127-3/1: Semko and VDE
approved through 4A
UL Recognized/CSA Certified
Electronic Overcurrent Protection
2AG Surge Withstand Fuses combine
conventional overcurrent protection
with the ability to withstand high current,
short duration pulses. These fuses comply
with the short circuit requirements of
UL 1459 for telephone equipment.
Insulating sleeve option available.
Features
•
662 Series
Opening Time
Minimum / Maximum
— / 30 min.
0.010 sec. / 3 sec.
0.003 sec. / 0.030 sec.
— / 0.020 sec.
663 Series
Opening Time
Minimum / Maximum
— / 2 min.
.4 sec. / 10 sec.
.15 sec. / 3 sec.
.02 sec. / .15 sec.
664 Series
Opening Time
Minimum / Maximum
— / 2 min.
.4 sec. / 10 sec.
.1 sec. / 3 sec.
.02 sec. / .15 sec.
These fuses will withstand 50 repetitions
of a double exponential impulse wave
having peak currents (lp) and peak
voltages as listed
•
Fuses rated .250 to 1.25A comply
with the short circuit requirements of
UL 1459/1950 3rd Edition (2.2, 7 & 40A
@600 VAC)
•
Leaded fuses are board washable
•
Provide the same performance
characteristics as 3AG Fuses, while
occupying 1/3 the space
Electrical Characteristics
% of Ampere
Rating
210
275
400
1000
Peak Withstand Current
Ordering Information
Dimensions
8.5
(.335")
1.45
(.057")
8.5
(.335")
8.45
(.333")
8.45
(.333")
1.45
(.057")
4.3
(.169")
0.64
(.025")
18.8
(.740")
5.08
(.200")
0.64
(.025")
5.08
(.200")
Ampere
Rating
.050
.063
.080
.100
.125
.160
.200
.250
.315
.400
.500
.630
.800
1.00
1.25
1.60
2.00
2.50
3.15
4.00
5.00
6.30
662 Series
Nominal
Catalog Melting I2t
Number (A2 Sec.)
0662.050
0.004
0662.063
0.001
0662.080
0.001
0662.100
0.002
0662.125
0.006
0662.160
0.014
0662.200
0.024
0662.250
0.058
0662.315
0.104
0662.400
0.044
0662.500
0.090
0662.630
0.150
0662.800
0.220
0662 001
0.330
0662 1.25
0.680
0662 01.6
0.940
0662 002
1.330
0662 02.5
1.940
0662 3.15
5.400
0662 004
7.900
0662 005
11.190
—
—
Next
®
Specifications
Available in various lead configurations
to be used in through-hole applications
or with the available fuseholder.
Parts also available on Tape & Reel.
Glossary
Previous
Subminiature Glass Body Axial Lead and Cartridge Fuses
2AG Slo-Blo Surge Withstand Series
Fast-Acting 662 Series,
Time Lag 663 Series and
Time Lag Extended Breaking 664 Series
•
Chart
663 Series
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
0663.050
0.03
0663.063
0.05
0663.080
0.07
0663.100
0.08
0663.125
0.12
0663.160
0.24
0663.200
0.35
0663.250
0.6
0663.315
0.8
0663.400
1.1
0663.500
2.5
0663.630
4
0663.800
8
0663 001
12
0663 1.25
15
0663 01.6
30
0663 002
34
0663 02.5
55
0663 3.15
76
0663 004
80
0663 005
230
0663 06.3
360
664 Series
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0664.800
2.2
0664 001
4.4
0064 1.25
6.3
0664 01.6
10
0664 002
16
0664 02.5
32
0664 3.15
57
0664 004
77
0664 005
155
0664 06.3
262
Note: All fuses listed are rated @ 250 VAC
Ampere
Rating
1/4
35/100
3/8
1/2
6/10
3/4
8/10
1
1-1/4*
Specifications
Interrupting Ratings:
1/4 to 1-1/4A
10,000A @ 125 VAC
1/4 to 1A
35A @ 250 VAC
1-1/4A
100A @ 250 VAC
Short Circuit:
UL 1459 / UL 1950 3rd Edt.:
40A, 600 VAC
7A, 600 VAC
2.2A, 600 VAC
Approvals:
UL Recognized (E10480)
CSA Certified (LR29862)
Construction:
Caps:
Nickel-plated brass
Body:
Glass
Insulating sleeve option available
Dimensions
10 x 160 10 x 560 10 x 1000
microsec. microsec. microsec.
1500V
800V
1000V
23.0A
16.6A
12.4A
34.0A
25.8A
19.3A
40.0A
25.4A
19.0A
60.0A
37.7A
28.2A
71.0A
47.2A
35.3A
91.0A
65.5A
49.0A
104.0A
68.9A
51.6A
130.0A
88.6A
66.3A
162.0A
118.1A
100.0A
229 Series
230 Series
.025"
.177"
.19"
.57"
.60"
1.50"
TYP.
* 500A peak, 2500V, 2x10 microseconds, 20 repetitions
Ordering Information
Catalog
Number
(Cartridge)
229.250
229.350
229.375
229.500
229.600
229.750
229.800
229 001
229 1.25
Catalog
Number
(Axial Lead)
230.250
230.350
230.375
230.500
230.600
230.750
230.800
230 001
230 1.25
Ampere
Rating
1/4
35/100
3/8
1/2
6/10
3/4
8/10
1
1-1/4
Voltage
Rating
250
250
250
250
250
250
250
250
250
Nominal
Resistance
(Cold Ω)
2.410
1.300
1.160
0.688
0.477
0.340
0.304
0.210
0.145
Nominal
Melting I2 t
(A2 Sec.)
0.216
0.490
0.580
1.16
1.75
2.95
3.45
5.64
9.80
Note: LF Logo, series number, amperage rating, voltage rating, and UL and CSA logos are stamped on fuse caps.
For more Slo-Blo ratings, see the Electronic Designers Guide, EC101-G.
28
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
29
Contents
Chart
Previous
Glossary
Next
Electronic Overcurrent Protection
Electronic Overcurrent Protection
IEC Standard Axial Lead and Cartridge Fuses
5 x 20mm Series
UL/CSA Standard Axial Lead and Cartridge Fuses
5 x 20mm Series
Features
5 x 20mm Fast-Acting Fuses
216 and 217 Series, and
Time Lag Fuses 218 Series:
•
Designed to IEC standards for global use
•
Meets the IEC 60127-2, Sheet 1 and 2
specification for fast-acting fuses,
Sheet 3 specifications for time lag fuses
•
Available in cartridge and axial lead form
•
Available in ratings of 0.032 to 10A
Specifications
Features
Interrupting Ratings:
(216 Series) 1500A
(217/218 Series) 35A or 10 x rated
current, whichever is greater
5 x 20mm Medium-Acting Fuses
233 Series, Fast-Acting 235 Series,
and Time Lag Fuses 239 Series:
Approvals:
(216/217/218 Series)
IEC 60127-2/127-2
Semko approved through 6.3A
VDE approved .05 to 6.3A
BSI approved 1A to 6.3A
UL Recognized/CSA Certified
•
Designed to UL/CSA/ANCE
248 standard
•
Available in cartridge and axial
lead format
•
Available in ratings of 0.200 to 5A
.032 – .100A
.125 – 6.3A
150
210
275
400
1000
150
210
275
400
1000
60 min. / —
— / 30 min.
0.01 sec. / 2 sec.
0.003 sec. / 0.3 sec.
— / 0.02 sec.
60 min. / —
— / 30 min.
0.01 sec. / 3 sec.
0.003 sec. / 0.3 sec.
— / 0.02 sec.
217/227 Series
Opening Time
Minimum / Maximum
218/228 Series
Opening Time
Minimum / Maximum
60 min. / —
— / 30 min.
0.01 sec. / 5 sec.
0.003 sec. / 0.1 sec.
— / 0.02 sec.
60 min. / —
— / 30 min.
0.05 sec. / 2 sec.
0.01 sec. / 0.3 sec.
— / 0.02 sec.
60 min. / —
— / 2 min.
0.2 sec. / 10 sec.
0.04 sec. / 3 sec.
0.01 sec. / 0.3 sec.
60 min. / —
— / 2 min.
0.6 sec. / 10 sec.
0.15 sec. / 3 sec.
0.01 sec. / 0.3 sec.
1 to 3.5A
4 to 6.3A
Dimensions
Ordering Information
216/217/218 Series
226/227/228 Series
.635
(.025")
5
(.197")
30
20
(.787")
5.25
(.207")
22.5
(.886")
40
(1.58")
Ampere
Rating
216/226 Series
(Fast-Acting)
Nominal
Catalog Melting I2t
Number (A2 Sec.)
.635
(.025")
217/227 Series
(Fast-Acting)
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
218/228 Series
(Time Lag)
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
0.032
—
—
217.032
0.000048
218.032
0.00305
0.040
—
—
217.040
0.000074
218.040
0.0055
0.050
216.050
0.00019
217.050
0.00020
218.050
0.0071
0.063
216.063
0.00055
217.063
0.00057
218.063
0.012
0.080
216.080
0.00086
217.080
0.00085
218.080
0.0265
0.100
216.100
0.0033
217.100
0.0034
218.100
0.0495
0.125
216.125
0.0056
217.125
0.0049
218.125
0.150
0.160
216.160
0.0018
217.160
0.011
218.160
0.225
0.200
216.200
0.0045
217.200
0.025
218.200
0.350
0.250
216.250
0.0092
217.250
0.043
218.250
0.555
0.315
216.315
0.015
217.315
0.110
218.315
1.14
0.400
216.400
0.028
217.400
0.130
218.400
1.35
0.500
216.500
0.045
217.500
0.225
218.500
2.90
0.630
216.630
0.097
217.630
0.420
218.630
4.80
0.800
216.800
0.18
217.800
0.870
218.800
1.99
1
216 001
0.19
217 001
1.07
218 001
3.33
1.25
216 1.25
0.49
217 1.25
2.29
218 1.25
5.80
1.6
216 01.6
1.04
217 01.6
4.74
218 01.6
10.61
2
216 002
1.92
217 002
5.88
218 002
14.80
2.5
216 02.5
2.77
217 02.5
9.72
218 02.5
23.85
3.15
216 3.15
7.85
217 3.15
18.2
218 3.15
39.20
4
216 004
15.4
217 004
30.0
218 004
70.95
5
216 005
28.2
217 005
43.9
218 005
114.0
6.3
216 06.3
57.9
217 06.3
64.2
218 06.3
204.0
8
216 008
66.1
217 008
203.5
218 008
350.5
10
216 010
158.5
217 010
223.5
218 010
583.0
15
—
—
—
—
218 015
1441.0
Note: For axial leads in 216, 217, and 218 Series, change catalog numbers from 216 to 226, 217 to 227, and 218
to 228. All fuses listed are rated @ 250 VAC.
Consult Littelfuse web site for more information
www.littelfuse.com
5
(.197")
20
(.787")
233/233xe Series
% of Ampere
Opening Time
Rating
Minimum / Maximum
110
4 hrs. / —
135
— / 1 hr.
200
— / 3 sec.
110
1 hr. / —
— / 1 hr.
135
200
— / 3 sec.
235/236 Series
Opening Time
Minimum / Maximum
4 hrs. / —
— / 1 hr.
— / 1 sec.
4 hrs. / —
— / 1 hr.
238/239 Series
Opening Time
Minimum / Maximum
4 hrs. / —
— / 1 hr.
5 sec. / —
4 hrs. / —
— / 1 hr.
— / 1 sec.
5 sec. / —
Ordering Information
233/235/239 Series 233xe/236/238 Series
Dimensions
Approvals:
(233 Series)
MITI approved
(235 Series)
MITI approved from 1A to 5A
(239 Series)
MITI approved from 1A to 5A
Patented
UL Recognized/CSA Certified
Electrical Characteristics
Electrical Characteristics
216/226 Series
% of Ampere
Opening Time
Rating
Minimum / Maximum
Specifications
5.25
(.207")
22.5
(.886")
40
(1.58")
Ampere
Rating
0.100
0.125
0.200
0.250
0.300
0.400
0.500
0.600
0.700
0.750
0.800
1
1.25
1.6
2
2.5
3
3.15
3.5
4
5
6
6.3
233/233xe Series
(Medium-Acting)
Nominal
Catalog Melting I2t
Number (A2 Sec.)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0233 001
2.03
0233 1.25
3.48
0233 0.16
6.31
0233 002
10.2
0233 02.5
17.5
0233 003
27.0
0233 3.15
30.6
0233 03.5
37.3
0233 004
53.0
0233 005
92.4
0233 006
135
0233 06.3
156
235/236 Series
(Fast-Acting)
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
235.100
0.00160
235.125
0.00280
235.200
0.00890
235.250
0.0170
235.300
0.0330
235.400
0.0600
235.500
0.0710
235.600
0.115
235.700
0.160
—
—
235.800
0.260
235 001
0.480
235 1.25
1.12
235 01.6
2.08
235 002
2.72
235 02.5
5.59
235 003
8.62
—
—
—
—
235 004
17.60
235 005
28.15
235 006
48.60
—
—
238/239 Series
(Time Lag)
Nominal
Catalog Melting I2t
Number
(A2 Sec.)
—
—
—
—
239.200
0.170
239.250
0.3508
239.300
0.630
239.400
1.53
239.500
2.04
239.600
2.48
239.700
4.23
239.750
5.57
239.800
7.77
239 001
11.60
239 1.25
20.05
239 01.6
31.25
239 002
51.95
239 02.5
81.85
239 003
133.0
239 3.15
131.5
239 004
278.0
239 005
311.0
—
—
—
—
—
—
Note: For axial leads in 233 Series, add packaging suffix XE. For radial leads in 233 Series, add packaging suffix XW.
For tape and reel option in 233 Series, contact Littlefuse. For axial leads in 235 Series, change catalog number
from 235 to 236.
For axial leads in 239 Series, change catalog number from 239 to 238. All fuses listed are rated @ 250 VAC
Consult Littelfuse web site for more information
www.littelfuse.com
31
Contents
Chart
Previous
Glossary
Electronic Overcurrent Protection
IEC Standard Axial Lead and Cartridge Fuses
5 x 20mm Series
Electronic Overcurrent Protection
UL/CSA Standard Axial Lead and Cartridge Fuses
5 x 20mm Series
Features
5 x 20mm Fast-Acting Fuses
216 and 217 Series, and
Time Lag Fuses 218 Series:
•
Designed to IEC standards for global use
•
Meets the IEC 60127-2, Sheet 1 and 2
specification for fast-acting fuses,
Sheet 3 specifications for time lag fuses
•
Available in cartridge and axial lead form
•
Available in ratings of 0.032 to 10A
Specifications
Features
Interrupting Ratings:
(216 Series) 1500A
(217/218 Series) 35A or 10 x rated
current, whichever is greater
5 x 20mm Medium-Acting Fuses
233 Series, Fast-Acting 235 Series,
and Time Lag Fuses 239 Series:
Approvals:
(216/217/218 Series)
IEC 60127-2/127-2
Semko approved through 6.3A
VDE approved .05 to 6.3A
BSI approved 1A to 6.3A
UL Recognized/CSA Certified
216/226 Series
% of Ampere
Opening Time
Rating
Minimum / Maximum
.032 – .100A
.125 – 6.3A
60 min. / —
— / 30 min.
0.01 sec. / 2 sec.
0.003 sec. / 0.3 sec.
— / 0.02 sec.
60 min. / —
— / 30 min.
0.01 sec. / 3 sec.
0.003 sec. / 0.3 sec.
— / 0.02 sec.
217/227 Series
Opening Time
Minimum / Maximum
218/228 Series
Opening Time
Minimum / Maximum
60 min. / —
— / 30 min.
0.01 sec. / 5 sec.
0.003 sec. / 0.1 sec.
— / 0.02 sec.
60 min. / —
— / 30 min.
0.05 sec. / 2 sec.
0.01 sec. / 0.3 sec.
— / 0.02 sec.
60 min. / —
— / 2 min.
0.2 sec. / 10 sec.
0.04 sec. / 3 sec.
0.01 sec. / 0.3 sec.
60 min. / —
— / 2 min.
0.6 sec. / 10 sec.
0.15 sec. / 3 sec.
0.01 sec. / 0.3 sec.
Designed to UL/CSA/ANCE
248 standard
•
Available in cartridge and axial
lead format
•
Available in ratings of 0.200 to 5A
1 to 3.5A
4 to 6.3A
Dimensions
216/217/218 Series
226/227/228 Series
.635
(.025")
5
(.197")
30
20
(.787")
5.25
(.207")
22.5
(.886")
40
(1.58")
Ampere
Rating
.635
(.025")
217/227 Series
(Fast-Acting)
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
218/228 Series
(Time Lag)
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
0.032
—
—
217.032
0.000048
218.032
0.00305
0.040
—
—
217.040
0.000074
218.040
0.0055
0.050
216.050
0.00019
217.050
0.00020
218.050
0.0071
0.063
216.063
0.00055
217.063
0.00057
218.063
0.012
0.080
216.080
0.00086
217.080
0.00085
218.080
0.0265
0.100
216.100
0.0033
217.100
0.0034
218.100
0.0495
0.125
216.125
0.0056
217.125
0.0049
218.125
0.150
0.160
216.160
0.0018
217.160
0.011
218.160
0.225
0.200
216.200
0.0045
217.200
0.025
218.200
0.350
0.250
216.250
0.0092
217.250
0.043
218.250
0.555
0.315
216.315
0.015
217.315
0.110
218.315
1.14
0.400
216.400
0.028
217.400
0.130
218.400
1.35
0.500
216.500
0.045
217.500
0.225
218.500
2.90
0.630
216.630
0.097
217.630
0.420
218.630
4.80
0.800
216.800
0.18
217.800
0.870
218.800
1.99
1
216 001
0.19
217 001
1.07
218 001
3.33
1.25
216 1.25
0.49
217 1.25
2.29
218 1.25
5.80
1.6
216 01.6
1.04
217 01.6
4.74
218 01.6
10.61
2
216 002
1.92
217 002
5.88
218 002
14.80
2.5
216 02.5
2.77
217 02.5
9.72
218 02.5
23.85
3.15
216 3.15
7.85
217 3.15
18.2
218 3.15
39.20
4
216 004
15.4
217 004
30.0
218 004
70.95
5
216 005
28.2
217 005
43.9
218 005
114.0
6.3
216 06.3
57.9
217 06.3
64.2
218 06.3
204.0
8
216 008
66.1
217 008
203.5
218 008
350.5
10
216 010
158.5
217 010
223.5
218 010
583.0
15
—
—
—
—
218 015
1441.0
Note: For axial leads in 216, 217, and 218 Series, change catalog numbers from 216 to 226, 217 to 227, and 218
to 228. All fuses listed are rated @ 250 VAC.
Consult Littelfuse web site for more information
www.littelfuse.com
5
(.197")
20
(.787")
233/233xe Series
% of Ampere
Opening Time
Rating
Minimum / Maximum
110
4 hrs. / —
135
— / 1 hr.
200
— / 3 sec.
110
1 hr. / —
— / 1 hr.
135
200
— / 3 sec.
235/236 Series
Opening Time
Minimum / Maximum
4 hrs. / —
— / 1 hr.
— / 1 sec.
4 hrs. / —
— / 1 hr.
238/239 Series
Opening Time
Minimum / Maximum
4 hrs. / —
— / 1 hr.
5 sec. / —
4 hrs. / —
— / 1 hr.
— / 1 sec.
5 sec. / —
Ordering Information
Ordering Information
216/226 Series
(Fast-Acting)
Nominal
Catalog Melting I2t
Number (A2 Sec.)
Approvals:
(233 Series)
MITI approved
(235 Series)
MITI approved from 1A to 5A
(239 Series)
MITI approved from 1A to 5A
Patented
UL Recognized/CSA Certified
Electrical Characteristics
233/235/239 Series 233xe/236/238 Series
Dimensions
Specifications
•
Electrical Characteristics
150
210
275
400
1000
150
210
275
400
1000
Next
5.25
(.207")
22.5
(.886")
40
(1.58")
Ampere
Rating
0.100
0.125
0.200
0.250
0.300
0.400
0.500
0.600
0.700
0.750
0.800
1
1.25
1.6
2
2.5
3
3.15
3.5
4
5
6
6.3
233/233xe Series
(Medium-Acting)
Nominal
Catalog Melting I2t
Number (A2 Sec.)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0233 001
2.03
0233 1.25
3.48
0233 0.16
6.31
0233 002
10.2
0233 02.5
17.5
0233 003
27.0
0233 3.15
30.6
0233 03.5
37.3
0233 004
53.0
0233 005
92.4
0233 006
135
0233 06.3
156
235/236 Series
(Fast-Acting)
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
235.100
0.00160
235.125
0.00280
235.200
0.00890
235.250
0.0170
235.300
0.0330
235.400
0.0600
235.500
0.0710
235.600
0.115
235.700
0.160
—
—
235.800
0.260
235 001
0.480
235 1.25
1.12
235 01.6
2.08
235 002
2.72
235 02.5
5.59
235 003
8.62
—
—
—
—
235 004
17.60
235 005
28.15
235 006
48.60
—
—
238/239 Series
(Time Lag)
Nominal
Catalog Melting I2t
Number
(A2 Sec.)
—
—
—
—
239.200
0.170
239.250
0.3508
239.300
0.630
239.400
1.53
239.500
2.04
239.600
2.48
239.700
4.23
239.750
5.57
239.800
7.77
239 001
11.60
239 1.25
20.05
239 01.6
31.25
239 002
51.95
239 02.5
81.85
239 003
133.0
239 3.15
131.5
239 004
278.0
239 005
311.0
—
—
—
—
—
—
Note: For axial leads in 233 Series, add packaging suffix XE. For radial leads in 233 Series, add packaging suffix XW.
For tape and reel option in 233 Series, contact Littlefuse. For axial leads in 235 Series, change catalog number
from 235 to 236.
For axial leads in 239 Series, change catalog number from 239 to 238. All fuses listed are rated @ 250 VAC
Consult Littelfuse web site for more information
www.littelfuse.com
31
Contents
Chart
Previous
Glossary
Next
Electronic Overcurrent Protection
Electronic Overcurrent Protection
Glass Body Axial Lead and Cartridge Fuses
3AG Fast-Acting Series
UL/CSA Standard Axial Lead and Cartridge Fuses
3AB Series
Features
Specifications
3AB Fast-Acting Type 314 Series,
Very Fast-Acting Type 322 Series,
and Slo-Blo Type 326 Series:
312/318 Series Fast-Acting Fuses, 313/315
•
For protection of silicon controlled
rectifiers and similar solid-state devices
(322 Series)
•
Voltage rating for 314 Series is UL listed
through 15A @ 250 VAC/125 DC
•
Ideal application where high current
loads are expected
•
Ceramic body construction permits higher
interrupting ratings and voltage ratings
Series Slo-Blo Fuses. 3AG fuses satisfy a
broad range of application requirements
and are a standard for cost-effective and
reliable circuit protection.
Electrical Characteristics
Dimensions
315/318 Series
.032"
.275"
1.25"
1.275"
1.50"
TYP.
Axial Lead Material: Solder coated copper.
Specifications
Approvals:
(312/318 Series)
1/100 to 10A: Listed to UL 248-14
12 to 30A: Listed to UL 275
CSA approved
(313/315 Series)
0 to 8A: UL Listed
MITA approved from 1A to 5A (313)
CSA approved
32
Ampere
Rating
110%
135%
200%
1/32 - 35
1/32 - 35
1/32 - 10
12 - 30
35
4 hrs. / —
— / 1 hr.
5 sec. / —
5 sec. / —
5 sec. / —
312/318 Fast-Acting
Opening Time
Min / Max
4 hrs. / —
— / 1 hr.
— / 5 sec.
— / 10 sec.
— / 20 sec.
Electrical Characteristics
% of
314 Series
Ampere .125 to 12A
15 to 30A
Rating Mini. / Maxi. Mini. / Maxi.
Ordering Information
312/313 Series
.25"
% of Ampere
Rating
313/315 Slo-Blo
Opening Time
Min / Max
Ampere
Rating
Catalog
Number
313/315 Slo-Blo
Nominal
Melting I2t
(A2 Sec.)
Voltage
Rating
312/318 Fast-Acting
Nominal
Catalog
Melting I2t
Voltage
Number
(A2 Sec.)
Rating
1/100
313.010
0.000121
250
—
1/32
313.031
0.00303
250
312.031
1/25
313.040
0.00630
250
—
1/16
313.062
0.0210
250
312.062
1/10
313.100
0.0850
250
313.100
1/8
313.125
0.152
250
312.125
3/20
313.150
0.270
250
312.150
7/40
313.175
0.177
250
312.175
3/16
313.187
0.230
250
312.187
1/5
313.200
0.270
250
312.200
1/4
313.250
0.385
250
312.250
3/10
313.300
0.730
250
312.300
3/8
313.375
1.23
250
312.375
2/5
313.400
1.35
250
—
1/2
313.500
2.55
250
312.500
3/5
313.600
4.00
250
312.600
7/10
313.700
5.90
250
—
3/4
313.750
7.16
250
312.750
4/5
313.800
8.00
250
—
1
313001
14.0
250
312001
1-1/5
31301.2
21.5
250
—
1-1/4
3131.25
24.0
250
3121.25
1-1/2
31301.5
38.0
250
31201.5
1-3/5
31301.6
49.6
250
31201.6
1-3/4
—
—
250
3121.75
1-4/5
31301.8
58.0
250
31201.8
2
313002
77.0
250
312002
2-1/4
3132.25
121.0
250
3122.25
2-1/2
31302.5
130.0
250
31202.5
2-4/5
31302.8
170.0
250
—
3
313003
200.0
250
312003
3-1/5
31303.2
209.0
250
—
4
313004
76.1
250
312004
5
313005
140.0
250
312005
6
—
—
250
312006
6-1/4
3136.25
242.0
250
—
6-3/10
3136.30
242.0
250
—
7
313007
347.0
250
312007
8
313008
445.0
250
312008
10
313010
760.0
32
312010
12
313012
1200.0
32
312012
15
313015
1870.0
32
312015
20
313020
9560.0
32
312020
25
313025
16500.0
32
312025
30
313030
26900.0
32
312030
35
—
—
—
312035
Note: For axial leads in the 313 Series, change catalog number from 313 to 315.
For axial leads in the 312 Series, change catalog number from 312 to 318.
Consult Littelfuse web site for more information
—
0.00003
—
0.000249
0.00102
0.00289
0.0055
0.0096
0.0128
0.0165
0.0355
0.0689
0.185
—
0.483
0.880
—
1.84
—
0.760
—
1.45
2.35
2.80
3.60
3.85
5.20
7.20
9.54
—
14
—
28.5
50.0
81.1
—
—
118.0
166.0
298.0
—
—
—
—
—
—
www.littelfuse.com
Approvals:
CSA Certified (LR29862)
(314 Series)
UL Recognized from 20A to 30A,
20A @ 250 VAC/125 VDC,
25A–30A @125 VAC/VDC,
MITI approved from 10A to 15A (E10480)
(322 Series)
UL recognized from 1A to 10A @
250 VAC/65 VDC, 12A to 30A @
65 VAC/VDC
(326 Series)
UL listed from 1/4A to 10A
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
32
32
32
32
32
32
Dimensions
324/325 Series
.032"(1/ 8 - 15A)
.040"(20 - 30A)
.275"
1.25"
326 Series
.01 to 3.2A
4 to 30A
Mini. / Maxi. Mini. / Maxi.
100
4 hrs. / —
4 hrs. / —
4 hrs. / —
4 hrs. / —
4 hrs. / —
4 hrs. / —
110
4 hrs. / —
4 hrs. / —
—
—
4 hrs. / —
4 hrs. / —
135
— / 1 hr.
— / 1 hr.
—
—
— / 1 hr.
— / 1 hr.
200
— / 15 sec.
— / 30 sec.
—
—
250
—
—
— / .2 sec.
— / 1 sec.
5 sec. / 30 sec. 5 sec. / 60 sec.
—
—
Ordering Information
314/322/326 Series
.25"
322 Series
1 to 10A
12 to 30A
Mini. / Maxi. Mini. / Maxi.
1.275"
Axial Lead Material: Solder coated copper.
1.50"
TYP.
Ampere
Rating
314/324 Series
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
322 Series
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
326/325 Series
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
1/100
—
—
—
—
326.010
1/32
—
—
—
—
326.031
1/16
—
—
—
—
326.062
1/10
—
—
—
—
326.100
1/8
314.125
0.00149
—
—
326.125
15/100
—
—
—
—
326.150
0.175
—
—
—
—
326.175
3/16
—
—
—
—
326.187
2/10
—
—
—
—
326.200
1/4
314.250
0.0140
—
—
326.250
3/10
—
—
—
—
326.300
3/8
314.375
0.050
—
—
326.375
4/10
—
—
—
—
326.400
1/2
314.500
0.115
—
—
326.500
6/10
—
—
—
—
326.600
7/10
—
—
—
—
326.700
3/4
314.750
0.466
—
—
326.750
8/10
—
—
—
—
326.800
1
314 001
0.690
322 001
—
326 001
1-2/10
—
—
—
—
326 01.2
1-1/4
—
—
322 1.25
—
326 1.25
1-1/2
—
—
—
—
326 01.5
1-6/10
—
—
—
—
326 01.6
2
314 002
11.0
322 002
—
326 002
2-1/2
—
—
—
—
326 02.5
2-8/10
—
—
—
—
326 02.8
3
314 003
14.6
322 003
—
326 003
3-2/10
—
—
—
—
326 03.2
4
314 004
10.4
322 004
—
326 004
5
314 005
26.0
322 005
—
326 005
6
314 006
45.0
322 006
—
—
6-1/4
—
—
—
—
326 6.25
7
314 007
71.0
322 007
—
326 007
8
314 008
105.0
322 008
—
326 008
9
—
—
322 009
—
—
10
314 010
206.0
322 010
—
326 010
12
314 012
570.0
322 012
—
326 012
15
314 015
292.0
322 015
—
326 015
20
314 020
631.0
322 020
—
326 020
25
314 025
1450.0
322 025
—
326 025
30
314 030
2490.0
322 030
—
326 030
Note: For axial leads in 314 and 326 Series, change catalog numbers from 314 to 324 and 326 to 325.
All fuses are rated @ 250 VAC
Consult Littelfuse web site for more information
www.littelfuse.com
0.00148
0.0110
0.0276
0.0870
0.100
0.143
0.220
0.230
0.213
0.432
0.690
1.20
1.33
2.50
3.90
6.42
7.00
8.20
16.3
22.0
24.0
40.1
45.0
80.0
136.0
170.0
200.0
214.0
9.71
25.0
—
60.4
47.3
67.1
—
137.0
129.0
245.0
575.0
1030.0
1690.0
33
Contents
Chart
Previous
Glossary
Electronic Overcurrent Protection
Glass Body Axial Lead and Cartridge Fuses
3AG Fast-Acting Series
Electronic Overcurrent Protection
UL/CSA Standard Axial Lead and Cartridge Fuses
3AB Series
Features
Specifications
3AB Fast-Acting Type 314 Series,
Very Fast-Acting Type 322 Series,
and Slo-Blo Type 326 Series:
312/318 Series Fast-Acting Fuses, 313/315
•
For protection of silicon controlled
rectifiers and similar solid-state devices
(322 Series)
•
Voltage rating for 314 Series is UL listed
through 15A @ 250 VAC/125 DC
•
Ideal application where high current
loads are expected
•
Ceramic body construction permits higher
interrupting ratings and voltage ratings
Series Slo-Blo Fuses. 3AG fuses satisfy a
broad range of application requirements
and are a standard for cost-effective and
reliable circuit protection.
Electrical Characteristics
Dimensions
315/318 Series
.032"
.275"
1.25"
1.275"
1.50"
TYP.
Axial Lead Material: Solder coated copper.
Specifications
Approvals:
(312/318 Series)
1/100 to 10A: Listed to UL 248-14
12 to 30A: Listed to UL 275
CSA approved
(313/315 Series)
0 to 8A: UL Listed
MITA approved from 1A to 5A (313)
CSA approved
32
Ampere
Rating
110%
135%
200%
1/32 - 35
1/32 - 35
1/32 - 10
12 - 30
35
4 hrs. / —
— / 1 hr.
5 sec. / —
5 sec. / —
5 sec. / —
312/318 Fast-Acting
Opening Time
Min / Max
4 hrs. / —
— / 1 hr.
— / 5 sec.
— / 10 sec.
— / 20 sec.
Ampere
Rating
Catalog
Number
Voltage
Rating
% of
314 Series
Ampere .125 to 12A
15 to 30A
Rating Mini. / Maxi. Mini. / Maxi.
312/318 Fast-Acting
Nominal
Catalog
Melting I2t
Voltage
Number
(A2 Sec.)
Rating
1/100
313.010
0.000121
250
—
1/32
313.031
0.00303
250
312.031
1/25
313.040
0.00630
250
—
1/16
313.062
0.0210
250
312.062
1/10
313.100
0.0850
250
313.100
1/8
313.125
0.152
250
312.125
3/20
313.150
0.270
250
312.150
7/40
313.175
0.177
250
312.175
3/16
313.187
0.230
250
312.187
1/5
313.200
0.270
250
312.200
1/4
313.250
0.385
250
312.250
3/10
313.300
0.730
250
312.300
3/8
313.375
1.23
250
312.375
2/5
313.400
1.35
250
—
1/2
313.500
2.55
250
312.500
3/5
313.600
4.00
250
312.600
7/10
313.700
5.90
250
—
3/4
313.750
7.16
250
312.750
4/5
313.800
8.00
250
—
1
313001
14.0
250
312001
1-1/5
31301.2
21.5
250
—
1-1/4
3131.25
24.0
250
3121.25
1-1/2
31301.5
38.0
250
31201.5
1-3/5
31301.6
49.6
250
31201.6
1-3/4
—
—
250
3121.75
1-4/5
31301.8
58.0
250
31201.8
2
313002
77.0
250
312002
2-1/4
3132.25
121.0
250
3122.25
2-1/2
31302.5
130.0
250
31202.5
2-4/5
31302.8
170.0
250
—
3
313003
200.0
250
312003
3-1/5
31303.2
209.0
250
—
4
313004
76.1
250
312004
5
313005
140.0
250
312005
6
—
—
250
312006
6-1/4
3136.25
242.0
250
—
6-3/10
3136.30
242.0
250
—
7
313007
347.0
250
312007
8
313008
445.0
250
312008
10
313010
760.0
32
312010
12
313012
1200.0
32
312012
15
313015
1870.0
32
312015
20
313020
9560.0
32
312020
25
313025
16500.0
32
312025
30
313030
26900.0
32
312030
35
—
—
—
312035
Note: For axial leads in the 313 Series, change catalog number from 313 to 315.
For axial leads in the 312 Series, change catalog number from 312 to 318.
Consult Littelfuse web site for more information
—
0.00003
—
0.000249
0.00102
0.00289
0.0055
0.0096
0.0128
0.0165
0.0355
0.0689
0.185
—
0.483
0.880
—
1.84
—
0.760
—
1.45
2.35
2.80
3.60
3.85
5.20
7.20
9.54
—
14
—
28.5
50.0
81.1
—
—
118.0
166.0
298.0
—
—
—
—
—
—
www.littelfuse.com
Approvals:
CSA Certified (LR29862)
(314 Series)
UL Recognized from 20A to 30A,
20A @ 250 VAC/125 VDC,
25A–30A @125 VAC/VDC,
MITI approved from 10A to 15A (E10480)
(322 Series)
UL recognized from 1A to 10A @
250 VAC/65 VDC, 12A to 30A @
65 VAC/VDC
(326 Series)
UL listed from 1/4A to 10A
Electrical Characteristics
Ordering Information
312/313 Series
.25"
% of Ampere
Rating
313/315 Slo-Blo
Opening Time
Min / Max
313/315 Slo-Blo
Nominal
Melting I2t
(A2 Sec.)
Next
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
32
32
32
32
32
32
Dimensions
324/325 Series
.032"(1/ 8 - 15A)
.040"(20 - 30A)
.275"
1.25"
326 Series
.01 to 3.2A
4 to 30A
Mini. / Maxi. Mini. / Maxi.
100
4 hrs. / —
4 hrs. / —
4 hrs. / —
4 hrs. / —
4 hrs. / —
4 hrs. / —
110
4 hrs. / —
4 hrs. / —
—
—
4 hrs. / —
4 hrs. / —
135
— / 1 hr.
— / 1 hr.
—
—
— / 1 hr.
— / 1 hr.
200
— / 15 sec.
— / 30 sec.
—
—
250
—
—
— / .2 sec.
— / 1 sec.
5 sec. / 30 sec. 5 sec. / 60 sec.
—
—
Ordering Information
314/322/326 Series
.25"
322 Series
1 to 10A
12 to 30A
Mini. / Maxi. Mini. / Maxi.
1.275"
Axial Lead Material: Solder coated copper.
1.50"
TYP.
Ampere
Rating
314/324 Series
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
322 Series
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
326/325 Series
Nominal
Catalog
Melting I2t
Number
(A2 Sec.)
1/100
—
—
—
—
326.010
1/32
—
—
—
—
326.031
1/16
—
—
—
—
326.062
1/10
—
—
—
—
326.100
1/8
314.125
0.00149
—
—
326.125
15/100
—
—
—
—
326.150
0.175
—
—
—
—
326.175
3/16
—
—
—
—
326.187
2/10
—
—
—
—
326.200
1/4
314.250
0.0140
—
—
326.250
3/10
—
—
—
—
326.300
3/8
314.375
0.050
—
—
326.375
4/10
—
—
—
—
326.400
1/2
314.500
0.115
—
—
326.500
6/10
—
—
—
—
326.600
7/10
—
—
—
—
326.700
3/4
314.750
0.466
—
—
326.750
8/10
—
—
—
—
326.800
1
314 001
0.690
322 001
—
326 001
1-2/10
—
—
—
—
326 01.2
1-1/4
—
—
322 1.25
—
326 1.25
1-1/2
—
—
—
—
326 01.5
1-6/10
—
—
—
—
326 01.6
2
314 002
11.0
322 002
—
326 002
2-1/2
—
—
—
—
326 02.5
2-8/10
—
—
—
—
326 02.8
3
314 003
14.6
322 003
—
326 003
3-2/10
—
—
—
—
326 03.2
4
314 004
10.4
322 004
—
326 004
5
314 005
26.0
322 005
—
326 005
6
314 006
45.0
322 006
—
—
6-1/4
—
—
—
—
326 6.25
7
314 007
71.0
322 007
—
326 007
8
314 008
105.0
322 008
—
326 008
9
—
—
322 009
—
—
10
314 010
206.0
322 010
—
326 010
12
314 012
570.0
322 012
—
326 012
15
314 015
292.0
322 015
—
326 015
20
314 020
631.0
322 020
—
326 020
25
314 025
1450.0
322 025
—
326 025
30
314 030
2490.0
322 030
—
326 030
Note: For axial leads in 314 and 326 Series, change catalog numbers from 314 to 324 and 326 to 325.
All fuses are rated @ 250 VAC
Consult Littelfuse web site for more information
www.littelfuse.com
0.00148
0.0110
0.0276
0.0870
0.100
0.143
0.220
0.230
0.213
0.432
0.690
1.20
1.33
2.50
3.90
6.42
7.00
8.20
16.3
22.0
24.0
40.1
45.0
80.0
136.0
170.0
200.0
214.0
9.71
25.0
—
60.4
47.3
67.1
—
137.0
129.0
245.0
575.0
1030.0
1690.0
33
Contents
Glossary
Chart
Previous
Electronic Overcurrent Protection
Next
Electronic Overcurrent Protection
Surface Mount Resettable PTCs
1812L Series
Surface Mount Resettable PTCs
3425L Series
Features
Specifications
In normal operation, the 3425L Series
Specifications
•
Approvals:
UL Recognized (UL E183209)
CSA Certified (LR108832)
TUV B 98 12 30766006
PTC has many conductive paths and a
Approvals:
UL Recognized (UL E183209)
CSA Certified (LR108832)
Materials:
Terminations:
the conductive paths resulting in an
•
•
Utilize a unique polymer-based, positive
temperature coefficient (PTC) material
to protect electrical circuits against
overcurrent conditions
Provide surface mount overcurrent
protection in a compact package
Ideal for computer applications
including: hard disc drives, USB ports,
PC cards and printers
very low resistance. In an overcurrent
condition, the temperature of the polymer
material rises. This dramatically reduces
Tin-lead plated copper
Materials:
Terminations:
Tin-plated brass
to MIL-T-10727B
immediate rise in resistance. In this
condition, the device provides circuit
protection by significantly limiting the
Dimensions
flow of current. However, once the cause
B
Dimensions
of the initial overcurrent condition is
1.27 mm (.050)
4.55 mm (.179)
D
A
eliminated, the 3425L Series PTC cools
MARKING
E
F
down and resets to a low resistance
Top
View
3.24 mm
(.127)
26
Side
View
value permitting the normal current
.120
.020-.035
flow to resume.
.025
.025
C
0.50 mm (.020)
Features
Bottom
View
26
Pad
Layout
Ordering Information
Ihold —
Itrip —
Vmax —
Imax —
Pd max —
RIL —
RAT —
Ihold
(A)
0.50
0.75
1.10
1.25
1.50
2.00
2.60
Itrip
(A)
1.00
1.50
2.20
2.50
3.00
4.00
5.20
Vmax
(Vdc)
15.0
13.2
6.0
6.0
6.0
6.0
6.0
Imax
(A)
40
40
40
40
40
40
40
Pd max
(W)
0.8
0.8
0.8
0.8
0.8
0.8
0.8
Current
(A)
8.0
8.0
8.0
8.0
8.0
8.0
8.0
Time
(Sec)
0.15
0.20
0.30
0.25
0.30
2.50
2.50
The 3425L Series is surface mountable
•
Utilizes a unique polymer-based,
positive temperature coefficient (PTC)
material to protect electrical circuits
against overcurrent conditions
Series
3425L
Maximum Time
to Trip
Part
Number
1812L050
1812L075
1812L110
1812L125
1812L150
1812L200
1812L260
•
Resistance
RIL
(Ω)
0.100
0.075
0.040
0.045
0.040
0.180
0.010
RAT
(Ω)
1.000
0.420
0.226
0.184
0.137
0.070
0.050
Hold current: maximum current device will sustain for four hours without tripping in 20°C still air
Trip current: minimum current device will trip in 20°C still air
Maximum voltage device can withstand without damage at rated current (Imax )
Maximum fault current device can withstand without damage at rated voltage (Vmax )
Power dissipated from device when in the tripped state at 20°C still air
Minimum resistance of device in initial (unsoldered) state
Maximum resistance of device at 20°C measured one hour after tripping or reflow soldering of 260°C
CAUTION: Operation beyond the specified ratings may result in damage and possible arcing and flame.
A
.264 max.
B
.374 max.
C
.145
D
.180
E
.090
F
.420
Dimensions are in inches
Dimension
A
0.50 (.020)
0.50 (.020)
0.50 (.020)
0.40 (.016)
0.40 (.016)
0.40 (.016)
0.40 (.016)
Ordering Information
Maximum Time
to Trip
Part
Number
3425L150
3425L200
3425L250
3425L300
Ihold —
Itrip —
Vmax —
Imax —
Pd max —
RIL —
RAT —
Ihold
(A)
1.50
2.00
2.50
3.00
Itrip
(A)
3.0
4.0
5.0
6.0
Vmax
(Vdc)
15
15
15
15
Imax
(A)
40
40
40
40
Pd max
(W)
1.9
1.9
1.9
1.9
Current
(A)
8.0
8.0
8.0
8.0
Time
(Sec)
5.0
12.0
25.0
32.0
Resistance
RIL
(Ω)
0.060
0.050
0.035
0.020
RAT
(Ω)
0.25
0.15
0.10
0.06
Hold current: maximum current device will sustain for four hours without tripping in 20°C still air
Trip current: minimum current device will trip in 20°C still air
Maximum voltage device can withstand without damage at rated current (Imax )
Maximum fault current device can withstand without damage at rated voltage (Vmax )
Power dissipated from device when in the tripped state at 20°C still air
Minimum resistance of device in initial (unsoldered) state
Maximum resistance of device at 20°C measured one hour after tripping or reflow soldering of 260°C
CAUTION: Operation beyond the specified ratings may result in damage and possible arcing and flame.
34
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
35
Contents
Glossary
Electronic Overcurrent Protection
Surface Mount Resettable PTCs
1812L Series
Chart
Previous
Electronic Overcurrent Protection
Surface Mount Resettable PTCs
3425L Series
Features
Specifications
In normal operation, the 3425L Series
Specifications
•
Approvals:
UL Recognized (UL E183209)
CSA Certified (LR108832)
TUV B 98 12 30766006
PTC has many conductive paths and a
Approvals:
UL Recognized (UL E183209)
CSA Certified (LR108832)
Materials:
Terminations:
the conductive paths resulting in an
•
•
Next
Utilize a unique polymer-based, positive
temperature coefficient (PTC) material
to protect electrical circuits against
overcurrent conditions
Provide surface mount overcurrent
protection in a compact package
Ideal for computer applications
including: hard disc drives, USB ports,
PC cards and printers
very low resistance. In an overcurrent
condition, the temperature of the polymer
material rises. This dramatically reduces
Tin-lead plated copper
Materials:
Terminations:
Tin-plated brass
to MIL-T-10727B
immediate rise in resistance. In this
condition, the device provides circuit
protection by significantly limiting the
Dimensions
flow of current. However, once the cause
B
Dimensions
of the initial overcurrent condition is
1.27 mm (.050)
4.55 mm (.179)
D
A
eliminated, the 3425L Series PTC cools
MARKING
E
F
down and resets to a low resistance
Top
View
3.24 mm
(.127)
26
Side
View
value permitting the normal current
.120
.020-.035
flow to resume.
.025
.025
C
0.50 mm (.020)
Features
Bottom
View
26
Pad
Layout
Ordering Information
Ihold —
Itrip —
Vmax —
Imax —
Pd max —
RIL —
RAT —
Ihold
(A)
0.50
0.75
1.10
1.25
1.50
2.00
2.60
Itrip
(A)
1.00
1.50
2.20
2.50
3.00
4.00
5.20
Vmax
(Vdc)
15.0
13.2
6.0
6.0
6.0
6.0
6.0
Imax
(A)
40
40
40
40
40
40
40
Pd max
(W)
0.8
0.8
0.8
0.8
0.8
0.8
0.8
Current
(A)
8.0
8.0
8.0
8.0
8.0
8.0
8.0
Time
(Sec)
0.15
0.20
0.30
0.25
0.30
2.50
2.50
The 3425L Series is surface mountable
•
Utilizes a unique polymer-based,
positive temperature coefficient (PTC)
material to protect electrical circuits
against overcurrent conditions
Series
3425L
Maximum Time
to Trip
Part
Number
1812L050
1812L075
1812L110
1812L125
1812L150
1812L200
1812L260
•
Resistance
RIL
(Ω)
0.100
0.075
0.040
0.045
0.040
0.180
0.010
RAT
(Ω)
1.000
0.420
0.226
0.184
0.137
0.070
0.050
Hold current: maximum current device will sustain for four hours without tripping in 20°C still air
Trip current: minimum current device will trip in 20°C still air
Maximum voltage device can withstand without damage at rated current (Imax )
Maximum fault current device can withstand without damage at rated voltage (Vmax )
Power dissipated from device when in the tripped state at 20°C still air
Minimum resistance of device in initial (unsoldered) state
Maximum resistance of device at 20°C measured one hour after tripping or reflow soldering of 260°C
CAUTION: Operation beyond the specified ratings may result in damage and possible arcing and flame.
A
.264 max.
B
.374 max.
C
.145
D
.180
E
.090
F
.420
Dimensions are in inches
Dimension
A
0.50 (.020)
0.50 (.020)
0.50 (.020)
0.40 (.016)
0.40 (.016)
0.40 (.016)
0.40 (.016)
Ordering Information
Maximum Time
to Trip
Part
Number
3425L150
3425L200
3425L250
3425L300
Ihold —
Itrip —
Vmax —
Imax —
Pd max —
RIL —
RAT —
Ihold
(A)
1.50
2.00
2.50
3.00
Itrip
(A)
3.0
4.0
5.0
6.0
Vmax
(Vdc)
15
15
15
15
Imax
(A)
40
40
40
40
Pd max
(W)
1.9
1.9
1.9
1.9
Current
(A)
8.0
8.0
8.0
8.0
Time
(Sec)
5.0
12.0
25.0
32.0
Resistance
RIL
(Ω)
0.060
0.050
0.035
0.020
RAT
(Ω)
0.25
0.15
0.10
0.06
Hold current: maximum current device will sustain for four hours without tripping in 20°C still air
Trip current: minimum current device will trip in 20°C still air
Maximum voltage device can withstand without damage at rated current (Imax )
Maximum fault current device can withstand without damage at rated voltage (Vmax )
Power dissipated from device when in the tripped state at 20°C still air
Minimum resistance of device in initial (unsoldered) state
Maximum resistance of device at 20°C measured one hour after tripping or reflow soldering of 260°C
CAUTION: Operation beyond the specified ratings may result in damage and possible arcing and flame.
34
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
35
Glossary
Chart
Previous
Electronic Overcurrent Protection
In normal operation, the 60R Series
PTC has many conductive paths and a
very low resistance. In an overcurrent
condition, the temperature of the polymer
material rises. This dramatically reduces
the conductive paths resulting in an
immediate rise in resistance. In this
condition, the device provides circuit
protection by significantly limiting the
flow of current. However, once the cause
of the initial overcurrent condition is
Specifications
Approvals:
UL Recognized (UL E183209)
CSA Certified (LR108832)
Dimensions
E
A
eliminated, the 60R Series PTC cools
down and resets to a low resistance
value permitting the normal current
flow to resume.
MARKING
B
Features
•
•
P R O D U C T S
Radial Leaded Resettable PTCs
60R Series
D
Utilizes a unique polymer-based,
positive temperature coefficient (PTC)
material to protect electrical circuits
against overcurrent conditions
C
The 60R Series is a 60V radial leaded
device with a 40A short circuit rating
Ordering Information
Maximum Time
to Trip
Part
Number
60R010
60R017
60R020
60R025
60R030
60R040
60R050
60R065
60R075
60R090
60R110
60R135
60R160
60R185
60R250
60R300
60R375
Ihold —
Itrip —
Vmax —
Imax —
Pd max —
RIL —
RAT —
Ihold
(A)
0.10
0.17
0.20
0.25
0.30
0.40
0.50
0.65
0.75
0.90
1.10
1.35
1.60
1.85
2.50
3.00
3.75
Itrip
(A)
0.20
0.34
0.40
0.50
0.60
0.80
1.00
1.30
1.50
1.80
2.20
2.70
3.20
3.70
5.00
6.00
7.50
Vmax
(Vdc)
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
Imax
(A)
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
Pd max
(W)
0.38
0.48
0.41
0.45
0.49
0.56
0.77
0.88
0.92
0.99
1.50
1.70
1.90
2.10
2.50
2.80
3.20
Current
(A)
0.50
0.85
1.00
1.25
1.50
2.00
2.50
3.25
3.75
4.50
5.50
6.75
8.00
9.25
12.50
15.00
18.75
Time
(Sec)
4.0
3.0
2.2
2.5
3.0
3.8
4.0
5.3
6.3
7.2
8.2
9.6
11.4
12.6
15.6
19.8
24.0
Resistance
RIL
(Ω)
2.50
3.30
1.83
1.25
0.88
0.55
0.50
0.31
0.25
0.20
0.15
0.12
0.09
0.08
0.05
0.04
0.03
Hold current: maximum current device will sustain for four hours without tripping in 20°C still air
Trip current: minimum current device will trip in 20°C still air
Maximum voltage device can withstand without damage at rated current (Imax )
Maximum fault current device can withstand without damage at rated voltage (Vmax )
Power dissipated from device when in the tripped state at 20°C still air
Minimum resistance of device in initial (unsoldered) state
Maximum resistance of device at 20°C measured one hour after tripping or reflow soldering of 260°C
CAUTION: Operation beyond the specified ratings may result in damage and possible arcing and flame.
36
Consult Littelfuse web site for more information
www.littelfuse.com
RAT
(Ω)
7.50
8.00
4.40
3.00
2.10
1.29
1.17
0.72
0.60
0.47
0.38
0.30
0.22
0.19
0.13
0.10
0.08
P R O T E C T I O N
Contents
Contents
Glossary
Electronic Overcurrent Protection
In normal operation, the 60R Series
PTC has many conductive paths and a
very low resistance. In an overcurrent
condition, the temperature of the polymer
material rises. This dramatically reduces
the conductive paths resulting in an
immediate rise in resistance. In this
condition, the device provides circuit
protection by significantly limiting the
flow of current. However, once the cause
of the initial overcurrent condition is
Specifications
Approvals:
UL Recognized (UL E183209)
CSA Certified (LR108832)
E
A
MARKING
B
Features
•
D
Utilizes a unique polymer-based,
positive temperature coefficient (PTC)
material to protect electrical circuits
against overcurrent conditions
C
The 60R Series is a 60V radial leaded
device with a 40A short circuit rating
Ordering Information
Maximum Time
to Trip
Part
Number
60R010
60R017
60R020
60R025
60R030
60R040
60R050
60R065
60R075
60R090
60R110
60R135
60R160
60R185
60R250
60R300
60R375
Ihold —
Itrip —
Vmax —
Imax —
Pd max —
RIL —
RAT —
Ihold
(A)
0.10
0.17
0.20
0.25
0.30
0.40
0.50
0.65
0.75
0.90
1.10
1.35
1.60
1.85
2.50
3.00
3.75
Itrip
(A)
0.20
0.34
0.40
0.50
0.60
0.80
1.00
1.30
1.50
1.80
2.20
2.70
3.20
3.70
5.00
6.00
7.50
Vmax
(Vdc)
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
Imax
(A)
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
40
Pd max
(W)
0.38
0.48
0.41
0.45
0.49
0.56
0.77
0.88
0.92
0.99
1.50
1.70
1.90
2.10
2.50
2.80
3.20
Current
(A)
0.50
0.85
1.00
1.25
1.50
2.00
2.50
3.25
3.75
4.50
5.50
6.75
8.00
9.25
12.50
15.00
18.75
Time
(Sec)
4.0
3.0
2.2
2.5
3.0
3.8
4.0
5.3
6.3
7.2
8.2
9.6
11.4
12.6
15.6
19.8
24.0
Resistance
RIL
(Ω)
2.50
3.30
1.83
1.25
0.88
0.55
0.50
0.31
0.25
0.20
0.15
0.12
0.09
0.08
0.05
0.04
0.03
Hold current: maximum current device will sustain for four hours without tripping in 20°C still air
Trip current: minimum current device will trip in 20°C still air
Maximum voltage device can withstand without damage at rated current (Imax )
Maximum fault current device can withstand without damage at rated voltage (Vmax )
Power dissipated from device when in the tripped state at 20°C still air
Minimum resistance of device in initial (unsoldered) state
Maximum resistance of device at 20°C measured one hour after tripping or reflow soldering of 260°C
CAUTION: Operation beyond the specified ratings may result in damage and possible arcing and flame.
36
Consult Littelfuse web site for more information
www.littelfuse.com
RAT
(Ω)
7.50
8.00
4.40
3.00
2.10
1.29
1.17
0.72
0.60
0.47
0.38
0.30
0.22
0.19
0.13
0.10
0.08
P R O T E C T I O N
Dimensions
eliminated, the 60R Series PTC cools
down and resets to a low resistance
value permitting the normal current
flow to resume.
•
P R O D U C T S
Radial Leaded Resettable PTCs
60R Series
Chart
Next
Contents
Chart
Glossary
Previous
Overvoltage / Suppression Protection
Surface Mount ESD Suppressors
PulseGuard Series
Next
Overvoltage / Suppression Protection
Multilayer Surface Mount Transient Voltage Surge Suppressors
ML, MLE, MLN Series
®
PulseGuard ESD suppressors provide
Electrical Characteristics
The multilayer varistor family of
Features
protection for electronic devices against
•
<0.055pF @ 1 MHz
Transient Voltage Surge Suppression
•
Multilayer ceramic
construction technology
•
-55°C to 125°C operating
temperature range
•
Wide operating voltage range
VM(DC) = 3.5V to 120
•
Standard low capacitance
types available
•
Rated for energy (10 x 100)
•
Rated for surge current (8 x 20)
•
Inherent bidirectional clamping
•
No plastic or epoxy packaging assures
better than UL 94V-0 flammability rating
Capacitance
the threat of electrostatic discharge
•
Leakage Current
<1.0µA @ 5 VDC
devices is based on the Littelfuse
(ESD). Employing a voltage-variable
•
Trigger Voltage
1,000V
Multilayer fabrication technology.
material to switch between high
•
Clamping Voltage
150V, typical
These components are designed to
resistance and low resistance states,
•
Rated Voltage
24 VDC (max)
suppress a variety of transient events,
PulseGuard suppressors shunt ESD
•
Peak Current
45A, at 15 kV
including those specified by the IEC or
transients away from sensitive circuitry.
other standards used for Electromagnetic
Specifications
They are ideal for use on high-speed
Body Material:
Glass epoxy
data and signal communication lines
that link the IC or ASIC to the outside
are typically applied to protect integrated
circuits and other components at the
Terminations:
Tin-lead
of the electronic equipment. PulseGuard
suppressors are designed to increase
circuit board level.
Voltage Variable Material:
Littelfuse polymeric formula
the reliability of electronic equipment
as well as allowing compliance with ESD
Compliance (EMC). Multilayer varistor’s
The wide operating voltage and energy
range make them suitable for numerous
Applications
•
Suppression of inductive switching or
other transient events such as EFT and
surge voltage at the circuit board level
•
ESD protection for components
sensitive to IEC 61000-4-2,
MIL-STD-883C Method 3015.7,
and other industry specifications
(see also the MLE or MLN series)
•
Provides on-board transient voltage
protection for ICs and transistors
and wave soldering procedures.
•
Used to help achieve electromagnetic
compliance of end products
Specifications
•
Replace larger surface mount TVS
zeners in many applications
applications on power supply, control
test specifications (IEC 61000-4-2, MIL-
and signal lines.
STD-883).
Multilayer varistors are manufactured
Dimensions
from semiconducting ceramics providing
bidirectional voltage clamping and are
Reference Dimensions
Recommended Pad Layout
PGB0010603
b
1.6
(.063")
c
a
b
c
d
e
e
a
0.8
(.031")
supplied in leadless, surface mount
0.5
(.02")
Dimensions (in.)
Reflow
Wave
1.27 (.050″)
1.27 (.050″)
0.76 (.030″)
0.76 (.030″)
0.51 (.020″)
0.76 (.030″)
N/A
N/A
3.05 (.120″)
3.30 (.130″)
form, compatible with modern reflow
Continuous:
PGB002ST23
2.84
(.112")
b
2.44
(.096")
a
+
a
b
c
d
e
e
c
+
d
1.9
(.075")
Dimensions (in.)
Reflow
Wave
1.27 (.050″)
1.27 (.050″)
0.89 (.035″)
0.89 (.035″)
1.02 (.040″)
1.27 (.050″)
2.03 (.080″)
2.29 (.090″)
3.56 (.140″)
3.81 (.150″)
Steady State Applied Voltage:
Packaging
0402, 0603, 0805, 1206, 1210,
1812, 2220, size options
DC Voltage Range (VM(DC))
3.5 to 120V
AC Voltage Range (VM(AC)RMS)
2.5 to 104V
Transient:
PGB008CA10
5.03
(.198")
2.11
(.083")
d +
+
+
a
+
e
1.09
(.043")
f
g
c
b
a
b
c
d
e
f
g
Dimensions (in.)
Reflow
Wave
0.64 (.025″)
0.91 (.036″)
1.27 (.050″)
1.52 (.060″)
2.57 (.101″)
3.02 (.119″)
1.30 (.051″)
1.19 (.047″)
1.09 (.043″)
1.09 (.043″)
0.76 (.030″)
0.76 (.030″)
4.85 (.191″)
5.03 (.198″)
Non-Repetitive Surge Current,
8/20µs Waveform, (ITM) 30 to 250A
Non-Repetitive Surge Energy,
10/1000µs Waveform, (WTM) 0.1 to 1.2J
Ordering Information
Refer to Suppression Guide for more information.
Ordering Information
Consult Littelfuse website or Littelfuse Electronic Designer’s Guide for more information.
38
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
39
Contents
Overvoltage / Suppression Protection
Surface Mount ESD Suppressors
PulseGuard Series
Glossary
Chart
Previous
Overvoltage / Suppression Protection
Multilayer Surface Mount Transient Voltage Surge Suppressors
ML, MLE, MLN Series
®
PulseGuard ESD suppressors provide
Electrical Characteristics
The multilayer varistor family of
Features
protection for electronic devices against
•
<0.055pF @ 1 MHz
Transient Voltage Surge Suppression
•
Multilayer ceramic
construction technology
•
-55°C to 125°C operating
temperature range
•
Wide operating voltage range
VM(DC) = 3.5V to 120
•
Standard low capacitance
types available
•
Rated for energy (10 x 100)
•
Rated for surge current (8 x 20)
•
Inherent bidirectional clamping
•
No plastic or epoxy packaging assures
better than UL 94V-0 flammability rating
Capacitance
the threat of electrostatic discharge
•
Leakage Current
<1.0µA @ 5 VDC
devices is based on the Littelfuse
(ESD). Employing a voltage-variable
•
Trigger Voltage
1,000V
Multilayer fabrication technology.
material to switch between high
•
Clamping Voltage
150V, typical
These components are designed to
resistance and low resistance states,
•
Rated Voltage
24 VDC (max)
suppress a variety of transient events,
PulseGuard suppressors shunt ESD
•
Peak Current
45A, at 15 kV
including those specified by the IEC or
transients away from sensitive circuitry.
other standards used for Electromagnetic
Specifications
They are ideal for use on high-speed
Body Material:
Glass epoxy
data and signal communication lines
that link the IC or ASIC to the outside
suppressors are designed to increase
circuits and other components at the
circuit board level.
Voltage Variable Material:
Littelfuse polymeric formula
the reliability of electronic equipment
as well as allowing compliance with ESD
Compliance (EMC). Multilayer varistor’s
are typically applied to protect integrated
Terminations:
Tin-lead
of the electronic equipment. PulseGuard
The wide operating voltage and energy
range make them suitable for numerous
Applications
•
Suppression of inductive switching or
other transient events such as EFT and
surge voltage at the circuit board level
•
ESD protection for components
sensitive to IEC 61000-4-2,
MIL-STD-883C Method 3015.7,
and other industry specifications
(see also the MLE or MLN series)
•
Provides on-board transient voltage
protection for ICs and transistors
and wave soldering procedures.
•
Used to help achieve electromagnetic
compliance of end products
Specifications
•
Replace larger surface mount TVS
zeners in many applications
applications on power supply, control
test specifications (IEC 61000-4-2, MIL-
and signal lines.
STD-883).
Multilayer varistors are manufactured
Dimensions
from semiconducting ceramics providing
bidirectional voltage clamping and are
Reference Dimensions
Recommended Pad Layout
PGB0010603
supplied in leadless, surface mount
b
1.6
(.063")
c
a
b
c
d
e
e
a
0.8
(.031")
Next
0.5
(.02")
Dimensions (in.)
Reflow
Wave
1.27 (.050″)
1.27 (.050″)
0.76 (.030″)
0.76 (.030″)
0.51 (.020″)
0.76 (.030″)
N/A
N/A
3.05 (.120″)
3.30 (.130″)
form, compatible with modern reflow
Continuous:
PGB002ST23
2.84
(.112")
b
2.44
(.096")
a
+
a
b
c
d
e
e
c
+
d
1.9
(.075")
Dimensions (in.)
Reflow
Wave
1.27 (.050″)
1.27 (.050″)
0.89 (.035″)
0.89 (.035″)
1.02 (.040″)
1.27 (.050″)
2.03 (.080″)
2.29 (.090″)
3.56 (.140″)
3.81 (.150″)
Steady State Applied Voltage:
Packaging
0402, 0603, 0805, 1206, 1210,
1812, 2220, size options
DC Voltage Range (VM(DC))
3.5 to 120V
AC Voltage Range (VM(AC)RMS)
2.5 to 104V
Transient:
PGB008CA10
5.03
(.198")
2.11
(.083")
d +
+
+
a
+
e
1.09
(.043")
f
g
c
b
a
b
c
d
e
f
g
Dimensions (in.)
Reflow
Wave
0.64 (.025″)
0.91 (.036″)
1.27 (.050″)
1.52 (.060″)
2.57 (.101″)
3.02 (.119″)
1.30 (.051″)
1.19 (.047″)
1.09 (.043″)
1.09 (.043″)
0.76 (.030″)
0.76 (.030″)
4.85 (.191″)
5.03 (.198″)
Non-Repetitive Surge Current,
8/20µs Waveform, (ITM) 30 to 250A
Non-Repetitive Surge Energy,
10/1000µs Waveform, (WTM) 0.1 to 1.2J
Ordering Information
Refer to Suppression Guide for more information.
Ordering Information
Consult Littelfuse website or Littelfuse Electronic Designer’s Guide for more information.
38
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
39
Contents
Glossary
Chart
Previous
Overvoltage / Suppression Protection
Surgector™ Transient Voltage Suppressors
SGT Surface Mount Series
Next
Overvoltage / Suppression Protection
Surgector™ Transient Voltage Suppressors
SGT (TO-202) Series
Surgectors are designed to suppress
Features
Features
lightning and other transients that are
•
UL recognized component listed to
UL 497B, file E135010
Bidirectional Surge Suppressors:
(SGT 23B13, SGT 27B13, SGT 27B27)
Gate Controlled Unidirectional Surge
Suppressors: (SGT 27S10, SGT 27S23)
•
Rated for telecom industry transient
surge levels:
– Telcordia GR-1089-CORE
– ITU CCITT K.20/.21
– FCC Part 68
•
Constructed with a thyristor whose gate
contains a special diffused section
which acts as a zener diode
•
Fast turn-on, high holding
current thyristors
•
•
Zener diode section permits anode
voltage turn on of the structure
Low profile package, compatible with
PCMCIA cards, UL-94V-0 listed
•
Packaging: Modified TO-202
Provides excellent voltage limiting,
even on very fast rise time transients,
when coupled with a user supplied
voltage level detector
•
•
Offered in the most common VDRM
voltage types
Unidirectional Surge Suppressors:
(SGT 03U13, SGT 06U13, SGT 23U13)
High holding current allows for
return to a high impedance off state
after a transient
transient overvoltage. Surgectors can be
•
Low on-state voltage
•
Offers unidirectional clamping action
•
Packaging: Modified TO-202
an integral part of a Telephone Line
•
Cross to common industry types
•
Protector Unit, meeting AC Power
•
High minimum holding content
Designed to protect telecommunications
equipment, data links, and other
sensitive electrical circuits from damage
by transients, lightning strikes, load
changes, and power line crosses
Continuous Reverse Voltage, VDRM
58V – 300V
•
Packaging: Modified TO-202
Transient Peak Surge Current, IPP
8 x 20µs, 200A (B Types), 250A (C Types)
10 x 160µs, 150A (B Types), 200A (C Types)
10 x 560µs, 100A (B Types), 150A (C Types)
10 x 1000µs, 50A (B Types), 100A (C Types)
Specifications
Part #
Off-State
Current
(max)
@25°C
Critical Rate of Rise of Voltage, dv/dt
2000V/µs
SGT 27B27
200nA
100µA
SGT 23B13
200nA
100µA
Temperature Range (TA)
-40°C to 85°C
SGT 27B13
200nA
SGT 03U13
induced on the telecommunications
system as described in various
international safety and compatibility
standards. These devices can help
provide the secondary protection for
telecommunications equipment such as
telephones, modems, line cards and
•
other devices subject to damage from
Cross criteria when used in association
with properly selected resistors/PTC/
fuse combinations.
Littelfuse Surface Mount Surgectors are
manufactured using a silicon thyristor
technology, offering bidirectional voltage
clamping for transients of either polarity
Specifications
from a single chip.
The Surgector devices described are
manufactured with the DO-214AA low
profile case style and are second source
equivalent parts to industry “SIDAC”
types. Surface Mount Surgectors are
supplied in embossed carrier tape on
330mm (13 in.) reels.
Applications
•
Secondary protectors for telephones,
fax machines, modems, line cards, SLIC
and TLPU modules
•
Alarm systems
•
CATV lines
•
Remote sensors
•
Power supplies
Thermal Resistance
(Typical, Note 1) (ΘSA)
J Bend Package C Types, 85° C/W
J Bend Package B Types, 90° C/W
Max Storage Temperature Range
-65°C to 150°C
Bidirectional
Off-State
Current Reverse
(max)
Current
@85°C
@25°C
Reverse
Current
@85°C
Clamping
Voltage
(min/max)
Breakover
Voltage
Holding
Current
On-State
Voltage
Main
Terminal
Capacitance
—
—
270V/325V
345V
270mA
2V
80pF
—
—
230V/270V
240V
130mA
2V
50pF
100µA
—
—
270V/325V
345V
130mA
2V
50pF
50nA
10µA
1mA
10mA
33V/ —
50V
130mA
2V
90pF
SGT 06U13
50nA
10µA
1mA
10mA
60V/ —
85V
130mA
2V
90pF
SGT 23U13
50nA
10µA
1mA
10mA
230V/ —
275V
130mA
2V
90pF
SGT 27S10
100nA
50µA
—
—
—
285V
100mA
2V
90pF
SGT 27S23
100nA
50µA
—
—
—
285V
230mA
2V
90pF
Unidirectional
Gate Controlled Unidirectional
Max Junction Temperature (Plastic Package)
150°C
Max Lead Temperature (Soldering 5s)
300°C
Ordering Information
SGT 10 S 10
Holding current in mA divided by 10
Type of Surgector (U = Unidirectional B = Bidirectional S = SCR)
Off-state voltage rating divided by 10
Ordering Information
Refer to Suppression Guide for more information.
40
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
41
Contents
Overvoltage / Suppression Protection
Surgector™ Transient Voltage Suppressors
SGT Surface Mount Series
Glossary
Chart
Previous
Overvoltage / Suppression Protection
Surgector™ Transient Voltage Suppressors
SGT (TO-202) Series
Surgectors are designed to suppress
Features
Features
lightning and other transients that are
•
UL recognized component listed to
UL 497B, file E135010
Bidirectional Surge Suppressors:
(SGT 23B13, SGT 27B13, SGT 27B27)
Gate Controlled Unidirectional Surge
Suppressors: (SGT 27S10, SGT 27S23)
•
Rated for telecom industry transient
surge levels:
– Telcordia GR-1089-CORE
– ITU CCITT K.20/.21
– FCC Part 68
•
Constructed with a thyristor whose gate
contains a special diffused section
which acts as a zener diode
•
Fast turn-on, high holding
current thyristors
•
•
Zener diode section permits anode
voltage turn on of the structure
Low profile package, compatible with
PCMCIA cards, UL-94V-0 listed
•
Packaging: Modified TO-202
Provides excellent voltage limiting,
even on very fast rise time transients,
when coupled with a user supplied
voltage level detector
•
•
Offered in the most common VDRM
voltage types
Unidirectional Surge Suppressors:
(SGT 03U13, SGT 06U13, SGT 23U13)
High holding current allows for
return to a high impedance off state
after a transient
transient overvoltage. Surgectors can be
•
Low on-state voltage
•
Offers unidirectional clamping action
•
Packaging: Modified TO-202
an integral part of a Telephone Line
•
Cross to common industry types
•
Protector Unit, meeting AC Power
•
High minimum holding content
Designed to protect telecommunications
equipment, data links, and other
sensitive electrical circuits from damage
by transients, lightning strikes, load
changes, and power line crosses
Continuous Reverse Voltage, VDRM
58V – 300V
•
Packaging: Modified TO-202
Transient Peak Surge Current, IPP
8 x 20µs, 200A (B Types), 250A (C Types)
10 x 160µs, 150A (B Types), 200A (C Types)
10 x 560µs, 100A (B Types), 150A (C Types)
10 x 1000µs, 50A (B Types), 100A (C Types)
Specifications
Part #
Off-State
Current
(max)
@25°C
Critical Rate of Rise of Voltage, dv/dt
2000V/µs
SGT 27B27
200nA
100µA
SGT 23B13
200nA
100µA
Temperature Range (TA)
-40°C to 85°C
SGT 27B13
200nA
SGT 03U13
induced on the telecommunications
system as described in various
international safety and compatibility
standards. These devices can help
provide the secondary protection for
telecommunications equipment such as
telephones, modems, line cards and
•
other devices subject to damage from
Cross criteria when used in association
with properly selected resistors/PTC/
fuse combinations.
Littelfuse Surface Mount Surgectors are
manufactured using a silicon thyristor
technology, offering bidirectional voltage
clamping for transients of either polarity
Specifications
from a single chip.
The Surgector devices described are
manufactured with the DO-214AA low
profile case style and are second source
equivalent parts to industry “SIDAC”
types. Surface Mount Surgectors are
supplied in embossed carrier tape on
330mm (13 in.) reels.
Applications
•
Secondary protectors for telephones,
fax machines, modems, line cards, SLIC
and TLPU modules
•
Alarm systems
•
CATV lines
•
Remote sensors
•
Power supplies
Next
Thermal Resistance
(Typical, Note 1) (ΘSA)
J Bend Package C Types, 85° C/W
J Bend Package B Types, 90° C/W
Max Storage Temperature Range
-65°C to 150°C
Bidirectional
Off-State
Current Reverse
(max)
Current
@85°C
@25°C
Reverse
Current
@85°C
Clamping
Voltage
(min/max)
Breakover
Voltage
Holding
Current
On-State
Voltage
Main
Terminal
Capacitance
—
—
270V/325V
345V
270mA
2V
80pF
—
—
230V/270V
240V
130mA
2V
50pF
100µA
—
—
270V/325V
345V
130mA
2V
50pF
50nA
10µA
1mA
10mA
33V/ —
50V
130mA
2V
90pF
SGT 06U13
50nA
10µA
1mA
10mA
60V/ —
85V
130mA
2V
90pF
SGT 23U13
50nA
10µA
1mA
10mA
230V/ —
275V
130mA
2V
90pF
SGT 27S10
100nA
50µA
—
—
—
285V
100mA
2V
90pF
SGT 27S23
100nA
50µA
—
—
—
285V
230mA
2V
90pF
Unidirectional
Gate Controlled Unidirectional
Max Junction Temperature (Plastic Package)
150°C
Max Lead Temperature (Soldering 5s)
300°C
Ordering Information
SGT 10 S 10
Holding current in mA divided by 10
Type of Surgector (U = Unidirectional B = Bidirectional S = SCR)
Off-state voltage rating divided by 10
Ordering Information
Refer to Suppression Guide for more information.
40
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
41
Contents
Glossary
Chart
Previous
Overvoltage / Suppression Protection
Next
Overvoltage / Suppression Protection
Transient Voltage Suppression —
Radial Metal Oxide Varistor (MOV) Components
ZA, RA, LA, UltraMOV, C-III and TMOV Series
Transient Voltage Suppression — Packaged High Energy (MOV’s)
DA/DB and BA/BB Series
The radial leaded Metal Oxide Varistor
Applications
The BA and BB Series transient surge
Features
(MOV) components listed below are
•
Cellular/cordless phones
suppressors are heavy-duty industrial
•
intended for a comprehensive range
•
Modems
metal oxide varistors (MOV’s) designed
•
Secondary phone protectors
UL Recognized as “Transient Voltage
Surge Suppressors” to Std. 1449,
second edition (BA Types)
•
Data line connectors
•
Rigid terminals for secure wire contact
•
Repeaters
series vary in size and package style
•
Line cards
used in the telecommunications industry.
•
Case design provides complete
electrical isolation of disc assembly
in order to meet specific performance
•
COE
These UL recognized varistors have sim-
•
Wide operating voltage range
as well as manufacturing needs of
•
T1/E1/ISDN
ilar package construction but differ
•
Hand-held/portable devices
•
Very high energy absorption capability
the user. The table below forms a
in size and rating. The BA models
•
I/O port and interfaces
•
No derating up to 85°C ambient
•
UPS
•
AC panels
of applications and transient voltage
suppression products. The product
selection guide matrix for the designer
by illustrating the various device’s
working voltage transient energy and
peak current ratings range. Additional
•
AC power taps
•
TVSS devices
to provide surge protection for power
supplies and power distribution centers
are rated from 130V to 880VM(AC).
The BB models are rated from 1100V
Applications
to 2800VM(AC).
•
A/C power distribution
•
Power generation
•
Industrial controllers
product information can be found in
•
Power meters
The DA Series devices feature rigid
the Littelfuse SP101 catalog.
•
Power supplies
terminals to insure secure wire contacts.
•
Consumer electronics
Both the DA and DB Series feature
•
Distribution panels
improved creep and strike distance
capability to minimize breakdown
Specifications
along the package surface design that
Radial Leaded MOVs
Series Name
ZA
RA
LA
C-III
UltraMOV
Zinc
Oxide
Zinc
Oxide
Zinc
Oxide
Zinc
Oxide
Zinc
Oxide
Operating AC
Voltage Range
4 – 460
4 – 275
130 – 1000
130 – 320
130 – 625
Operating DC
Voltage Range
5.5 – 615
5.5 – 369
175 – 1200
—
170 – 825
Peak Current
Range (A)*
50 – 6,500
150 – 6,500
1,200 – 6,500
Peak Energy
Range (J)
0.1 – 52
0.4 – 140
11 – 360
45 – 220
12.5 – 400
Temperature
Range (°C)
-55 – +85
-55 – +125
-55 – +85
-55 – +85
-55 – +85
1
1
1
1
1
Radial
Leaded
Packaged
Radial
Leaded
Radial
Leaded
Radial
Leaded
Disc Size
(MOV)
5, 7, 10
14, 20mm
8, 16, 22mm
7, 10, 14
20mm
14, 20mm
7, 10, 14
20mm
Agency
Approvals
UL, VDE
UL, CSA
& VDE
UL, CSA
& VDE
UL, CSA
& VDE
UL, CSA
Technology
Type
Lines
Protected
Mount/Form
Factor
6,000 – 9,000 1,750 – 10,000
provides complete electrical isolation
of the disc subassembly.
Specifications
Continuous:
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS)
DC Voltage Range (VM(DC))
Transient:
Peak Pulse Current (ITM)
for 8/20uS Current Wave
Single Pulse Energy Range
for 2ms Current Square Wave (WTM)
Operating Ambient Temp. Range (TA)
Storage Temp. Range (TSTG)
BA Series
BB Series
DA/DB Series
130V to 880V
175V to 1150V
1100V to 2800V
1400V to 3500V
130V to 750V
175V to 970V
50,000A to 70,000A
70,000A
30,000 to 40,000A
450J to 3200J
-55°C to 85°C
-55°C to 125°C
3800J to 10,000J
-55°C to 85°C
-55°C to 125°C
270J to 1050J
-55°C to 85°C
-55°C to 125°C
Ordering Information
Refer to Suppression Guide for more information.
*Not an applicable parameter for Crowbar devices.
Ordering Information
Refer to Suppression Guide for more information.
42
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
43
Contents
Glossary
Overvoltage / Suppression Protection
Transient Voltage Suppression —
Radial Metal Oxide Varistor (MOV) Components
ZA, RA, LA, UltraMOV, C-III and TMOV Series
Chart
Previous
Overvoltage / Suppression Protection
Transient Voltage Suppression — Packaged High Energy (MOV’s)
DA/DB and BA/BB Series
The radial leaded Metal Oxide Varistor
Applications
The BA and BB Series transient surge
Features
(MOV) components listed below are
•
Cellular/cordless phones
suppressors are heavy-duty industrial
•
intended for a comprehensive range
•
Modems
metal oxide varistors (MOV’s) designed
•
Secondary phone protectors
UL Recognized as “Transient Voltage
Surge Suppressors” to Std. 1449,
second edition (BA Types)
•
Data line connectors
•
Rigid terminals for secure wire contact
•
Repeaters
series vary in size and package style
•
Line cards
used in the telecommunications industry.
•
Case design provides complete
electrical isolation of disc assembly
in order to meet specific performance
•
COE
These UL recognized varistors have sim-
•
Wide operating voltage range
as well as manufacturing needs of
•
T1/E1/ISDN
ilar package construction but differ
•
Hand-held/portable devices
•
Very high energy absorption capability
the user. The table below forms a
in size and rating. The BA models
•
I/O port and interfaces
•
No derating up to 85°C ambient
•
UPS
•
AC panels
of applications and transient voltage
suppression products. The product
selection guide matrix for the designer
by illustrating the various device’s
working voltage transient energy and
peak current ratings range. Additional
•
AC power taps
•
TVSS devices
to provide surge protection for power
supplies and power distribution centers
are rated from 130V to 880VM(AC).
The BB models are rated from 1100V
Applications
to 2800VM(AC).
•
A/C power distribution
•
Power generation
•
Industrial controllers
product information can be found in
•
Power meters
The DA Series devices feature rigid
the Littelfuse SP101 catalog.
•
Power supplies
terminals to insure secure wire contacts.
•
Consumer electronics
Both the DA and DB Series feature
•
Distribution panels
improved creep and strike distance
capability to minimize breakdown
Specifications
along the package surface design that
Radial Leaded MOVs
Series Name
ZA
RA
LA
C-III
UltraMOV
Zinc
Oxide
Zinc
Oxide
Zinc
Oxide
Zinc
Oxide
Zinc
Oxide
Operating AC
Voltage Range
4 – 460
4 – 275
130 – 1000
130 – 320
130 – 625
Operating DC
Voltage Range
5.5 – 615
5.5 – 369
175 – 1200
—
170 – 825
Peak Current
Range (A)*
50 – 6,500
150 – 6,500
1,200 – 6,500
Peak Energy
Range (J)
0.1 – 52
0.4 – 140
11 – 360
45 – 220
12.5 – 400
Temperature
Range (°C)
-55 – +85
-55 – +125
-55 – +85
-55 – +85
-55 – +85
1
1
1
1
1
Radial
Leaded
Packaged
Radial
Leaded
Radial
Leaded
Radial
Leaded
Disc Size
(MOV)
5, 7, 10
14, 20mm
8, 16, 22mm
7, 10, 14
20mm
14, 20mm
7, 10, 14
20mm
Agency
Approvals
UL, VDE
UL, CSA
& VDE
UL, CSA
& VDE
UL, CSA
& VDE
UL, CSA
Technology
Type
Lines
Protected
Mount/Form
Factor
Next
6,000 – 9,000 1,750 – 10,000
provides complete electrical isolation
of the disc subassembly.
Specifications
Continuous:
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS)
DC Voltage Range (VM(DC))
Transient:
Peak Pulse Current (ITM)
for 8/20uS Current Wave
Single Pulse Energy Range
for 2ms Current Square Wave (WTM)
Operating Ambient Temp. Range (TA)
Storage Temp. Range (TSTG)
BA Series
BB Series
DA/DB Series
130V to 880V
175V to 1150V
1100V to 2800V
1400V to 3500V
130V to 750V
175V to 970V
50,000A to 70,000A
70,000A
30,000 to 40,000A
450J to 3200J
-55°C to 85°C
-55°C to 125°C
3800J to 10,000J
-55°C to 85°C
-55°C to 125°C
270J to 1050J
-55°C to 85°C
-55°C to 125°C
Ordering Information
Refer to Suppression Guide for more information.
*Not an applicable parameter for Crowbar devices.
Ordering Information
Refer to Suppression Guide for more information.
42
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
43
Contents
Glossary
Chart
Previous
Overvoltage / Suppression Protection
Next
Overvoltage / Suppression Protection
Transient Voltage Suppression —
Industrial High Energy Metal Oxide Disc Varistors
NA34, CA50 and CA60 Series
Transient Voltage Suppression — Leaded High Energy MOV’s
HA, HB34 and HC Series
This family of High Energy Metal Oxide
Features
This family of Leaded High Energy Metal
Features
Disc Varistors are intended for
•
Provided in disc form for unique
packaging by the customer
Oxide Varistors (MOV’s) are intended
•
UL Recognized and CSA certified as
“Transient Voltage Surge Suppressors”
•
Designed for pressure contacts
and/or disc stacking
duty industrial transient suppression
•
Wide operating voltage range:
VM(AC)RMS: 130V to 750V
•
Solderable electrode finish options
•
•
Wide operating voltage range:
VM(AC)RMS: 130V to 750V
High energy absorption capability:
WTM = 200J to 1050J
•
High peak pulse current capability:
ITM — 25,000A to 40,000A
•
Rigid terminals for secure mounting
•
No derating up to 85°C ambient
applications requiring heavy-duty
industrial transient suppression provided
by a device with unique electrical contact
or packaging methods. The electrode
finish of these devices is solderable and
can also be used with pressure contacts.
•
Discs of the same size can be stacked.
•
The CA series of industrial disc varistors
are available in three diameters, 32mm,
•
Very high energy absorption capability:
WTM = 200J to 10,000J
for a comprehensive range of heavy-
applications. They are designed to
provide secondary surge protection in
power distribution panels, power supplies,
and industrial service entrance equipment
used by the telecommunications industry.
High peak pulse current capability:
ITM — 20,000A to 70,000A
The devices comprise 32mm and 40mm
No derating up to 85°C ambient
circular MOV discs and 34mm square
Applications
MOV forms.
•
Power supplies
40mm, and 60mm with disc thickness
ranging from 1.8mm to 32mm. They are
Applications
•
UPS
available in a wide voltage range from
•
AC/DC power distribution
The HA32 and HA40 Series utilize the
•
A/C power distribution
130V to 2800V.
•
Meter protection
32mm and 40mm circular MOV discs
•
Meter protection
•
Surge arresters
and provide rigid terminals for screw
•
Industrial controllers
•
High energy surge
protection devices (SPD)
mounting. These devices are also
•
Data centers
available in a clipped lead version,
•
DIN rail mounted SPD
HC32 and HC40, for through hole board
High energy surge protection
devices (SPD)
•
DIN rail mounted SPD
The NA series is a square 34mm device
for voltage applications ranging from
130V to 750V.
•
placement. The HB34 Series utilizes a
Specifications
Continuous:
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS)
DC Voltage Range (VM(DC))
Transient:
Peak Pulse Current (ITM)
for 8/20uS Current Wave
Single Pulse Energy Range
for 2ms Current Square Wave (WTM)
Operating Ambient Temp. Range (TA)
Storage Temp. Range (TSTG)
34mm square MOV and, with similar
CA Series
NA Series
130V to 2800V
175V to 3500V
130V to 750V
175V to 970V
performance to the HA40 Series, offers
a low profile solution in a crimped
leaded configuration for through hole
board placement.
20,000A to 70,000A
40,000A
200J to 10,000J
-55°C to 85°C
-55°C to 125°C
270J to 1050J
-55°C to 85°C
-55°C to 125°C
Ordering Information
Refer to Suppression Guide for more information.
Specifications
Continuous:
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS)
DC Voltage Range (VM(DC))
Transient:
Peak Pulse Current (ITM)
for 8/20uS Current Wave
Single Pulse Energy Range
for 2ms Current Square Wave (WTM)
Operating Ambient Temp. Range (TA)
Storage Temp. Range (TSTG)
HA Series
HB Series
130V to 750V
175V to 970V
130V to 750V
175V to 970V
25,000A to 40,000A
30,000A to 40,000A
200J to 1050J
-55°C to 85°C
-55°C to 125°C
270J to 1050J
-55°C to 85°C
-55°C to 125°C
Ordering Information
Refer to Suppression Guide for more information.
44
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
45
Contents
Glossary
Overvoltage / Suppression Protection
Transient Voltage Suppression —
Industrial High Energy Metal Oxide Disc Varistors
NA34, CA50 and CA60 Series
Chart
Previous
Overvoltage / Suppression Protection
Transient Voltage Suppression — Leaded High Energy MOV’s
HA, HB34 and HC Series
This family of High Energy Metal Oxide
Features
This family of Leaded High Energy Metal
Features
Disc Varistors are intended for
•
Provided in disc form for unique
packaging by the customer
Oxide Varistors (MOV’s) are intended
•
UL Recognized and CSA certified as
“Transient Voltage Surge Suppressors”
•
Designed for pressure contacts
and/or disc stacking
duty industrial transient suppression
•
Wide operating voltage range:
VM(AC)RMS: 130V to 750V
•
Solderable electrode finish options
•
•
Wide operating voltage range:
VM(AC)RMS: 130V to 750V
High energy absorption capability:
WTM = 200J to 1050J
•
High peak pulse current capability:
ITM — 25,000A to 40,000A
•
Rigid terminals for secure mounting
•
No derating up to 85°C ambient
applications requiring heavy-duty
industrial transient suppression provided
by a device with unique electrical contact
or packaging methods. The electrode
finish of these devices is solderable and
can also be used with pressure contacts.
•
Discs of the same size can be stacked.
•
The CA series of industrial disc varistors
are available in three diameters, 32mm,
•
Very high energy absorption capability:
WTM = 200J to 10,000J
for a comprehensive range of heavy-
applications. They are designed to
provide secondary surge protection in
power distribution panels, power supplies,
and industrial service entrance equipment
used by the telecommunications industry.
High peak pulse current capability:
ITM — 20,000A to 70,000A
The devices comprise 32mm and 40mm
No derating up to 85°C ambient
circular MOV discs and 34mm square
Applications
MOV forms.
•
Power supplies
40mm, and 60mm with disc thickness
ranging from 1.8mm to 32mm. They are
Applications
•
UPS
available in a wide voltage range from
•
AC/DC power distribution
The HA32 and HA40 Series utilize the
•
A/C power distribution
130V to 2800V.
•
Meter protection
32mm and 40mm circular MOV discs
•
Meter protection
•
Surge arresters
and provide rigid terminals for screw
•
Industrial controllers
•
High energy surge
protection devices (SPD)
mounting. These devices are also
•
Data centers
available in a clipped lead version,
•
DIN rail mounted SPD
HC32 and HC40, for through hole board
High energy surge protection
devices (SPD)
•
DIN rail mounted SPD
The NA series is a square 34mm device
for voltage applications ranging from
130V to 750V.
•
placement. The HB34 Series utilizes a
Specifications
Continuous:
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS)
DC Voltage Range (VM(DC))
Transient:
Peak Pulse Current (ITM)
for 8/20uS Current Wave
Single Pulse Energy Range
for 2ms Current Square Wave (WTM)
Operating Ambient Temp. Range (TA)
Storage Temp. Range (TSTG)
Next
34mm square MOV and, with similar
CA Series
NA Series
130V to 2800V
175V to 3500V
130V to 750V
175V to 970V
performance to the HA40 Series, offers
a low profile solution in a crimped
leaded configuration for through hole
board placement.
20,000A to 70,000A
40,000A
200J to 10,000J
-55°C to 85°C
-55°C to 125°C
270J to 1050J
-55°C to 85°C
-55°C to 125°C
Ordering Information
Refer to Suppression Guide for more information.
Specifications
Continuous:
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS)
DC Voltage Range (VM(DC))
Transient:
Peak Pulse Current (ITM)
for 8/20uS Current Wave
Single Pulse Energy Range
for 2ms Current Square Wave (WTM)
Operating Ambient Temp. Range (TA)
Storage Temp. Range (TSTG)
HA Series
HB Series
130V to 750V
175V to 970V
130V to 750V
175V to 970V
25,000A to 40,000A
30,000A to 40,000A
200J to 1050J
-55°C to 85°C
-55°C to 125°C
270J to 1050J
-55°C to 85°C
-55°C to 125°C
Ordering Information
Refer to Suppression Guide for more information.
44
Consult Littelfuse web site for more information
www.littelfuse.com
Consult Littelfuse web site for more information
www.littelfuse.com
45
Contents
Glossary
Chart
Previous
Overvoltage / Suppression Protection
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Transient Voltage Suppression
SP72X Series SCR/Diode Arrays
Glossary
The SP72X family of diode arrays are
Features
designed to withstand extreme ESD
•
Wide selection of array sizes
conditions and provide multiple lines
•
High energy rating
of transient voltage suppression (TVS)
•
Low profile surface mount packages
protection. The SP series protects data,
•
Low capacitance and leakage
signal and control lines by diverting transients away from sensitive components.
The SP720 has two protection SCR/diode
structures per input and a total of 14
available inputs can be used to protect
up to 14 external signal or bus lines.
Specifications
Capacitance:
3.0 to 5.0 pf; 1 to 2 pf measured
Leakage Current:
1.0 to 2.0 nA @ 25°C
Operating Voltage:
1.0 to 30 VDC
The SP721 and SP723 have two
protection SCR/diode structures per
CLEC (Competitive Local
Exchange Carrier) A competitor to
local telephone companies that has been
granted permission to offer local telephone
service. CLECs compete with independent
and Bell telephone companies.
PBX (Private Branch Exchange)
A private telephone switching system,
usually located on a customer’s premises,
that provides intra-premises exchange
telephone service, as well as access to
the public exchange network and/or
private facilities.
Surgector A device intended to
suppress lightning and other transients.
(Also known as thyristors)
CO (Central Office) The location
that contains equipment to route calls
to and from customers. It also connects
customers to Internet Service Providers
and long distance carriers.
POP (Point of Presence) The point
where a long distance company’s equipment
is connected to the local telephone
company’s central office.
Transient A short duration spike
in voltage.
CPE (Customer Premise
Equipment) Telephone systems, modems
and terminals installed at
customer sites.
POTS (Plain Old Telephone Service)
Analog telephone lines connected to most
residential and small business users from
their nearest local telephone company.
ESD (Electrostatic Discharge)
The rapid transfer of electrostatic charge
between objects.
PSTN (Public Switched
Telephone Network)
The network of transmission and
switching systems, signaling processors,
and associated operations support
systems (OSS) that is shared by the public.
Sometimes referred to as PTN, PSN, PN
(Public Telephone Network, Public
Switched Network, Public Network.)
that can be used to protect up to six
external signal or bus lines.
ESD Suppressors Protective devices
connected in parallel to the load that shunt
damaging voltages to ground.
The SP724 is comprised of bipolar
SCR/diode structures to protect up to
four independent lines by clamping
ILEC (Incumbent Local Exchange
Carrier) Bell and independent telephone
companies, established before the
Telecommunications act of 1996, that
sell local telephone service.
transients of either polarity to the power
supply rails. The SP724 offers very low
leakage and low input capacitance.
Specifications
IEC 1000-4-2
EIAJ
IC121
HBM Direct
HBM
Discharge
Direct Two Parallel
HBM Air Discharge
Inputs
Machine
Model
MIL-STD 3015.7
Part #
Inputs
Package
Styles
Modified
HBM
Standard
HBM
SP720
14
16 Ld
PDIP, SOIC
15kV
6kV
15kV
4kV
8kV
SP721
6
8 Ld
PDIP, SOIC
15kV
6kV
15kV
4kV
8kV
1kV
SP723
6
8 Ld
PDIP, SOIC
15kV
10kV
15kV
8kV
—
2kV
SP724
4
6 Ld
2kV
15kV
8kV
—
2kV
Ordering Information
Refer to Suppression Guide for more information.
46
Consult Littelfuse web site for more information
Wireless Base Station A remote
location next to a cellular tower that
contains communication equipment to
support wireless calls.
ESD rated to IEC 1000-4-2 (level 4)
input and there are a total of six inputs
SOT-23, 6-Pin 8kV (1)
T1 A North American and Japanese
standard for communicating at
1.54 million bits per second.
www.littelfuse.com
1kV
IXC (Interexchange Carrier)
Carriers that provide long distance service
between CLECs.
LEC (Local Exchange Carrier)
Any company authorized by the state
public utility commission to sell local
telephone service.
MOV (Metal Oxide Varistor)
A component that is used to protect circuits
by suppressing or diverting transients.
MTSO (Mobile Telephone
Switching Office) This location
contains all the equipment required for
mobile wireless communications.
PTC Device (Positive Temperature
Coefficient) A protective device with
electrical characteristics that change with
the device’s temperature. PTC protective
devices temporarily limit current by
dramatically increasing in resistance
when subjected to overcurrents.
RBOC (Regional Bell Operating
Company) Regional Bell Operating
Companies that were formed after the
breakup of AT&T in 1984. Examples
include: US West, Bell South, Bell Atlantic,
and SBC.
Router A device with routing intelligence
that connects local and remote networks
together.
SLIC (Subscriber Line Interface Card)
An interface card that connects a telephone
network to a piece of equipment (phone,
fax, modem, etc).
www.littelfuse.com
47
Contents
Chart
Overvoltage / Suppression Protection
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Transient Voltage Suppression
SP72X Series SCR/Diode Arrays
Glossary
The SP72X family of diode arrays are
Features
designed to withstand extreme ESD
•
Wide selection of array sizes
conditions and provide multiple lines
•
High energy rating
of transient voltage suppression (TVS)
•
Low profile surface mount packages
protection. The SP series protects data,
•
Low capacitance and leakage
signal and control lines by diverting transients away from sensitive components.
The SP720 has two protection SCR/diode
structures per input and a total of 14
available inputs can be used to protect
up to 14 external signal or bus lines.
Specifications
Capacitance:
3.0 to 5.0 pf; 1 to 2 pf measured
Leakage Current:
1.0 to 2.0 nA @ 25°C
Operating Voltage:
1.0 to 30 VDC
The SP721 and SP723 have two
protection SCR/diode structures per
CLEC (Competitive Local
Exchange Carrier) A competitor to
local telephone companies that has been
granted permission to offer local telephone
service. CLECs compete with independent
and Bell telephone companies.
PBX (Private Branch Exchange)
A private telephone switching system,
usually located on a customer’s premises,
that provides intra-premises exchange
telephone service, as well as access to
the public exchange network and/or
private facilities.
Surgector A device intended to
suppress lightning and other transients.
(Also known as thyristors)
CO (Central Office) The location
that contains equipment to route calls
to and from customers. It also connects
customers to Internet Service Providers
and long distance carriers.
POP (Point of Presence) The point
where a long distance company’s equipment
is connected to the local telephone
company’s central office.
Transient A short duration spike
in voltage.
CPE (Customer Premise
Equipment) Telephone systems, modems
and terminals installed at
customer sites.
POTS (Plain Old Telephone Service)
Analog telephone lines connected to most
residential and small business users from
their nearest local telephone company.
ESD (Electrostatic Discharge)
The rapid transfer of electrostatic charge
between objects.
PSTN (Public Switched
Telephone Network)
The network of transmission and
switching systems, signaling processors,
and associated operations support
systems (OSS) that is shared by the public.
Sometimes referred to as PTN, PSN, PN
(Public Telephone Network, Public
Switched Network, Public Network.)
that can be used to protect up to six
external signal or bus lines.
ESD Suppressors Protective devices
connected in parallel to the load that shunt
damaging voltages to ground.
The SP724 is comprised of bipolar
SCR/diode structures to protect up to
four independent lines by clamping
ILEC (Incumbent Local Exchange
Carrier) Bell and independent telephone
companies, established before the
Telecommunications act of 1996, that
sell local telephone service.
transients of either polarity to the power
supply rails. The SP724 offers very low
leakage and low input capacitance.
Specifications
IEC 1000-4-2
EIAJ
IC121
HBM Direct
HBM
Discharge
Direct Two Parallel
HBM Air Discharge
Inputs
Machine
Model
MIL-STD 3015.7
Part #
Inputs
Package
Styles
Modified
HBM
Standard
HBM
SP720
14
16 Ld
PDIP, SOIC
15kV
6kV
15kV
4kV
8kV
SP721
6
8 Ld
PDIP, SOIC
15kV
6kV
15kV
4kV
8kV
1kV
SP723
6
8 Ld
PDIP, SOIC
15kV
10kV
15kV
8kV
—
2kV
SP724
4
6 Ld
2kV
15kV
8kV
—
2kV
Ordering Information
Refer to Suppression Guide for more information.
46
Consult Littelfuse web site for more information
Wireless Base Station A remote
location next to a cellular tower that
contains communication equipment to
support wireless calls.
ESD rated to IEC 1000-4-2 (level 4)
input and there are a total of six inputs
SOT-23, 6-Pin 8kV (1)
T1 A North American and Japanese
standard for communicating at
1.54 million bits per second.
www.littelfuse.com
1kV
IXC (Interexchange Carrier)
Carriers that provide long distance service
between CLECs.
LEC (Local Exchange Carrier)
Any company authorized by the state
public utility commission to sell local
telephone service.
MOV (Metal Oxide Varistor)
A component that is used to protect circuits
by suppressing or diverting transients.
MTSO (Mobile Telephone
Switching Office) This location
contains all the equipment required for
mobile wireless communications.
PTC Device (Positive Temperature
Coefficient) A protective device with
electrical characteristics that change with
the device’s temperature. PTC protective
devices temporarily limit current by
dramatically increasing in resistance
when subjected to overcurrents.
RBOC (Regional Bell Operating
Company) Regional Bell Operating
Companies that were formed after the
breakup of AT&T in 1984. Examples
include: US West, Bell South, Bell Atlantic,
and SBC.
Router A device with routing intelligence
that connects local and remote networks
together.
SLIC (Subscriber Line Interface Card)
An interface card that connects a telephone
network to a piece of equipment (phone,
fax, modem, etc).
www.littelfuse.com
47
Contents
Glossary
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Overcurrent
Telecom
CIRCUI T
Overvoltage
P R OT E C T IO N
Selection Chart
ESD
Application
Protection
Littelfuse Product
Page
Central Office Power Panels
Provides protection of DC power
supplies used to power telephone
networks. Must meet Bellcore
GR-1089-CORE specifications.
Tele-GARD Fuse (L17T Series)
Tele-GARD Fuse (TLN Series)
Tele-GARD Fuse (TLS Series)
Alarm Indication Fuse (481 Series)
Alarm Fuseholder (482 Series)
Metal-Oxide Varistors
(LA, HA, Ultramov Series)
10
13
14
18
19
42, 45
Network Modems
Analog, xDSL, ISDN, T1
Must meet UL 1950 3rd Edition/UL
1459 and FCC 46 Part 68 specifications.
SMTelecom® Fuse (436 Series)
2AG Slo-Blo® Fuse (230 Series)
Surgector™ (SGT Series)
22
29
40
Desktop/PC-card Modems
Must meet UL 1950 3rd Edition and
FCC 47 Part 68 specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
NANO2® Slo-Blo Fuse (452 Series)
1206 SMF Slo-Blo (430 Series)
Surgector (SGT Series)
22
29
23
27
40
Fax Machines/Business Machines
Must meet UL 1950 3rd Edition/UL
1459 and FCC 47 Part 68 specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
Surgector (SGT Series)
PulseGuard® ESD Suppressor
(PGB Series)
Multi-layer Varistors (MLE, MLN Series)
22
29
40
38
39
Desktop Telephones
Must meet UL 1950 3rd Edition/UL
1459 and FCC 47 Part 68 specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
Surgector (SGT Series)
22
29
40
Answering Machines
Must meet UL 1950 3rd Edition/UL
1459 and FCC 47 Part 68 specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
Surgector (SGT Series)
22
29
40
Line Cards and PBXs
Must meet UL 1950 3rd Edition/UL
1459, FCC 47 Part 68 and Bellcore
GR-1089-CORE specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
Surgector (SGT Series)
22
29
40
Cellular Phones and
Wireless Modems
Used for filtering and protection against
electro-static discharge (ESD).
PulseGuard ESD Suppressor
(PGB Series)
Multi-layer Varistors (MLE, MLN Series)
38
Used for overcurrent protection of
displays and batteries.
1812L PTC (1812 Series)
1206 SMF Fuse (429 Series)
1206 SMF Slo-Blo (430 Series)
0603 SMF Fuse (431 Series)
34
27
27
26
Telecom side must meet UL 1950 3rd
Edition/UL 1458 and Bellcore GR-1089CORE specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
Surgector (SGT Series)
22
29
40
The data side is traditionally ethernet.
PulseGuard ESD Suppressor
(PGB Series)
38
Telecom/Internet Gateways
48
™
www.littelfuse.com
39
Te l e c o m m u n i c a t i o n s P r o d u c t C a t a l o g
Overcurrent
Telecom
CIRCUI T
Overvoltage
P R OT E C T IO N
Selection Chart
ESD
Application
Protection
Littelfuse Product
Page
Central Office Power Panels
Provides protection of DC power
supplies used to power telephone
networks. Must meet Bellcore
GR-1089-CORE specifications.
Tele-GARD Fuse (L17T Series)
Tele-GARD Fuse (TLN Series)
Tele-GARD Fuse (TLS Series)
Alarm Indication Fuse (481 Series)
Alarm Fuseholder (482 Series)
Metal-Oxide Varistors
(LA, HA, Ultramov Series)
10
13
14
18
19
42, 45
Network Modems
Analog, xDSL, ISDN, T1
Must meet UL 1950 3rd Edition/UL
1459 and FCC 46 Part 68 specifications.
SMTelecom® Fuse (436 Series)
2AG Slo-Blo® Fuse (230 Series)
Surgector™ (SGT Series)
22
29
40
Desktop/PC-card Modems
Must meet UL 1950 3rd Edition and
FCC 47 Part 68 specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
NANO2® Slo-Blo Fuse (452 Series)
1206 SMF Slo-Blo (430 Series)
Surgector (SGT Series)
22
29
23
27
40
Fax Machines/Business Machines
Must meet UL 1950 3rd Edition/UL
1459 and FCC 47 Part 68 specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
Surgector (SGT Series)
PulseGuard® ESD Suppressor
(PGB Series)
Multi-layer Varistors (MLE, MLN Series)
22
29
40
38
39
Desktop Telephones
Must meet UL 1950 3rd Edition/UL
1459 and FCC 47 Part 68 specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
Surgector (SGT Series)
22
29
40
Answering Machines
Must meet UL 1950 3rd Edition/UL
1459 and FCC 47 Part 68 specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
Surgector (SGT Series)
22
29
40
Line Cards and PBXs
Must meet UL 1950 3rd Edition/UL
1459, FCC 47 Part 68 and Bellcore
GR-1089-CORE specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
Surgector (SGT Series)
22
29
40
Cellular Phones and
Wireless Modems
Used for filtering and protection against
electro-static discharge (ESD).
PulseGuard ESD Suppressor
(PGB Series)
Multi-layer Varistors (MLE, MLN Series)
38
Used for overcurrent protection of
displays and batteries.
1812L PTC (1812 Series)
1206 SMF Fuse (429 Series)
1206 SMF Slo-Blo (430 Series)
0603 SMF Fuse (431 Series)
34
27
27
26
Telecom side must meet UL 1950 3rd
Edition/UL 1458 and Bellcore GR-1089CORE specifications.
SMTelecom Fuse (436 Series)
2AG Slo-Blo Fuse (230 Series)
Surgector (SGT Series)
22
29
40
The data side is traditionally ethernet.
PulseGuard ESD Suppressor
(PGB Series)
38
Telecom/Internet Gateways
48
™
www.littelfuse.com
39
LITTELFUSE OFFERS A COMPLETE LINE OF
OV E R C U R R E N T & OV E RVO LTAG E
S UPPRESSION PRODUCTS
TO
PROTECT
SENSITIVE
T E L E C O M M U N I C AT I O N S
E Q U I P M E N T.
P
R
O
D
U
C
T
C
A
T
A
L
O
G
Telecom
CIRCUI T
P R OT E C T IO N
International Sales, Distribution
and Engineering Facilities:
•
Utrecht, The Netherlands
Phone: (+31) 30-299-9900
Fax:
(+31) 30-299-9800
•
Washington, England
Phone: (+44) 191-415-8181
Fax:
(+44) 191-415-8189
•
Singapore
Phone: (+65) 746-9666
Fax:
(+65) 742-8178
•
Hong Kong, China
Phone: (+85) 22-810-5099
Fax:
(+85) 22-810-5500
•
Seoul, Korea
Phone: (+82) 2-463-6073
Fax:
(+82) 2-463-3273
•
Yokohama, Japan
Phone: (+81) 45-478-1088
Fax:
(+81) 45-478-1089
www.littelfuse.co.jp
~ Paulo, Brazil
Sao
•
Phone: (+55) 39-77-0909
Fax:
(+55) 39-76-6690
•
Piedras Negras, Mexico
Phone: (+52) 8-782-5330
Fax:
(+52) 8-782-3398
P
R
O
D
U
C
T
C
A
T
A
O
800 E. Northwest Highway
Des Plaines, IL 60016
(847) 824-1188 • FAX (847) 824-3024
Technical Assistance: (800) 999-9445
www.littelfuse.com
L
G
Littelfuse, Inc.
FORM NO. PF105
Printed in U.S.A.• May 2001
© 2001, Littelfuse Corporation
Research and Manufacturing Facilities:
•
•
•
•
•
•
•
•
•
Des Plaines, Illinois USA
Arcola, Illinois USA
Centralia, Illinois USA
Piedras Negras, Mexico
Grenchen, Switzerland
Washington, England
Seoul, Korea
Suzhou, China
Malvar, Philippines
Represented By:
Distributed By:
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