Littelfuse Product Selection Guide
CIRCUIT
PROTECTION
SOLUTIONS
Electronics Circuit Protection
Product Selection Guide
A guide to selecting Littelfuse circuit protection
components for electronic applications.
Broadest and Deepest
Portfolio of Product
Backed by Unparalleled
Circuit Protection
Expertise
About this guide
This guide provides a summary of key circuit protection consideration factors, descriptions
of the technologies Littelfuse offers, and product selection tables. It is designed to help you
quickly find a protection solution appropriate to your application.
Topic
Littelfuse Circuit Protection Technologies
Page
2–3
Overcurrent Protection Technologies
Fuses
4–5
Fuseholders
6
Positive Temperature Coefficient Devices (PTCs)
7
Overvoltage Suppression Protection
Varistors (MOVs, MLVs)
8
Gas Discharge Tubes (GDTs)
9
PulseGuard ESD Supressors
®
TVS Diodes
TVS Diode Array
SPA® Diodes
PLED Light-Emitting Diode (LED) Protectors
9
10–11
12
13
SIDACtor® Protection Thyristors
14–15
Switching Thyristors
16–17
Common Circuit Threats and Protection Solutions
18–19
Application Solutions by Circuit Type and Related Threat
20–23
©2015 Littelfuse, Inc.
Specifications descriptions and illustrative material in this literature are as accurate as known at the time of publication,
but are subject to changes without notice. Visit littelfuse.com for more information.
WHY CHOOSE CIRCUIT PROTECTION
Circuit protection devices interrupt overcurrent events and divert
overvoltage transients. They increase safety and enable end
products to survive harsh electrical conditions.
Most electrical and electronic equipment require circuit protection
devices. In many cases they must be installed to comply with safety
and performance standards before the end products can be sold
or used.
Beyond this, strategically-selected protection devices will:
• Improve end-product uptime, sustainability and reliability
• Assure low warranty return, repair and replacement costs
• Minimize fire and shock risks and larger damage potential
• Minimize operating dangers and potential liabilities
WHY CHOOSE LITTELFUSE
Littelfuse is the global leader in circuit protection solutions.
We are the only company to offer all of the pertinent circuit
protection technologies, with products that can be used in
virtually everything that uses electrical energy.
Complementing our wide portfolio of circuit protection products
is a global network of design and technical support expertise.
We offer decades of design experience to help you address
application challenges and achieve regulatory compliance.
Your Single Source
Littelfuse offers an extensive circuit protection product line.
We design forward-thinking, application-specific solutions to
provide assurance that your most demanding requirements will
be met. Our goal is to provide the most complete range of options
so that you will not have to make compromises.
Testing Support
Littelfuse can help assure that your products will withstand most
common threats repeatedly and will fail safely under extreme
circumstances. We can serve as an independent source to provide
assistance as you design by offering lab testing capabilities for
customer applications. This testing includes industry specific
required power fault and ESD/EFT/lightning surge conditions.
Application Knowledge
For over 85 years, Littelfuse has maintained a focus on circuit protection,
and we will continue to adapt as technologies evolve. Engineers and
circuit designers around the world have come to rely on Littelfuse
products and application knowledge to support their designs.
Global Support
Littelfuse products, application knowledge and technical support are
available around the globe. We offer a network of regional customer
support offices and hundreds of independent authorized distributor
contacts to assist you. Visit www.littelfuse.com/contact-us to find local
support near you.
Standards Compliance Expertise
Most Littelfuse products comply with a wide range of applicable industry
and government guidelines, as well as our own rigorous quality and
reliability criteria. We continually look forward and adapt to changing
requirements, so that our products will comply with industry specific,
national and international standards such as CCC, CSA, IEC, IEEE, ISO,
ITU, Meti, RoHs, Telcordia, TIA and many more.
For Further guidance
Littelfuse product representatives will work with you to find circuit
protection technologies that will meet your requirements.
To address your requirements or questions in detail, please contact
a representative near you (Littelfuse.com/contact-us). For reference diagrams, technical articles, and other application
guidance materials to assist in your design processes, please visit
Littelfuse.com/designsupport
For detailed selection of Littelfuse circuit protection technologies
and their common applications, please visit Littelfuse.com/products
For a library of detailed application guides, please visit
Littelfuse.com/technical-resources/application-designs
To download the most current edition of this brochure and our product
catalogs, please visit Littelfuse.com/catalogs
littelfuse.com
Littelfuse
Circuit Protection
Technologies
Technology
Key Features
and Protection
Characteristics
When / Where
Typically Used
Surge Energy
Rating Range
Typical Voltage
Clamping
Speeds
Typical
Capacitance/
Insertion Loss
Mounting/
Size/Packaging
Options
Overcurrent Protection Technologies:
Fuses
Completely stop current flow,
which helps to identify faults;
Wide range of options
Ultimate protection for sensitive/
expensive/critical components
Low thru Very High
Not applicable
Series impedance
measured in nH
Very Extensive Range
of Options
PTCs
Resettable; No device
replacement after most
common overcurrent events
Where overcurrent events may
occur often, and continuous uptime
desired
Low thru High
Not applicable
Series resistance
measured in ohms
Surface Mount, Radial
Leaded, Axial Strap
Overvoltage Suppression Technologies:
Multi-Layer
Varistors (MLVs)
Compact and capable of handling
significant surges for their size
ESD and EFT suppression in
smaller and portable electronics
Low thru Medium
Moderate
High
Miniature
Surface Mount
Metal-Oxide
Varistor (MOVs)
Capable of withstanding very
high energy transients;
Wide range of options
Appliance, industrial and very high
energy suppression applications
Medium thru
Very High
Moderate
High
Radial Leaded,
Industrial Terminal
GDTs
Switches that turn to on state and
shunt overvoltage to ground using a
contained inert gas as an insulator
Protection of
telecom equipment
from lightning surges
Medium thru High
Fast
Low
Surface Mount, Axial
Leaded,
2/3 Lead Radial
PulseGuard®
ESD Suppressors
Extremely low capacitance;
Fast response time;
Compact size
ESD suppression;
Ultra fast reaction;
Low signal distortion
Low
Moderate
Low
Miniature
Surface Mount
PLED LED
Protectors
Shunt function bypasses open
LEDs; ESD and reverse power
protection
High brightness outdoor
LED lighting applications
Low
Very Fast
Medium
Miniature
Surface Mount
TVS Diode Array
SPA® Diodes
Low capacitance /
low clamping voltage;
Compact size
ESD suppression; Low distortion;
Ideal for I/O interfaces and digital &
analog signal lines
Low thru Medium
Very Fast
Low
Extensive range of
surface mount options
TVS Diodes
Fast response to
fast transients;
Wide range of options
Semiconductor protection;
telecom I/O interfaces, electronics,
industrial equipment
Medium thru High
Fast
High
Axial Leaded, Radial
Leaded, Surface Mount
SIDACtor®
Protection
Thyristors
Specifically designed to
serve stringent telecom/
networking standards
Telecom / Datacom and
networking applications
Medium thru High
Very Fast
Low
Extensive range of
surface mount and
thru-hole options
Home appliances, power tools,
outdoor equipment
Not applicable
Not applicable
Not applicable
Extensive range of
surface mount and
thru-hole options
Switching Technologies:
Power Thyristors
Solid state switches that switch
to low “on” state and control the
flow of current
1. Fuses and Holders —
Fuses– Full range including
surface mount, axial, glass or
ceramic, thin-film or Nano2®
style, fast-acting or Slo-Blo®
fuse.
Clips– Used in applications
that require a fuse to be
easily mounted to a PCB, but
real-estate is scarce. Clips
are also ideal for high-current
applications, allowing for
better heat management of
the fuse. They are the most
economical solution.
Blocks– An alternative solution
to Clips but with easier
placement on the PC board
during manufacturing. In some
instances, Blocks may provide
insulation to the side ears of
the clips. In addition to being
through-hole, Blocks can also
be screwed or riveted in place.
Holders– The ideal solutions for
those applications that require
the cartridge fuse to be
protected, providing a shocksafe environment. Panel-
mount holders allow for easy
replacement of the fuse from
outside of the appliance,
perfect for applications that
require replacing the fuse
without opening the appliance
enclosure. (Pages 4-6).
2. Positive Temperature
Coefficient Devices (PTCs) —
Provide resettable overcurrent
protection for a wide range of
applications (Page 7).
3. Varistors — Multiple forms,
from Metal Oxide Varistors
(MOVs) and Thermally Protected
MOV (TMOV® varistors) that
suppress lightning transient
voltages to Multi-Layer Varistors
(MLVs) designed for applications
requiring protection from various
ESD/EFT transients in computers
and handheld devices as well
as industrial and automotive
applications (Page 8).
4. Gas Discharge Tubes
(GDTs) — Available in small
footprint leaded and surface
mount configurations, Littelfuse
GDTs respond fast to transient
overvoltage events, reducing
the risk of equipment damage
(Page 9).
5. PulseGuard® ESD
Suppressors — Available in
various surface mount form
factors to protect high-speed
digital lines without causing
signal distortion (Page 9).
6. TVS Diodes — Suppress
overvoltage transients such as
Electrical Fast Transients (EFT),
inductive load switching and
lightning in a wide variety of
applications in the computer,
industrial, telecom and
automotive markets (Pages 10–11).
7. TVS Diode Array –
SPA® Diodes —Designed
specifically to protect analog
and digital signal lines
from electrostatic discharge
(ESD) and other overvoltage
transients such as EFT and
Lightning (Page 12).
8. PLED Bypass Protectors — Specialty silicon devices that
enable LED lighting strings
to continue to function if any
single LED fails as an open
circuit, and also offer ESD and
reverse power protection
(Page 13).
9. SIDACtor® Protection
Thyristors — Complete line of
protection thyristor products
specifically designed to
suppress overvoltage transients
in a broad range of telecom and
datacom applications (Pages 14–15).
10. Switching Thyristors —
Solid-state switches used to
control the flow of electrical
current in applications, capable
of withstanding rated blocking/
off-state voltage until triggered
to the on-state (Pages 16–17).
1
4
7
9
2
5
8
10
3
6
littelfuse.com
Product
Specifications and
Selection Guide
Overcurrent Protection Technologies
FUSE PRODUCTS
Fuses provide protection by completely stopping the flow of energy to sensitive circuits. If current exceeds the fuse’s operating range, the metal
wire or strip melts safely within an enclosure. Littelfuse offers the most extensive range of fuses available, and for easy replacement of cartridge
fuses Littelfuse offers a wide selection of fuseholders including panel mount, in-line, and surface and thru-hole circuit board mount devices.
See page 6 for fuseholder selection.
RoHS Compliant
Lead Free
125 / 63 / 32
50
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0.25 - 6
32 / 24
50
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440
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1206
•
1.75 - 8
32
50
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441
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0603
•
2-6
32
50
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•
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469
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1206
1-8
24 / 32
24 - 63
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501
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1206
10, 12, 15, 20
32
150
•
•
•
•
•
•
UL
UMF
0.25 - 8
•
PSE
•
0603
CSA
1206
•
Operating
Temperature
Range
UR
•
•
Very Fast Acting
•
Size2
Fast Acting
437
438
Series
Name1
Time Lag
Halogen Free
Agency
Approvals 3
Order Samples
Max. Voltage
Rating 3
(Volts)
Interrupting
Rating at
Max. Voltage
Rating 3
(Amps)
View Datasheet
Device Range 3
(Operating
Current Options
in Amps)
Surface Mount:
Ceramic Chip
Thin Film
Nano2® Fuse
Telelink® Fuse
OMNI-BLOK®
Fuseholder
466
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1206
•
0.125 - 5
125 / 63 / 32
50
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•
1206
•
7
24
35
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468
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1206
0.5 - 3
63 / 32
35 - 50
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•
467
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0603
0.25 - 5
32
35 - 50
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494
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0603
0.25 - 5
32
35 - 50
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435
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0402
•
0.25 - 5
32
35
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448
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2410
•
0.062 - 15
125 / 65
35 - 50
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449
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2410
0.375 - 5
125
50
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451 / 453
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0.062 - 15
125 / 65
35 - 50
•
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452 / 454
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0.375 - 12
125 / 72
50
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456
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4012
•
20, 25, 30, 40
125
100
458
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1206
1.0 - 10
75 / 63
50
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443
•
•
4012
0.5 - 5
250
50
•
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•
464
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4818
0.5 - 6.3
250
100
•
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•
465
•
•
4818
•
1 - 6.3
250
100
•
•
•
462
•
•
4118
•
0.500 - 5
350
100
-40°C to +80°C
•
485
•
•
4818
0.500 - 3.15
600
100
-55°C to +125°C
•
461
•
•
4012
0.5 - 2.0
600
60
4012
1.25
600
60
0.062 - 10.0
125
35 - 50
0.375 - 5
125
50
0.062 - 10
125
35 - 50
0.375 - 5
125
50
0.5 - 2
600
60
0.5 - 5
250
50
0.062 - 5
125
50 - 300
0.5 - 5
125
50
0.062 - 5
250
50
0.25 - 5
250
50
•
2.0 - 10.0
350
100
•
2.0 - 10.0
350
100
2410
461E
154
•
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154T
157T
159
•
Flat Pak
EBF
•
•
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•
2410
•
160
PICO® SMF
Fuse
•
429
157
Fuse and Clip
Assemblies
•
-55°C to +150°C
459
•
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460
•
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202
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203
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446
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447
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*
*
*
*
*
*
*
*
*
*
*
*
•
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•
•
•
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•
-55°C to +90°C
•
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-40°C to +125°C
(1) Detailed information about most product series listed here can be found on our web site.
(2) Size for these surface mount items refers to common industry length and width dimensions of the device surface area. Example: 0402 = .04” x .02”
(3) In some cases for these categories the ratings, agency approvals and specifications vary by part number and are presented here as ranges representing the whole series.
Please refer to product data on www.littelfuse.com and in our data sheets for detailed information by part number.
* Please refer to data sheet for detailed specifications.
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Lead Free
RoHS Compliant
CQC
CCC
K
10,000
PSE
1000
Semko
0.315 - 1
Asia
BSI
300DC / 50AC
300DC / 50AC
300DC / 50AC
50
50
50
50
300DC / 50AC
50
50
35 - 50
35 - 63
100
100
35 - 100
35
35 - 500
35 - 400
35 - 150
35 - 100
35 - 63
150
750 - 1500
400 / 1500
300 / 10,000
35 - 10,000
10,000
100 - 200
35 - 10,000
400 - 1500
100 - 1500
200 / 100
35 - 300
35 - 300
35 - 1000
200 - 1000
100 / 200
100 - 600
20,000 - 50,000
10,000
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TUV
125
125
32
250
125
125
125
125
250
250
250
250
350
350
250 / 300 / 350
250
250 / 125
250 / 125
250
250
250
250
250
250
250 / 125
250 / 125
125
250
250 / 125
250
400DC / 500AC
450DC / 500AC
250 / 32
250 / 125 / 32
250
65
250
250
450 / 500
600DC
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VDE
0.062 - 15
0.062 - 15
20 - 30
0.062 - 5
0.5 - 5
0.5 - 5
0.375 - 7
0.062 - 15
0.1 - 10
0.1 - 10
0.125 - 5
2 - 6.3
0.125 - 10
0.25 - 7
0.3 - 7
0.25 - 2.5
0.375 - 10
0.25 - 7
0.032 - 15
0.032 - 16
0.2 - 6.3
0.04 - 6.3
0.05 - 16
0.125 - 20
1 - 10
0.1 - 7
1 - 10
1 - 10
0.08 - 7
0.125 - 20
0.5 - 16
0.5 - 16
0.062 - 35
0.01 - 30
0.375 - 40
12 - 30
1- 10
0.01 - 30
10 - 30
15 - 20
-55°C to +125°C
-55°C to +125°C
-55°C to +125°C
-55°C to +85°C
-55°C to +85°C
-55°C to +70°C •
CE
10,000
10,000
10,000
10,000
10,000
50
35 - 50
35 - 50
50
50
100
50 - 100
50
50
50
25 - 63
100
100
50
50
50
130
150
100
100
Europe
UMF
125
125
125
125
125
125
250
250
250
250
250
300
300
125
65
250
125
125
125
65
65
250
250
250
300
Americas
QPL
0.002 - 5
0.002 - 5
0.002 - 5
0.002 - 5
0.002 - 5
0.5 - 5
0.4 - 6.3
0.4 - 6.3
0.5 - 10
0.5 - 10
1 - 10
1 - 10
1 - 6.3
0.35 - 1.5
0.125 - 4
0.8 - 6.3
0.05 - 6.3
0.05 - 6.3
0.35 - 1.5
0.125 - 4
0.125 - 4
0.5 - 6.3
0.8 - 6.3
2-5
0.8 - 6.3
Agency Approvals 3
Operating
Temperature
Range
CSA
Interrupting
Rating at
Max Voltage
Rating 3
(Amps)
UR
Max. Voltage
Rating 3
(Volts)
UL
Very Fast Acting
Fast Acting
Medium Acting
Time Lag
Order Samples
View Datasheet
Series
Name1
Device
Range 3
(Operating
Current
Options in
Amps)
Radial Leaded / Socket:
Micro
Fuse /
TR3 Fuse
™
TR5®
Fuse
TE5
TE7
262/268
269
272/278
273/279
274
303
370
372
373
374
382
383
369
385
391
392
395
396
397
398
399
400
804
808
807
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-40°C to +85°C
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-40°C to +85°C
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-40°C to +125°C
-40°C to +85°C
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-40°C to +125°C • • •
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Axial Leaded / Cartridge:
PICO®
Fuse /
PICO® II
Fuse Axial
3.6x10 mm
4.5x14.5
mm
(2AG)
5x20
mm
6.3x32 mm
(3AG/3AB)
251
253
275
263
471
472
473
265/266/267
874
875
876
877
208
209
220
2205
224/225
229/230
217
218
213
219XA
216
215
232
235
233
234
239
285
477
977
312/318
313/315
314/324
322
332
325/326
505
506
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1000VAC / DC
High Voltage
Fuse
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-55°C to +125°C • • •
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-55°C to +125°C
-55°C to +125°C
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•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
• •
• •
•
•
• •
• •
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
littelfuse.com
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Overcurrent Protection Technologies (continued)
FuseHolder Selection Guide
Wire
Wire Connector Terminals
Fuseholder Type
In- Line
Fuseholders
Panel Mount
Fuse Enclosures
3452 series Int. Shocksafe
CT
254 011 - 008
TH
150274
150300
150307
150308
345 series Int. Shocksafe ( old )
TH
254 101, 254 121
SM
111505
245001 Solder QC
TH
254 131
TH
111506
245002 Nema QC
QC
254 201 - 208
4.5x14.5
mm
(2AG)
TH= Thru-Hole SM= Surface Mount CT= Wire Connector Terminal QC= Quick Connect
Circuit Board Mount
Fuse Enclosures
Fuse Blocks
208 / 209
225 / 229
286377 Fip Top
5x20
mm
213 / 215
216 / 217
218 / 219XA
232 / 233
234 / 235
239 / 285
377 / 477
617 / 618
150274
150300
150307
150308
150315
150316
150317
150318
150319
PTF0080M
FH503
345121 Shocksafe
TH
354252
TH
100 / 111 Series
TH
4450718 / 595 / 596
TH
445073
TH
04450001 / 00300210
286677 Flip Top
TH
598 / 652
TH
520 002, 520 101
TH
5200001
800 / 801 / 802 / 821 Series
TH
810 / 811 / 813 / 814
QC
520 003, 520 005
TH
52000001009
823 Series Snap-in
TH
830 / 831 / 834
CT
520 004
TH
52100001009
824 / 824 - 20 / 850 / 851 / 860 series TH
852 / 853 / 862
TH
646 / 649 / 656
TH
51900001009
870 Series Medical Grade
TH
PTF045 / PTF050
820/ 820-20 Series Mini Shocksafe
601
445
PTF030 / PTF035 / PTF040
CT
647
TH
51800001009
SM
658
TH
523 Series
TH
445 Series
TH
NY61AP
CT
PTF010 / PTF020
TH
PTF015 / PTF065
TH
OCT136
TH
PTF075 / PTF077
TH
FC51
TH
PTF078
FB55 / FB58
3453 Series Int. Shocksafe
TH
345101 Shocksafe
CT
354 Series
CT
101001 / 101002
345 Series Int. Shocksafe (old)
TH
810 Series
QC
35406
CT
101003 / 102064
342 Series Traditionalf
TH
811 Series
QC
35408
CT
121001 / 121002
TH
813 Series
QC
35409
CT
121003 / 121004
TH
814 Series
CT
356 Series
TH
102071
TH
862 Series
CT
359 Series
TH
102076 / 102078
344 Series Snap / Panel Mount
348 Series Snap Mount
QC
OMN002
TH
102079 / 102080
340 Series RF Shielded / Watertight
QC
OMN004
TH
122083 / 122087
346877 Flip Top
QC
OMN006
TH
122088 / 122093
342021 (FHN26W) Water Tight
QC
FB65 / FB66
TH
122090 / 100058
342024 (FHN26G2) Drip Proof
TH
51800001009
342025 (FHN20G) Drip Proof
CT
101010
800 Series Shocksafe
TH
102074
TH
10207101009
801 / 802 / 803-01 Series
030201
0CT136
860 Series
TE5 /
TR5® Fuse
Micro™ Fuse
/ TR3
111510
111512
TH
342006 Watertight
155 Series
150322
445
PTF080
LH61A800
FH602 / FH604
TH
TH
345 Shocksafe
FH02A
312
313
314
322
326
332
373
505
506
508
605
111501
3455 Int. Shocksafe
PTF055 / PTF070
6.3x32
mm (3AB/3AG)
Fuse Clips
Fuse Series
Fuse Type
Circuit Connection Method
303 / 369
370 / 372
373 / 374
382 / 383
385 / 392
395 / 396
397 / 398
400 / 662
663 / 664
665 / 804
807 / 808
570 Series
282001 Front mt. Neoprene
TH
281005 Vertical Silver
262 / 268
269 / 272
273 / 274
278 / 279
282007 Front mt. Conductive
TH
281007 Horizontal Silver
282002 Rear mt. Neoprene
TH
281008 Vertical Tin
282008 Rear mt. Conductive
TH
281010 Horizontal Tin
280004 32V indicating
TH
571 0000 000
TH
559 / 560 / 562 Series
SM
564 Series
TH
576 Series
TH
556 / 557
Ptc Products
Agency Approvals
•
0603
(1608)
0.04 - 0.5A
6 - 15 V
40 A
•
•
•
•
•
•
0805L
•
•
0805
(2012)
0.10 - 1.10 A
6 - 15 V
100 / 40 A
•
•
•
•
•
•
1206L
•
•
1206
(3216)
0.10 - 2.0A
6 - 30 V
100 A
•
•
•
•
•
•
1210L
•
•
1210
(3225)
0.05 - 2.0A
6 - 30 V
10 / 100 A
•
•
•
•
•
•
1812L
•
•
1812
(4532)
0.1 - 3.0A
6 - 60 V
10 / 20 / 100 A
•
•
•
•
•
•
2016L
•
•
2016
(5041)
0.30 - 2.00 A
6 - 60 V
20 / 40 A
•
•
•
•
•
•
2920L
•
•
2920
(7351)
0.30 - 3.00 A
6 - 60 V
10 / 40 A
•
•
•
•
•
•
250S
•
•
see data sheet
0.13 A
60 V
3A
•
•
•
•
USBR
•
•
0.75 - 2.50 A
6 / 16 V
40 A
•
•
•
•
•
16R
•
•
2.50 - 14.00 A
16 V
100 A
•
•
•
•
•
30R
•
•
0.90 - 9.00 A
30 V
40 A
•
•
•
•
•
60R
•
•
0.10 - 3.75 A
60 V
40 A
•
•
•
•
•
72R
•
•
0.20 - 3.75 A
72 V
40 A
•
•
•
•
•
250R
•
•
0.08 - 0.18 A
250 V
3 / 10 A
•
•
•
•
•
600R
•
•
0.15 - 0.16 A
600 V
3A
•
•
•
•
•
•
•
1.9 - 3.7 A
6V
50 A
•
•
•
•
•
Lead Free
•
RoHS
0603L
Max Fault
current (IMAX)
Halogen Free
•
Max Voltage
(VMAX)
TUV
•
0402
0603
0805
1206
1812
2920
Hold Current (IHOLD)
UR
Size2
Series Name1
cUR
Order Samples
View Datasheet
PTCs (positive temperature coefficient) increase resistance as temperature increases. They are designed to prevent unsafe
levels of current while allowing constant safe current levels, and their resistance will “reset” automatically when the current and
temperature returns to a safe level. PTCs are typically used in applications where automatic reset is desired.
0.1 - 0.5A
0.5 - 2.0A
0.75 - 3.0A
0.75 - 4.5A
1.9 - 3.7A
7.0A
6 / 12 V
50 A
•
•
•
•
•
•
Operating
Temperature
Range
Surface Mount:
LoRho PTC
(Low Resistance)
-40°C to 85°C
Radial Leaded:
see data sheet
-40°C to 85°C
Battery Strap:
SL
(Low Resistance)
see data sheet
-40°C to 85°C
•
(1) Detailed information about most product series listed here can be found on our web site.
(2) Size for these surface mount items refers to common industry length and width dimensions of the device surface area. Example: 0402 = .04” x .02”
littelfuse.com
Overvoltage Suppression Protection
Varistor Products
Halogen Free
RoHS
QPL
CECC
Disc Size
VDE
Operating
Lines
Mount/
Temperature
Protected Form Factor
Range
CSA
Technology
Type
Operating
Peak Current Peak Energy
DC Voltage
Range (J)
Range2 (A)
Range
Lead Free
Agency Approvals
Operating
AC Voltage
Range
UR
Order Samples
Series Name1
View Datasheet
Shorthand for “Variable Resistors,” Varistors possess characteristics that divert transient currents away from sensitive components.
Littelfuse offers two types: Miniature surface mount Multi-Layer Varistors (MLVs) for small electronics applications and Metal Oxide
Varistors (MOV) for higher energy applications.
Surface Mount MLV / MOV:
MHS
•
•
9 - 42
30 - 135
300
•
MLE
•
•
18
18
22 - 28
•
ML
•
•
2.7 - 107
5.5 - 120
4 - 500
0.02 - 2.5
AUML
•
•
MLN
•
•
CH
•
•
Multi-Layer
Zinc Oxide
(MLV)
Zinc Oxide
(MOV)
18
18
5.5 - 18
30
0.05 - 0.10
14 - 275
18 - 369
100 - 250
1.0 - 8.0
SM7
•
•
115 - 510
369 - 675
1200
23 - 40
SM20
•
•
20 - 320
26
6500
165
130 - 625
170 - 825
1750 -10000
12.5 - 720
115 - 750
150 - 970
22000
230 - 890
1
-55 to
+125°C
4
•
Surface
Mount
•
Not
Applicable
•
•
•
•
• • •
•
• • •
7, 10, 14
20mm
• • • •
• • •
25mm
• • • •
• • •
1
-55 to +85°C
Radial Leaded MOV:
UltraMOV™
Varistor
•
•
UltraMOV™ 25S
Varistor
•
•
C-III
•
•
Zinc
Oxide
130 - 660
3500 - 9000
40 - 530
LA
•
•
130 - 1000
175 - 1200
1200 - 6500
11 - 360
ZA
•
•
4 - 460
5.5 - 615
50 - 6500
0.1 - 52
130 - 2800
175 - 3500
50000
70000
450 - 10000
130 - 750
175 - 970
40000
270 - 1050
130 - 750
175 - 970
25000
40000
200 - 1050
40000
270 - 1050
-55 to +85°C
1
Radial
Leaded
10, 14, 20mm • • •
• • •
7, 10, 14
• • • •
20mm
5, 7, 10, 14,
•
• •
20mm
• • •
• • •
Industrial High Energy Terminal MOV:
BA/BB
•
DA/DB
•
HA
•
HB34,
HG34, HF34
•
DHB34
•
CA
•
•
•
•
•
•
Zinc
Oxide
Screw /
Clip
Terminals
-55 to +85°C
130 - 750
175 - 970
•
250 - 2800
330 - 3500
•
250 - 2800
330 - 3500
9 - 264
13 - 365
40 - 100
0.06 - 1.7
-55 to +85°C
4 - 275
5.5 - 369
100 - 6500
0.4 - 160
-55 to
+125°C
130 - 510
4 - 675
100 - 6500
0.4 - 190
-55 to +85°C
20000
70000
20000
70000
1
Industrial
Packaged
Radial Leads
330 - 10000
330 - 10000
Bare Disc
60mm
•
•
40mm
•
• •
32, 40mm
• •
• • •
34mm
• •
• • •
34mm
• •
• • •
60mm
•
Specialty Application MOV:
MA
•
•
RA
•
•
High Reliability
•
Zinc Oxide
Inline Radial
Leads
Not
Applicable
Not
Applicable
(Varies)
(Varies)
Axial Leaded
1
• • •
• •
• •
•
Thermally Protected MOV:
SMOV™ 25S
Varistor
•
•
115 - 750
150 - 970
20000
170 - 670
-45 to +75°C
SMOV™ 34S
Varistor
•
•
115 - 750
150 - 970
40000
280 - 1200
-45 to +75°C
TMOV® 25S
Varistor
•
•
115 - 750
150 - 970
20000
170 - 670
-55 to +85°C
TMOV® 34S
Varistor
•
•
115 - 750
150 - 970
40000
235 - 1050
TMOV® Varistor /
iTMOV® Varistor
•
•
•
115 - 750
150 - 970
6000 - 10000
35 - 480
Zinc Oxide
(1) Detailed information about most product series listed here can be found on our web.
(2) Not an applicable parameter for Crowbar devices
Industrial
Packaged
Radial Leads
Industrial
Packaged
Radial Leads
25mm
•
• •
34mm
•
• •
Radial
Leaded
25mm
•
• •
• •
-55 to +85°C
Industrial
Packaged
Radial Leads
34mm
•
• •
• •
-55 to +85°C
Radial
Leaded
14, 20mm
• • • •
• •
1
GDT Products
GDTs (gas discharge tube) dissipate voltage transients through a contained plasma gas. They have high insulation resistance plus low
capacitance and leakage to ensure minimal effect on normal operation of equipment. Littelfuse devices offer a small footprint and are available
in leaded and surface mount configurations, with high surge handling capability. Their fast response to transient over-voltage events, and ability
to dissipate large amounts of energy, translates into reduced risk of equipment damage. The amount of energy they can dissipate makes them a
good choice for lightning surge protection, particularly for telecom equipment located in outdoor structures.
Lead Free
RoHS Compliant
Cartridge Clip
1.5pF
Radial Lead
1.5pF
5000A
Axial Lead
5000A
Operating
Temperature Range
Surface
Max
Capacitance
Mini Tube
Peak Pulse
Current
(8/20µs)
# Terminals
Order Samples
Series
Name1
View Datasheet
Mounting Options
DC Breakover
Max AC
Voltage Range
Surge Rating
(Nom VBO)
High Voltage GDTs:
AC
•
•
285 - 600
CG3
•
•
1000 - 7500
NA
-40°C to +90°C
2
•
•
2
•
•
•
•
Low to Medium Surge GDTs:
CG5
•
•
90 - 600
5A
5000A
1.5pF
2
•
•
SL0902A
•
•
90 - 600
5A
5000A
1.5pF
SL1002A
•
•
75 - 600
5A
5000A
1.2pF
2
•
•
•
•
2
•
•
•
•
SL1003A
•
•
90 - 500
10A*
10,000A
SL1011A
•
•
75 - 600
5A
5000A
1.2pF
3
•
1.5pF
2
-40°C to +90°C
•
•
•
•
•
•
•
•
•
•
Medium to High Surge GDTs:
SG
(1812 Size)
•
•
75 - 420
500 - 750
SL1122A
•
•
90 - 260
10A*
10000A*
100-270pF
3
SL1021A
•
•
90 - 600
10A*
10000A*
1.5pF
3
SL1024A
•
•
90 - 600
10A*
10000A*
1.5pF
PMT8
•
•
90 - 400
10A*
20000A*
1.5pF
SL1011B
•
•
75 - 350
10A
10000A
SL1411A
•
•
75 - 600
10A
PMT3
•
•
90 - 500
CG/CG2
•
•
1.0pF
•
•
•
•
•
•
•
3
•
•
•
•
3
•
•
•
•
1.5pF
2
•
•
•
•
10000A
1.5pF
2
•
•
•
•
20A*
20000A*
1.5pF
3
•
75 - 1000
20A
20000A
1.5pF
2
3
•
•
•
•
3
•
•
•
•
•
•
-40°C to +90°C
•
•
•
•
•
•
Very High Surge GDTs:
SL1021B
•
•
90 - 600
10A*
20000A*
1.5pF
SL1024B
•
•
90 - 600
10A*
20000A*
1.5pF
SL1026
•
•
275 - 700
10A*
20000A*
-40°C to +90°C
2
•
(1) Detailed information about most product series listed here can be found on our web site.
* Total current through center (ground) terminal
Through-Hole
Surface Mount
Order Samples
Series
Name
View Datasheet
PULSEGUARD® ESD SuppressorS
Technology Type Working Voltage
Array Package
(No. of Lines)
Single Line
Package
Rated
Bidirectional
Also Rated
Typical Device Leakage Immunity to
(transients Performs Low
for EFT or
Capacitance Current IEC 61000-4of either
Pass Filtering
Lightning
2 level 4
polarity)
PulseGuard® ESD Suppressors:
PGB1
•
•
•
PGB2
•
•
•
Voltage Variable
Material
Voltage Variable
Material
0–24VDC
SOT23 (2)
0–12VDC
NA
0402,
0603
0402,
0201
0.04–0.12pF
<1nA
•
•
0.07pF
<1nA
•
•
littelfuse.com
Overvoltage Suppression Protection (continued)
TVS DIODES
RoHS Compliant
UR Recognized
•
•
SOD-123
5.0 - 54
200W
•
•
*
SMAJ
•
•
DO-214AC
5.0 - 440
400W
•
•
•
P4SMA
•
•
DO-214AC
5.8 - 495
400W
•
•
•
SMA6J
•
•
DO-214AC
5.0 - 12
600W
•
•
•
SMA6L
•
•
DO-221AC
5.0 - 85
600W
•
•
*
SACB
•
•
DO-214AA
5.0 - 50
500W
•
•
•
SMBJ
•
DO-214AA
5.0 - 440
600W
•
•
•
P6SMB
•
•
DO-214AA
5.8 - 495
600W
•
•
•
1KSMB
•
•
DO-214AA
5.8 - 136
1000W
•
•
•
SMCJ
•
•
DO-214AB
5.0 - 440
1500W
•
•
•
1.5SMC
•
DO-214AB
5.8 - 495
1500W
•
•
•
SMDJ
•
DO-214AB
5.0 - 170
3000W
•
•
•
5.0SMDJ
•
DO-214AB
12 - 170
5000W
•
•
•
Photo
Order Samples
SMF
Series Name
View Datasheet
Halogen-Free
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.
Package Type
Reverse Standoff Voltage
(VR)
Peak Pulse Power
Range†
(PPP)
Peak Pulse
Current
(IPP 8/20μs)
Operating
Temperature
Surface Mount-Standard Application (200–5000W):
•
-85° to +302° F
(-65° to +150° C)
Axial Leaded-Standard Application (400–5000W):
P4KE
•
•
DO-41
5.8 - 495
400W
•
•
•
SA
•
•
DO-15
5.0 - 180
500W
•
•
•
SAC
•
•
DO-15
5.0 - 50
500W
•
•
•
•
•
•
•
•
•
P6KE
•
•
DO-15
5.8 - 512
600W
1.5KE
•
•
DO-201
5.8 - 512
1500W
-85° to +302° F
(-65° to +150° C)
LCE
•
•
DO-201
6.5 - 90
1500W
•
•
•
3KP
•
•
P600
5.0 - 220
3000W
•
•
•
5KP
•
•
P600
5.0 - 250
5000W
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Axial Leaded-High Power:
15KPA
•
•
P600
17 - 280
15000W
20KPA
•
•
P600
20 - 300
20000W
30KPA
•
•
P600
28 - 288
30000W
AK1
•
•
Radial Lead
76
1000A
AK3
•
•
Radial Lead
15 - 430
3000A
AK6
•
•
Radial Lead
30 - 430
6000A
•
•
•
•
•
•
•
•
•
-85° to +302° F
(-65° to +150° C)
AK10
•
•
Radial Lead
30 - 430
10000A
AK15
•
•
Radial Lead
58 - 76
15000A
Remark: "*" UR approval is pending.
-67° to +347° F
(-55° to +150° C)
-67° to +257° F
(-55° to +125° C)
DO-221AC
10 - 60
600W
Peak Pulse
Current
(IPP 8/20μs)
Operating
Temperature
•
•
*
AEC-Q101
Compliant
Peak Pulse Power
Range†
(PPP)
UR Recognized
Reverse Standoff Voltage
(VR)
RoHS Compliant
Package Type
Halogen-Free
Photo
Order Samples
Series Name
View Datasheet
TVS DIODES (continued)
Automotive Application:
TPSMA6L
•
•
-85° to +302° F
(-65° to +150° C)
Remark: "*" UR approval is pending.
LED Lighting Design
Explore the latest LED lighting industry
standards, product information, circuit
diagrams and links to application notes
and videos using this NEW e-book.
Scan this code
to view our
LED Lighting
Design Guide.
ESD PROTECTION
A guide for protecting electronic circuits
and interfaces from electrostatic
discharge (ESD) using TVS Diode Arrays.
Scan this code
to view our ESD
Protection
Design Guide.
ETHERNET PROTECTION
A guide for protecting Ethernet circuits
and equipment from electrostatic
discharge (ESD), lightning, power faults
and other electrical transient threats.
Scan this code
to view our
Ethernet
Design Guide.
USB 3.0 CIRCUIT PROTECTION
Learn about the key selection
criteria and tradeoffs among protection
technologies for USB 3.0 devices.
Recently updated!
Scan this code to
view our USB 3.0
Circuit Protection
Application Note.
littelfuse.com
•
Overvoltage Suppression Protection (continued)
TVS DIODE Array – SPA® DIODES
Maximum
ESD Rating
(Contact
Clamping Voltage Surge
Rating
Discharge,
(tP=8/20µs)
(tP=8/20µs)
IEC61000-4-2)
RoHS
Compliant
Package Type
Lead Free/
Green
Photo
Order
Samples
Series Name
View
Datasheet
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).
2-30V
3pF
14
4kV
2V @ 1A
3A
•
•
2-30V
3pF
6
4kV
2V @ 1A
3A
•
•
2-30V
5pF
6
8kV
2V @ 2A
7A
•
•
2-20V
3pF
4
8kV
2V @ 1A
3A
•
•
2-30V
5pF
4
8kV
2V @ 2A
14A
•
•
Working
Voltage
Capacitance
Number of
Channels
General Purpose ESD Protection (SCR Diode Array):
SP720
•
•
PDIP
SOIC
SP721
•
SP723
•
•
SP724
•
•
SOT23
SP725
•
•
SOIC
•
General Purpose ESD Protection (TVS Discretes and Arrays):
SP05
•
•
SP1001
•
•
SP1002
•
•
SC70
SOT23
SOT143
MSOP
SC70
SOT553
SOT563
SOT963
5.5V
30pF
2/3/4/5/
6
30kV
N/A
N/A
•
•
5.5V
8pF
2/4/5
15kV
8.0V @ 1A
2A
•
•
SC70
6.0V
5pF
1/2
8kV
9.2V @ 1A
2A
•
•
0402 (SOD723)
0402 (SOD882)
5.0V
30pF
1
30kV
12.0V @ 7A
7A
•
•
SP1003
•
•
SP1004
•
•
SOT953
6.0V
5pF
4
8kV
10V @ 1A
1A
•
•
0201 (Flipchip)
0402 (SOD882)
6.0V
30pF
1
30kV
9.3V @ 1A
10A
•
•
SP1005
•
•
SP1006
•
•
0201 (µDFN-2)
6.0V
25pF
1
30kV
8.3V @ 1A
5A
•
•
SP1007
•
•
0201 (Flipchip)
0402 (SOD882)
6.0V
3.5pF
1
8kV
11.2V @ 1A
2A
•
•
•
•
SP1008
0201 (Flipchip)
6.0V
6pF
1
15kV
10.7V @ 1A
2.5A
•
•
µDFN-6
6.0V
7pF
4
15kV
8.7V @ 1A
2A
•
•
•
SC70
6.0V
0.65pF
4
8kV
9.5V @ 1A
2.5A
•
•
•
SC70
SOT23
µDFN-6
6.0V
0.85pF
4
12kV
9.5V @ 1A
4.5A
•
•
SP0504S
SOT23
SP3003
•
•
µDFN-6
SC70
SOT5x3
MSOP10
6.0V
0.65pF
2/4/8
8kV
10.0V @ 1A
2.5A
•
•
SP3004
•
•
SOT563
6.0V
0.85pF
4
12kV
10.0V @ 1A
4A
•
•
6.0V
0.45pF
4
8kV
10.8V @ 1A
3A
•
•
SP1011
Low Capacitance ESD Protection:
SP3001
SP3002
•
•
SP3010
•
•
µDFN-10
SP3011
•
•
µDFN-14
6.0V
0.40pF
6
8kV
11.0V @ 1A
3A
•
•
•
µDFN-10
µDFN-14
5.0V
0.50pF
4/6
12kV
6.6V @ 1A
4A
•
•
SP3021
0402 (SOD882)
5.0V
0.50pF
1
8kV
13.1V @ 1A
2A
•
•
SP3030
0402 (SOD882)
5.0V
0.50pF
1
20kV
9.2V @ 1A
3A
•
•
SP3031
0402 (SOD882)
5.0V
0.80pF
1
10kV
6.9V @ 1A
5A
•
•
SP0524P
µDFN-10
5.0V
0.50pF
4
12kV
6.6V @ 1A
4A
•
•
SP3012
•
Lightning Surge Protection:
SRV05-4
SOT23
6.0V
2.4pF
4
20kV
11.5V @ 5A
10A
•
•
SP03-3.3
•
•
SOIC
3.3V
16pF
2
30kV
15V @ 100A
150A
•
•
SP03-6
•
•
SOIC
6.0V
16pF
2
30kV
20V @ 100A
150A
•
•
LC03-3.3
SOIC
3.3V
9.0pF
2
30kV
17V @ 100A
150A
•
•
SP2502L
SOIC
3.3V
5.0pF
2
30kV
20V @ 75A
75A
•
•
SLVU2.8
SOT23
2.8V
2.0pF
1
30kV
13.9V @ 24A
40A
•
•
2.8V
2.0pF
4
30kV
13.9V @ 24A
40A
•
•
•
SLVU2.8-4
•
•
SOIC
SR70
•
•
SOT143
70V
2.0pF
2
30kV
12V @ 30A
40A
•
SP4060
•
•
MSOP
2.5V
4.4pF
8
30kV
8.0V @ 10A
20A
•
•
SP2504N
µDFN-10
2.5V
3.5pF
4
30kV
6.3V @ 5A
20A
•
•
SP3304N
µDFN-10
3.3V
3.5pF
4
30kV
7V @ 5A
20A
•
•
PLED Light-Emitting Diode (LED) Protectors
Powermite
•
•
•
PLED6Q12
•
•
PLED6S
•
•
PLED9Q12
•
•
PLED9S
•
•
PLED13Q12
•
•
PLED13S
•
•
•
Part Number
PLED5Q12
Photo
•
•
QFN 2x2
•
•
Order Samples
•
PLED18S
•
•
•
[email protected]
VT and IT
Critical rate of
rise dV/dt
Volts
mAmps
mAmps
Amps
Volts
Volts
Max
Max
Max
Max
12
70
0.35
1.2
N/A
5
100
1.0
1.2
250V/µs
7.5
6
16
9
18
•
View Datasheet
PLED18Q12
IS
5.5
•
•
IH
Max
•
•
VBR
breakdown
Min
•
SOT 89
Photo
DO-214
Order Samples
PLED6M
Part Number
QFN 3x3
View Datasheet
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.
13
26
18
33
VAK
VTO
IS
VOS
Input
Voltage
Turn-On
Voltage
Switching
Current
Volts
Volts
Max
Min
•
•
Max
•
38
4.9
5.15
VESD
On-State
Current
ESD WIthstand
Voltage
(IEC61000-4-2)
Volts
mAmps
mAmps
kV
Max
Max
Max
Contact
Air
500
500
±8
±15
700
700
±8
±15
On-State
Voltage
mAmps
Volts
Max
Min
40
4.65
PLED5HT
Typ
IOSR
Reverse
On-State
Current
VOSR
Reverse
On-State
Voltage
[email protected]
[email protected]
IAK=350mA
IAK=350mA
[email protected]
[email protected]
IAK=700mA
IAK=700mA
IS
20
littelfuse.com
Overvoltage Suppression Protection (continued)
SIDACtor ® PROTECTION THYRISTORS
Type
Standoff
(working)
Voltage (VDRM)
Peak Pulse Rating:
Switching Voltage
(VS)
2/10µs
UR
Recognized
Package Type
RoHS
Compliant
Photo
Order
Samples
Series Name
View
Datasheet
SIDACtor® Protection Thyristors 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.
•
•
•
•
•
•
•
•
•
•
50A
•
•
•
10/1000µs
8/20µs
Broadband Optimized Protection:
•
DO-214AA
•
TO-92
•
Modified TO-220
Balanced
MC Series
•
Modified TO-220
Q2L Series
•
MC Series
MC Multiport Series
3x3 QFN
•
•
150A
45A
150A
25 - 400
500A
100A
400A
C
6 - 320
25 - 400
500A
100A
400A
150A
45A
150A
500A
100A
500A
500A
100A
400A
150A
45A
150A
250A
80A
250A
500A
100A
400A
500A
100A
400A
150A
45A
150A
250A
80A
250A
A
C
C
Pin 1-2, 3-2: 6-275 Pin 1-2, 3-2: 25-350
Pin 1-3: 12-550
Pin 1-3: 50-700
Pin 1-2, 3-2, 1-3:
130-420
Pin 1-2, 3-2, 1-3:
180-600
6 - 320
25 - 400
A
B
MS-013
C
DO-15
•
25 - 40
6 - 320
C
TwinChip™ Protectors
SDP Series
6 - 25
C
3.3x3.3 QFN
DO-214AA
•
A
A
B
A
B
6 - 320
25 - 400
220 - 640
300 - 800
220 - 320
300 - 400
3x3 QFN
F
8 - 24
15 - 35
50A
80A
•
SOT23 - 5
B
58 - 320
77 - 400
250A
80A
250A
•
SDP Biased Series
•
5x6 QFN
C
6 - 320
25 - 400
500A
100A
400A
•
•
SEP Biased Series
•
5x6 QFN
C
6 - 75
25 - 98
500A
100A
400A
•
•
P0080T023G5
•
SOT 23 - 5
G
8
15
45A
18A
50A
•
•
58 - 160
77 - 200
150A
45A
150A
500A
100A
400A
•
•
Subscriber Line Interface Circuit (SLIC) Protection:
A
Fixed Voltage Series
•
•
DO-214AA
Fixed Voltage
Twin SLIC Series
•
•
Modified
DO-214AA
A
58 - 160
77 - 200
150A
45A
150A
•
•
Fixed Voltage
Q2L Series
•
•
QFN
3.3x3.3
C
58 - 160
77 - 200
500A
100A
400A
•
•
Fixed Voltage
Single Port Series
•
•
MS-012
F
58 - 95
77 - 130
120A
30A
100A
•
•
Fixed Voltage
Enhanced Single Series
•
•
MS-012
F
58 - 160
77 - 200
120A
30A
100A
•
•
Fixed Voltage
Multiport Series
•
•
MS-013
58 - 160
77 - 200
150A
45A
150A
500A
100A
400A
•
•
Battrax® Protectors
Positive/Negative
•
•
Modified
DO-214AA
A
150A
45A
150A
C
500A
100A
400A
•
•
Battrax® Protectors
Single Port Negative
•
•
MS-013
C
500A
100A
400A
•
•
Battrax® Protectors
Single Port Positive/Negative
•
•
MS-013
C
500A
100A
400A
•
•
Battrax® Protectors
Dual Port Negative
•
•
MS-013
C
500A
100A
400A
•
•
C
A
C
These devices track their
reference voltages.
Please refer to data sheets
in SIDACtor® Protection Thyristor
catalog or www.littelfuse.com
for detailed information.
Standoff
(working)
Voltage (VDRM)
Peak Pulse Rating:
UR
Recognized
Package Type
RoHS
Compliant
Photo
Order
Samples
Series Name
View
Datasheet
SIDACtor ® PROTECTION THYRISTORS (continued)
•
•
150A
250A
400A
•
•
45A
80A
100A
150A
250A
400A
•
•
150A
50A
150A
•
•
150A
250A
500A
45A
80A
100A
45A
150A
250A
400A
•
•
•
•
150A
250A
400A
•
•
45A
150A
•
•
500A
100A
400A
•
•
180 - 600
500A
100A
400A
•
•
Pins 1-2, 3-2:
130-420
Pins 1-3: 130-420
Pins 1-2, 3-2:
180-600
Pins 1-3: 180-600
150A
45A
150A
250A
80A
250A
•
•
400A
100A
400A
150A
45A
150A
130 - 420
180 - 600
250A
80A
250A
C
500A
100A
400A
Asym. A6
150A
45A
150A
•
•
250A
80A
250A
500A
100A
400A
Type
Switching
Voltage (VS)
2/10µs
10/1000µs
8/20µs
Line Circuit Access Switch (LCAS) Protection:
A
150A
45A
150A
500A
100A
400A
130 - 290
150A
250A
500A
45A
80A
100A
6 - 320
25 - 400
150A
250A
500A
6 - 320
25 - 400
6 - 320
25 - 400
90 - 320
130 - 400
A
B
C
Pins 1-2,3-2:
25-275
Pins 1-3: 50-550
Pins 1-2,3-2:
40-350
Pins 1-3: 80-700
150A
250A
400A
45A
80A
100A
A
Pins 1-2,3-2,4-5,6-5:
25-400
Pins 1-3,4-6: 50-800
150A
C
Pins 1-2,3-2,4-5,6-5:
6-320
Pins 1-3,4-6: 12-640
C
130 - 420
A
Asymmetrical
Multiport Series
•
•
MS-013
Custom LCAS
Discrete Series
•
•
DO-214AA
A
B
C
100 - 230
DO-214AA
A
B
C
DO-214AC (SMA)
A
C
These products have asymmetric
trigger voltages. See data sheet.
Baseband Protection (Voice-DS1):
•
SIDACtor®
Protection Thyristors
SIDACtor® Protection
Thyristors Multiport
Series
SIDACtor® Protection
Thyristors Balanced
Series
•
•
•
TO-92
•
•
DO-15
•
•
Modified TO-220
•
•
MS-013
•
MS-013
•
Modified TO-220
A
B
C
A
B
B
C
A
SIDACtor® Protection
Thyristors Balanced
Multiport Series
B
•
•
MS-013
Asym. C6
Pins 1-2,2-3,4-5,5-6:
170-400
Pins 4-6,1-3: 50-270
Pins 1-2,2-3,4-5,5-6:
250-550
Pins 4-6,1-3: 80-340
Asym. B6
80A
T10A Series
•
•
DO-15
A
50 - 245
84 - 370
50A
100A
•
•
T10B Series
•
•
DO-201
B
80 - 275
120 - 360
100A
250A
•
•
High Exposure Surge Protection:
Primary Protection
Series
•
•
Modified TO-220
C
Pins 1-2,3-2:
25-275
Pins 1-3: 50-550
Pins 1-2,3-2:
40-350
Pins 1-3: 80-700
500A
100A
400A
•
•
Primary Protection
Balanced Series
•
•
Modified TO-220
C
Pins 1-2, 3-2:
130-420
Pins 1-3: 130-420
Pins 1-2, 3-2:
180-600
Pins 1-3: 180-600
500A
100A
400A
•
•
5kA Series
•
•
TO-218
E
140 - 180
180 - 260
5000A
•
•
DO-214AA
D
6 - 320
25 - 400
800A
•
•
High Surge Current Series
1000A
200A
littelfuse.com
Switching Technologies
Switching ThyristorS
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® Semiconductors, 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.
Through-Hole Packages:
DO-15
TO-92-2L
Other:
TO-92-3L
TO-251
TO-220
TO-218
DO-214AA
TO-252
TO-263
TO-218X
TO3 Fastpak
Surface Mount Packages:
•
•
3-10mA
L01
•
•
4A
3-25mA
Lxx04xx
•
•
Qxx04xx
•
•
6A
5-50mA
Lxx06xx
•
•
Qxx06xx
•
•
Qxx06xHx
•
8A
5-50mA
Lxx08xx
•
•
Qxx08xx
•
•
Qxx08xHx
Qxx10xx
•
•
TO-263
Lx01Ex,LxNx
TO-252
3-25mA
Compak
•
TO-3
•
TO-218X Isl
LX8
TO-218 Isl
3-5mA
TO-220 Non-Isl
•
TO-220 Isl
•
TO-251
•
TO-92
•
Alternistor
Order Samples
LxX8Ex
LxXx
Standard
View Datasheet
3-25mA
Sensitive
Surface Mount
Through-Hole
SOT-223
Series
Order Samples
IGT (Q1)
Order Samples
VDRM/VRRM
Compak
View Datasheet
IT(RMS)
SOT-223
View Datasheet
SOT-89
Triac:
0.8A
0.8A
400-600V
1.0A
1.0A
10A
400-800V
400-1000V
25-50mA
QxX8Ex
QxXx
•
•
•
Qx01Ex,QxNx
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Qxx10xHx
•
•
•
•
•
Qxx12xHx
•
•
•
•
•
•
12A
10-50mA
15A & 16A
10-80mA
Qxx15xx
•
•
Qxx16xHx
•
•
•
•
25A
50-80mA
Qxx25xx
•
•
Qxx25xHx
•
•
•
•
•
HQ6025xH5
•
•
•
•
•
Qxx35xHx
•
•
•
•
Qxx40xx
•
•
25A
600V
50mA
30A & 35A
400-800V
50mA
40A
400-1000V
50-100mA
Qxx35xx
•
•
400-600V
4-15A
QxxxxLT
QxxxxLTH
•
•
•
•
•
•
QUADRAC® Semiconductors:
•
•
•
Switching ThyristorS (continued)
•
•
TO-92
•
•
TO-263
•
TO-252
SxX8xSx
SOT-223
5 - 200µA
Compak
400-800V
TO-218X Non-Isl
0.8A
TO-218X Isl
•
TO-218AC Non-Isl
•
TO-218AC Isl
•
TO-220 Non-Isl
EC103xx
SxSx
TO-220 Isl
12 - 500µA
TO-251
400-600V
Standard
Order Samples
0.8A
Sensitive
Surface Mount
Through-Hole
SOT-89
Series
View Datasheet
IGT (Q1)
Order Samples
VDRM/VRRM
View Datasheet
IT(RMS)
SCR:
1A
Sx01E
SxN1
10mA
1.5A
•
•
•
•
•
200µA
TCR22-x
•
•
•
1.5A
200µA
Sx02xS
•
•
•
4A
50- 500µA
Sxx04xSx
•
•
6A
0.2-15mA
Sxx06xSx
•
•
Sxx06x
•
•
•
•
•
•
8A
0.2-15mA
Sxx08xSx
•
•
Sxx08x
•
•
•
•
•
•
10A
0.2-15mA
Sxx10xSx
•
•
Sxx10x
•
•
•
•
•
•
12A
20mA
Sxx12x
•
•
•
•
•
15A & 16A
30mA
Sxx15x
Sxx16x
•
•
•
•
•
30-35mA
Sxx20x
Sxx25x
•
•
•
•
•
35A
40mA
Sxx35x
•
•
40A
40mA
Sxx40x
•
•
•
55A
40mA
Sxx55x
•
•
•
65A
50mA
Sxx65x
•
•
70A
50mA
Sxx70x
•
•
400-600V
400-1000V
20A & 25A
•
•
•
•
•
•
•
•
•
•
•
•
Order
Samples
Multipulse
View
Datasheet
Order
Samples
High Energy
View
Datasheet
Order
Samples
Standard
View
Datasheet
Series
Through Hole
Surface
Mount
Switching VBO
IH
ITSM
static dv/dt
di/dt
TJ
DO-15,TO-92
DO-214AA
79-330V
150mA
20A
1500V/µs
150A/µs
-40 to +125 °C
DO-214AA
190-280V
150mA
20A
150A/µs
-40 to +125 °C
SIDAC:
Kxxxzy
•
•
Kxxx0yH
•
•
DO-15,TO-92
K2xx0GHU
•
•
DO-15
190-260V
60mA
220A/µs
-40 to +125 °C
DO-15
200-380V
120mA
150A/µs
-40 to +125 °C
IF(RMS)
Order
Samples
Series
View
Datasheet
Kxxx1G
Through Hole
•
TO-220 Isl.
•
•
IF(AV)
RMS forward
Average
current
forward current
I t Value for
fusing
Tstg
Storage
temperature
range
TJ
210 - 508 A2s
-40 to +150 °C
-40 to +125 °C
I2t
IFSM
Peak non-repetitive surge current
2
Rectifiers:
Dxx15L
•
Dxx20L
•
Dxx25L
•
15 - 25A
9.5 to15.9A
single half cycle; f = 50Hz;
single half cycle; f = 60Hz;
TJ (initial) = 25°C
TJ (initial) = 25°C
188 - 300A
225 - 350A
littelfuse.com
Common
Circuit Threats
and Protection
Solutions
Threat or
Circuit Action
Typical
Applications
Principal
Protection Criteria
Littelfuse Protection
Technologies
What is the threat or circuit
action that may damage
sensitive electronics?
What are the typical
end products that require
protection from this damage?
What are the characteristics
required of the
circuit protection technology?
Which circuit protection
technologies best serve
these types of situations?
Overcurrent / Ground Faults
Systems that are grounded and/or
in near proximity to AC power lines
Proper interrupting rating, current
carrying capability and voltage rating
Fuses and/or PTCs
Lightning
Any electronic or electrical equipment
with connections to the
outside environment
Fast response,
proper switching threshold,
surge current rating
SIDACtor® Protection Thyristors,
Varistors (MOVs),
TVS Diodes,
Gas Discharge Tubes (GDTs)
Electrostatic Discharge (ESD)
Any electronic equipment
with a human interface
Fast response,
high peak voltage rating
PulseGuard® ESD Suppressors,
TVS Diode Array – SPA® Diodes,
Multi-Layer Varistors (MLVs)
PLED Bypass Protectors
Electrical Fast Transients (EFT)
Any system that has inductive loads
Fast rise time and recovery
for repetitive pulses
TVS Diodes,
Varistors (MLVs and MOVs),
TVS Diode Array – SPA® Diodes
Inductive Load Switching and
Commutative Spikes
Large motors, pumps, compressors,
relays and AC distribution
High energy rating
Varistors (MOVs and MLVs),
GDTs, TVS Diodes
Data and Communication Line
Voltage Transients
Ethernet, xDSL, data bus,
telecom, etc.
Fast response,
low load capacitance
TVS Diode Array – SPA® Diodes,
SIDACtor® Protection Thyristors
Current Switching / Diversion
Wide range of electrical and
electronic circuits
Proper blocking voltage and current
carrying capacity
Switching Thyristors,
PLED Bypass Protectors
OVERCURRENT EVENTS
VOLTAGE TRANSIENT EVENTS
Excessive current events can lead to catastrophic
failures in electronic circuits. These failures can
result in safety hazards such as fire, shock, or
explosion. Common types of overcurrent
threats include:
Voltage transients are short duration surges or
spikes. Unsuppressed, they may damage circuits and
components, and result in complete system failure.
Below are descriptions of common types of voltage
transients, and technologies to reduce their effects:
Overload
Electrostatic Discharge (ESD)
Overloads occur when more current is allowed to
flow through a circuit path than it was designed
to carry. This excess current can generate and
accumulate heat and result in complete circuit
destruction and possible fire, electrocution or
explosion. Sources of overload can include:
Damage from ESD is generally caused by the transfer
of static electrical charge from a body to an electronic
circuit. It may result in faulty circuit operation, latent
defects, and even catastrophic failure of sensitive
components. ESD suppressors must have very fast
response times and handle high peak voltages and
currents for short durations. Littelfuse offers a range
of PulseGuard® ESD suppressors, Multi-Layer Varistors
(MLVs) and TVS Diode Array – SPA® Diodes that are
designed to suppress these types of events.
• Construction hazards cutting across power mains
• Equipment failure in the power grid
• Environmental hazards on the power grid
• Short spikes of energy within the circuit as a result
of turning equipment on or off
Short Circuit
Short circuits occur when one conducting path
comes in contact with another conducting path or
with ground, such as may occur due to a loose wire,
insulation breakdown, or contact with water. These
conditions can increase the likelihood of arcs, shock,
or fire hazards.
The principal forms of protection against overcurrent
conditions include fuses and resettable positive
temperature coefficient (PTC) thermistors.
Their function is to limit current to acceptable
levels and prevent catastrophic events, and during
acceptable conditions act dormant with a minimal
amount of resistance to the circuit.
Fuses will completely stop the flow of current when
opened, which may be desired with sensitive,
expensive or critical applications.
PTCs offer the ability to re-set for withstanding
most minor, common and recurring overcurrent
events. They will allow safe levels of current to pass
continuously, and during major overcurrent events,
increase in resistance as they heat, to restrict the
flow of current. When the overcurrent event ends,
the device resets to its normal operating state.
Inductive Load Switching
Switching of inductive loads, such as those that occur
with transformers, generators, motors, and relays, can
create transients up to hundreds of volts and amps, and
can last as long as 400 milliseconds, affecting both AC
and DC circuits. For these applications, commonly used
suppressor devices include Metal Oxide Varistors (MOVs),
Gas Discharge Tubes (GDTs), and Transient Voltage
Suppression (TVS) Diodes.
Lightning Induced Transient
Most transients induced by nearby lightning strikes
result in an electromagnetic disturbance on electrical
and communication lines connected to electronic
equipment. Devices that protect against these transients
must have a fast response time and must be able to
dissipate a large amount of energy. Littelfuse Metal
Oxide Varistor (MOV), TVS Diodes and GDT products are
typically used to protect against these events. Look to
Littelfuse SIDACtor ® Protection Thyristors and TVS Diode
Array – SPA® Diode products for Telecom/Datacom
requirements (see page 22).
Automotive Load Dump
Load dump refers to what happens to the supply voltage
in a vehicle when a load is removed. If a load is removed
rapidly (such as when the battery is disconnected while
the engine is running), the voltage may spike before
stabilizing and damage electronic components. In a
typical 12V circuit, load dump can rise as high as 120V
and take 400 ms to decay—more than enough to cause
serious damage. Littelfuse offers a wide range of TVS
Diode and Multi-Layer Varistor (MLV) products designed
to protect against these types of events.
littelfuse.com
Application
Solutions by
Circuit Type and
Related Threat
Consumer ELECTRONIC product applications
Computers—Server, Notebook, Ultrabook, Desktop Handheld Portables—Smart Phone, Tablet, eReader, PND/GPS, MP3/PMP, Digital Camera/Camcorder Consumer A/V Equipment—LCD/LED TV, set top box, DVD player
Peripherals—Scanner, Printer, Monitor, Disk Drive Circuit Type
Function or Threat
Standards
Littelfuse Product Series
TVS Diode Array
SPA® Diodes
Medium/Low-Speed
Data Interfaces:
USB 1.1, Ethernet, RS-232,
RS-485, Keypads, Audio,
Analog Video
ESD, EMI, EFT
IEC61000-4-2
IEC61000-4-4
Overcurrent
High-Speed
Data Interfaces:
USB 2.0/3.0, HDMI, eSATA,
DisplayPort, DVI, IEEE 1394,
RF Antenna
ESD, EMI, EFT
IEC61000-4-2,
IEC61000-4-4
Power Inputs:
120/240 VAC
Overcurrent
PGB1, PGB2 - 0201, 0402, 0603
TVS Diode Array
SPA® Diodes
SP30xx, SP40xx, SP0524P, SP0504S
TVS Diode
Power Inputs:
Blade DC input,
Low voltage DC,
Li-ion Battery
IEC61000-4-2,
IEC61000-4-5
SL SMT Series 0402L, 0603L, 0805L,
1206L, 1210L, 1812L
SMF, SMAJ, SMA6L, SMBJ, SMCJ,
SMDJ, P4KE, P6KE, 1.5KE
Varistor (MOV)
LA, UltraMOV™, C-III, TMOV® varistors
Fuse
SMD: Nano2®, Fuse, PICO® SMD fuses
Leaded: 2AG, 3AB/3AG, 5x20, 3.6x10,
TR5®/TE5 fuses
TVS Diode
Lightning / ESD
0603L, 0805L, 1206L, 1210L, 1812L, 2920L
PulseGuard®
ESD Supressor
LoRho PTCs
IEC61000-4-5
MLA, MLE, MLN, MHS
SIDACtor® Protection
PxxxxSA/SB/SC, PxxxxQ12/Q22
Thyristors
SMF, SMAJ, SMA6L, SMBJ,
TVS Diodes
SMCJ, SMDJ
PTCs
Overcurrent
Lightning
Varistor (MLV)
SP05x, SP10xx, SP40xx, LC03, SP72x,
SP03-xx, SLVU2.8, SLVU2.8-4
SMF, SMAJ, SMA6L, SMBJ, SMCJ,
SMDJ, P4KE, P6KE, 1.5KE
Varistor (MLV)
ML, MLE
Varistor (MOV)
ZA
Fuse
Overcurrent
LoRho PTC
SMD - Thin Film, Ceramic, Chip, Nano2®,
(1206 size), 501 (20A), 456 (40A) fuses
SL SMT Series 0402L, 0603L, 0805L,
1206L, 1210L, 1812L
POWER MAINS / AC Line PROTECTION*
Circuit Type
Function or Threat Littelfuse Product Series
Type 1 (Power before the panel)
Surge Protective Devices (SPD)
(Primary building entrance, electric meters)
Lightning
Varistor (MOV)
SMOV™, TMOV®, UltraMOV™, LA, C-III, HA, HB34, HF34, HG34
varistors
Varistor (MOV)
SMOV™, TMOV®, UltraMOV™, LA, C-III, HA, HB34, HF34, HG34
varistors
Type 2 (Permanently connected devices after the panel)
Uninterruptible Power Supply
(commercial/industrial)
Lightning, Switching Transients
Surge Protective Devices (SPD)
(building level equipment, load-center
panels, datacenters)
Power Inverters
Power Fault / Short Circuit and other
themal events
TVS Diode
5KP, 15KPA, 20KPA, 30KPA, AK1, AK3, AK6, AK10, AK15
GDT
AC120, AC240
Fuse
POWR-GARD® Midget fuses
LVSP series (MOV protection)
Type 3 (Plug-in equipment after the panel)
Uninterruptible Power Supply
(consumer/residential)
External Power Supplies
(chargers, peripheral devices, etc)
Varistor (MOV)
Lightning, Switching Transients
GDT
Consumer Electronics
AC Appliances
AC Power Strips
Switch Mode Power Supplies
TVS Diode
Power Fault / Short Circuit and other
themal events
Fuse
TMOV®, UltraMOV™, LA, C-III, HA, HB34, HF34, HG34 varistors
5KP, 15KPA, 20KPA, 30KPA, AK1, AK3, AK6, AK10, AK15
CG3 4.0
Thru Hole: TR5® / TE5, 2AG, 3AG, 5x20, 3.6x10, PICO® fuses
Surface Mount: Nano2®, PICO® SMD fuses
Lighting systems
Circuit Type
Function or Threat Littelfuse Product Series
Improved LED String Reliability
LED Lighting Systems
Light Dimmers
Power Supply (Lightning, Inductive
Load Switching)
PLED devices
PLEDxx
Varistor (MOV)
TMOV®, UltraMOV™, CH, LA, C-III varistors
TVS Diode
Power Fault / Short Circuit and
other themal events
Fuse
Phase Control
Thyrsitor
SMBJ, P4KE, P6KE, 1.5KE, 5KP, 15KPA, 30KPA,
AK1, AK3, AK6, AK10, AK15
Thru Hole: TR5® / TE5, 2AG, 3AG, 5x20, 3.6x10, PICO® fuses
Surface Mount: Ceramic Chip, Nano2®, PICO® SMD
(High Voltage) 477 series, 505 series, 808 series, 485 series fuses
Triacs / Alternistor Triacs: Q6010Lx, Q6016Lx, Q6025Lx
QUADRAC® semiconductors: Q6010LT, Q6015LT
3.6x10
Overcurrent (Europe)
Fuse
Electronic Fluorescent
Lighting Ballasts
Lightning
Varistor (MOV)
Overcurrent
Fuse
383 TR series / 369 TR5® series, 446 / 447 EBF fuse
Compact Fluorescent Lamps (CFL)
Overcurrent
Fuse
3.6x10
Metal Halide Lighting
Lamp Ignition
Thyristor
Multipulse Sidac: K2401G
High Pressure Sodium Lighting
Lamp Ignition
Thyristor
Sidac: K1200G
LA
Electric Motors*
Circuit Type
Universal / DC Motors
(intermittant use)
Function or Threat Littelfuse Product Series
Speed Control
Speed Control
AC Induction Motors
(continuous use)
Thyristor Overvoltage Protection
Thyristor
Triac: Q6016LH4
SCR: S6025L
Rectifier: D6025L
Thyristor
Triac: Q6012LH4
Varistor (MOV)
TVS Diode
LA, SM20
SMBJ, P4KE, P6KE, 1.5KE
* Littelfuse offers protection solutions to serve a wide range of electric motors, controllers and power systems. Please consult with your Littelfuse products
representative for detailed discussion about your requirements. For higher power and industrial applications, please refer to our POWR-GARD® division
product catalogs (www.littelfuse.com/catalogs).
littelfuse.com
Application Solutions by Circuit Type and Related Threat (continued)
Telecom/Datacom
Circuit
Medium/Low-Speed
Data Interfaces:
USB 1.1, RS-232, RS-485,
Keypads, Audio, Analog
Video
Threat
Standards
TVS Diode Array SP05x, SP10xx, SP40xx, SP72x, SP03-xx, SLVU2.8,
SPA® Diodes
SLVU2.8-4
ESD, EMI, EFT
IEC61000-4-2,
IEC61000-4-4
ESD, EMI, EFT
Low-Speed Circuits:
Voice, Fax, Modem,
FXO / DAA
PTCs
IEC61000-4-2,
IEC61000-4-4
Overcurrent
Overvoltage
SLICs
(Subscriber Line
Interface Circuits):
CO sites, Remote
Cabinets/Terminals,
VoIP systems,
FXS ports
Varistor (MLV)
TVS Diodes
Overcurrent
High-Speed Data
Interfaces:
USB 2.0/3.0, HDMI, eSATA,
DisplayPort, DVI, IEEE 1394,
RF Antenna
Littelfuse Product Series
Lightning
Power Fault
Lightning
Power Fault
IEC61000-4-5, GR-1089,
ITU-7 K.12
GR-1089, TIA-968-A/B,
ITU K.20/.21/.45,
UL/EN/IEC 60950-1,
UL 497B,
IEC 61000-4-5,
YD/T-993
GR-1089, TIA-968-A/B,
ITU K.20/.21/.45,
UL/EN/IEC 60950-1,
UL 497B,
IEC 61000-4-5,
YD/T-993
PulseGuard®
ESD Suppressor
Lightning
GR-1089, TIA-968-A/B,
ITU K.20/.21/.45, UL/EN/
IEC 60950-1, UL 497B,
YD/T-993, IEEE 802.3,
IEC61000-4-5
Power Fault
ESD
IEC 61000-4-2
xDSL:
ADSL, ADSL2, HDSL,
VDSL, VDSL2
Lightning
GR-1089, TIA-968-A/B,
ITU K.20/.21/.45,
IEC 61000-4-5,
YD/T-993, IEEE 802.3
Primary Protection
Lightning and Power
Fault
UL497
GR-974
UL/EN/IEC 60950-1
Lightning
Power Inputs:
120/240 VAC, up to
120 VDC, ATCA
Fault Current
PGB1, PGB2 - 0201, 0402, 0603
PTCs
0805L, 1206L, 1210L, 1812L
GDTs
SG, SL0902A
SIDACtor®
Protection
Thyristors
Pxxx1 Fixed Voltage SLIC Protectors
Bxxxx Battrax® Programmable SLIC Protectors
Fuses
TeleLink® 461
PTCs
600R150
SIDACtor®
Protection
Thyristors
Pxxxx SIDACtor® Protectors
SDP series low profile SIDACtor® Protectors
GDTs
SL0902A, SL1002A, SL1003A, SL1011A, SL1024A
Fuses
TeleLink® 461 fuse
PTCs
600R150
PxxxxxxMCL SIDACtor® Protectors
Pxxx2xxMCL TwinChip™ Protectors
PxxxxQxx QFN SIDACtor® Protectors, SDP, SEP series
low profile SIDACtor® Protectors, SDP023T
Fuses
TeleLink® 461 / 461E fuses
PTCs
600R150, 250S, 250R
SIDACtor®
Protection
Thyristors
Lightning
0805L, 1206L, 1210L, 1812L
GR-1089, TIA-968-A/B,
TVS Diode Array SRV05-4, SP4060, SP2504N, SP3304N, SP2502L,
ITU K.20/.21/.45, UL/EN/
SPA® Diodes
LC03, SP03-xx
IEC 60950-1,UL 497B, IEC
61000-4-5, YD/T-993
GDTs
SL0902A, SL1002A, SL1003A, SL1011A, SL1024A
Power Fault
Ethernet:
10/100/1000BaseT
SMF, SMAJ, SMA6L, SMBJ, SMCJ, SMDJ
TVS Diode Array
SP30xx, SP40xx, SP0524P, SP0504S
SPA® Diodes
SIDACtor®
Protection
Thyristors
Medium-Speed Circuits:
T1/E1/J1/DS1,
T3/E3/DS3
ML, MLE, MLN, MHS
GDTs
SDP, SEP series low profile SIDACtor® Protectors
SL0902A, SL1002A, SL1003A, SL1011A, SL1024A
TVS Diode Array SP30xx, SP40xx, LC03, SLVU2.8, SLVU2.8-4, SRV05-4,
SP2504N, SP3304N, SP2502L, SP03A-3.3
SPA® Diodes
Fuses
TeleLink® 461 fuse
PTCs
600R150, 250S, 250R
TVS Diode Array
SP30xx, SP0524P, SP0504S
SPA® Diodes
®
SIDACtor
Protection
SDP SIDACtor® Protectors, SDP023T
Thyristors
TVS Diode Array
SR70
SPA® Diodes
GDT
TVS Diode
Varistor (MOV)
Fuse
SL0902A, SL1002A, SL1003A, SL1011A,
SL1024A, SL1411A, SL1021A, SL1122A
P4KE, P6KE, 1.5KE, AK1, AK3, AK6, AK10, AK15
CH, ZA, UltraMOV™ varistors
Midget Series (SFE, KlK, KLKD, BLS, BLN, FLQ, FLM,
FLA, KLQ)
Fast Acting: 435, 431/434, 429/433, 271, 446, 445, 451/453,
456, 459
Slo-Blo® fuses: 430, 452 / 454, 461, PICO® II fuses
Automotive Electronics*
Engine/Body/Chassis Controllers — Anti-lock brake / steering / air bag / seat belt / collision control and
other safety systems and sensors, lighting / signalling controls, instrument cluster, engine / emission
controllers, window / wipers controls, door lock / security controls, seating sensors and controllers
Multimedia/Information Systems — In-dash stereo / GPS / climate control electronics, portable GPS,
portable CD/DVD/media players, audio / video / data / power docks and inputs
Circuit Type
Function or Threat
High-Speed Interfaces:
USB 2.0, IEEE 1394
ESD
Medium/Low-Speed
Interfaces:
USB 1.1, CAN
ESD, EMI
Standards
Littelfuse Product Series
PulseGuard® ESD
Suppressor
TVS Diode Array
SPA® Diodes
TVS Diode Array
SPA® Diodes
IEC61000-4-2
IEC61000-4-2
Varistor (MLV)
Fault Currents
RoHS; ISO 7637;
GM 9105; Various UL,
CSA, IEC, MITI
SP30xx, SP0524P, SP0504S
SP05x, SP72x, SP10xx
ML, MLE, MLN, MHS
Blade / Terminal Fuse Series:
257, 297, 298, 299, 495, 498
Fuse
(see automotive products catalogs)
Power Inputs:
Up to 42 VDC
Varistor (MLV)
Load Dump
and Inductive Switching
PGB1, PGB2 - 0201, 0402, 0603
TVS Diode
(AEC-Q101)
—
Varistor (MOV)
AUML, MLA, MLE, MHS
TPSMA6L
CH, ZA
* Littelfuse offers a wide range of solutions designed to serve the requirements of automotive, truck, and off-road vehicle applications. Please refer to our automotive
products catalogs (www.littelfuse.com/catalogs) and your Littelfuse products representative for detailed discussion about your requirements.
White goods / Appliances
Circuit Type
Function or Threat
Littelfuse Product Series
AC Induction Motor
On / Off / Speed Control
Switching Thyristor
Alternistor Triac
AC Shaded Pole Motor Fan
On / Off / Speed Control
Switching Thyristor
EV Series Triac
EV Series Triac
On / Off
Switching Thyristor
Spike Suppression
Varistor (MOV)
Brushless DC Motor Drive
DC Supply Protection
TVS Diode
Display / Touchscreen
ESD Protection
Varistor (MLV)
Free-Running Oscillator
Switching Thyristor
K2xxxyH Series SIDAC
Micro-controller Fired
Switching Thyristor
EC Series SCR
Heating Element
On / Off / Variable
Switching Thyristor
HQ Series High Temp Triac
Incandescent Bulb
On / Off / Dim
Switching Thyristor
L-Series Triac
LED Indicator / Light
ESD Protection
Varistor (MLV)
AC Solenoid Valve / Lock
Gas Ignitor
LA
1.5KE / 1.5SMC
ML
ML
MicroController I/O
ESD Protection
Varistor (MLV)
ML
Sensor
ESD Protection
Varistor (MLV)
ML
AC Input Overcurrent
Fuse
Input Overvoltage
Varistor (MOV)
Output Overcurrent
Fuse
Switch-Mode Power Supply
Output Overvoltage
Touch Keypad
ESD Protection
Triac Control
Overvoltage Protection
Wax Motor Latch / Lock
On / Off
TVS Diode
Varistor (MLV)
TVS Diode Array – SPA® Diodes
TVS Diode
Varistor (MOV)
Switching Thyristor
Cartridge 215, 218, 877, PICO ® II, TR / TE 392,
382 fuses
LA
477, 977, 505 HV DC Cartridge, TE 808 HV DC,
485 Nano2® fuses
1.5KE / 1.5SMC
ML
SP10xx
1.5KE / 1.5SMC
LA
EV Series Triac
littelfuse.com
littelfuse.com
[email protected]
EC102Nv0115
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