Circuit Protection Technology Application Matrix

Circuit Protection Technology Application Matrix
Circuit Protection Technology
Application Matrix
Littelfuse is recognized around the world as the #1 brand in circuit protection.
With the industry’s broadest and deepest portfolio of circuit protection technologies backed by unparalleled design support,
Littelfuse is the company that engineers trust to answer their most critical circuit protection questions.
Overcurrent Protection Devices
Overvoltage Suppression Devices
Fuses
TVS Diodes
PulseGuard® ESD Suppressors
SIDACtor® Devices
Switching Thyristors
Littelfuse is the world leader in the design and manufacturing
of fuses for the automotive, industrial, handheld, computer and
telecom markets. Whether you’re looking for surface mount or
axial; glass or ceramic; thinfilm or Nano2® style; fast-acting
or Slo-Blo® fuses; Littelfuse has the part to meet your need.
Operating characteristics of our electronics application fuses
include current ranges from .010A–40A, maximum voltage ranges
from 24V–600V, and interrupting ratings from 24A–50,000A. Our
comprehensive line of lead-free and RoHS devices, are perfect for
your environmentally friendly design. Enable easy fuse installation
and replacement with our comprehensive line of fuse blocks,fuse
holders, and fuse accessories for automotive, electronic, and
industrial applications.
TVS Diodes are used to protect semiconductor
components from high-voltage transients. Their
p-n junctions have a larger cross-sectional area
than those of a normal diode, allowing them
to conduct large currents to ground without
sustaining damage. Littelfuse supplies TVS
Diodes with peak power ratings from 200W
to 30kW, and reverse standoff voltages from
5V to 512V.
With a capacitance value as low as 0.04 pF, PulseGuard suppressors
can protect high-speed digital I/O lines (HDMI, USB, eSata, Ethernet)
without causing signal distortion. Since today’s fastest data buses
are operating at speeds in excess of 5 Gbps, it is necessary that
protection devices do not present a capacitive load to the bus
in order to ensure signal integrity. With respect to ESD testing,
PulseGuard suppressors are specified to protect against ESD
transients per the IEC 61000-4-2 (Level 4) test method. Available
in small surface mount form factors, they are lead-free and
RoHS compliant.
SIDACtor ® devices are designed to suppress
overvoltage transients in telecom and datacom
equipment, and are able to divert currents as
high as 5000A to ground within nanoseconds
of reaching their breakover voltage. Littelfuse
offers a wide range of configurations including
DO-214AA, DO214AC, COMPAK (3-Pin DO-214),
SOT23-5, QFN, MS-012 and modified MS-013
surface mount, TO-92, TO-218, DO-15, modified
TO-220, and TO-220 through-hole package
options designed to handle medium to high
energy transients.
Switching Thyristors are solid state switches that are
normally open circuits (very high impedance), capable
of withstanding rated blocking/off-state voltage until
triggered to on state. Used for circuit control applications,
Littelfuse offers TRIAC, QUADRAC, SCRs, Rectifiers
plus Alternistor Triacs for best commutating and noise
immunity. Offered in various and other configurations
for a wide range of currents blocking/off-state voltages,
packages, and triggering.
Resettable PTCs
TVS Diode Arrays
(SPA® Devices)
Varistors
Gas Discharge Tubes (GDTs)
MOVs – Littelfuse Metal Oxide Varistors (MOVs) are designed to
suppress transient voltages such as lightning and other high level
transients found in industrial, AC line application or lower level
transients found in automotive DC line applications. With peak
current ratings ranging from 40A to 70,000A and peak energy from
0.1J to 10,000J, Littelfuse varistors are available in radial leaded,
axial leaded, surface mount and bare-disk options.
Available in small foot print leaded, surface
mount and cartridge configurations, Littelfuse
GDTs offer fast response time to transient
overvoltage events. This fast response time
translates into a reduced risk of equipment
damage. Littelfuse GDTs have the ability to
handle very high current surges – up to 40,000A
– while effectively suppressing overvoltage
transients. Their low capacitance (typically
1–2pF), high insulation resistance (greater
than 1GW) and low leakage ensure virtually no
effect on the protected system during normal
(non-surge) operating conditions. Their electrical
characteristics make them ideal for use in
broadband cable, MDF (Main Distribution Frame),
and central office applications.
PLED Light-Emitting Diode (LED)
Protectors
Littelfuse offers a full range of surface mount, radial leaded
and axial leaded (battery strap) PTC resettable overcurrent
suppression devices. Surface mount PTCs are available with
broad range of hold current from 0.05A to 7.0A while footprint
various from 0402 to 2920. Radial PTCs are rated from 6VDC
to 600VDC respectively, and are designed for use in higher
voltage applications that require minimal maintenance and are
subject to repetitive overcurrent conditions. Axial PTCs are rated
from 6VDC to 30VDC, and are designed for use in battery pack
applications that require thermal protection against overcurrent
fault conditions. All Littelfuse PTC devices are recognized under
the Components Program of Underwriters Laboratory for both the
US and Canada as well as being certified by TUV. All devices are
lead-free and RoHS compliant.
Littelfuse.com
TVS Diode Arrays are designed to protect
analog and digital signal lines from electrostatic
discharge (ESD), Electrical Fast Transients (EFT),
and lightning-induced surge currents. Offering
low dynamic resistance for improved clamping
performance, TVS Diode Arrays are offered
in a wide range of industry standard discrete
and multi-channel SMD packages. Features of
this portfolio include capacitance as low as 0.4
pF and enhanced ESD capability up to ±30kV
(contact discharge).
MLVs – Littelfuse Multilayer Varistors (MLVs) are designed for
applications requiring protection from low to medium energy
transients in the computer, handheld device, industrial and
automotive markets. Available in miniature surface mount options as
small as 0201 size, Littelfuse MLVs offer a low voltage range (5.5–
135VDC) and enhanced performance and filtering characteristics in a
small package. Peak current ratings range from 4A to 500A and peak
energy 0.02J–2.5J.
PLED Light-Emitting Diode (LED) Protectors Littelfuse PLED
devices provide added reliability to LED lighting strings.
Designed to minimize the impact of losing an entire LED
string due to a single LED failure, PLED devices provide
a switching function that will bypass LEDs that go open
circuit, and allow current to flow to the remaining LEDs in
the string. PLED devices also offer LED protection against
electrostatic discharge (ESD) and accidental reverse
power connection (PLED5 devices only). Designed to
serve the needs of high brightness outdoor LED lighting
applications (advertising and traffic signs, roadway/
pathway/runway lighting, aircraft and emergency lighting,
etc), PLED devices help assure reliability and lower
maintenance costs.
Revised 04/03/13
Circuit Protection Technology
Application Matrix
Maket Segment
CONSUMER
ELECTRONICS
POWER SUPPLY
COMMERCIAL
SYSTEMS
LIGHTING
INDUSTRIAL &
INSTRUMENTATION
MEDICAL
COMMUNICATIONS
COMPUTER
AUTOMOTIVE
ELECTRONICS
Littelfuse.com
LCD TV
Refrigerator
Room AC
Washing Machine
Instant Water Heater
Gas Igniter
Bluetooth Headset
Cell Phone
E-Book
PMP (Portable Media Player)
Small Appliance
DVD
Telecom Power
Adapter / Charger
Industrial Power
UPS
SMPS
Li-Ion Battery PackA
DVR (Digital Video Recorder)
IP Camera
Detector
POS
Solar Power System
Electronic Ballast
Dimmer
LED Lighting
HID Lighting
GFCI/AFCI
Smart Power Meter
Power Tools
Elevator
Sewing Machine
Portable Medical Device
Medical Diag./Anal. Devices
SLIC Line Card
Ethernet Router
DSL Modem Router
Phone / FAX / 56K Modem
Set Top Box
T1/T3 Line Driver
Central Office/CPE Splitter
Desktop / Notebook
Server
Fuses
Resettable PTCs
Varistors
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GDTs
TVS Diode
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TVS Diode Arrays
([email protected] Devices)
PulseGuard® ESD
Suppressors
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SIDACtor ® Devices
PLED LED
Protectors
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Thyristors
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