Littelfuse

Littelfuse offers POWR-GARD®, Teccor®, Wickmann®, Pudenz® and SIDACtor® brand circuit protection products, with a wide range of technologies such as fuses, PTCs, varistors, TVS diodes, thyristors and silicon protection arrays. As a worldwide leader in circuit protection products and solutions, the Littelfuse portfolio is backed by industry leading technical support, design and manufacturing expertise. Littelfuse products are vital components in virtually every product that uses electrical energy, including automobiles, computers, consumer electronics, handheld devices, industrial equipment, and telecom/datacom circuits.

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Product Categories                                                                                                                                          


Fuses
Automotive Fuse Link Definition and Specifications:Automotive use links are self-acting break appliances for the protection of electrical devices against unsuitable current loads. The current flow is interrupted by the melting of the fuse wire in which the current flows. More...




Fuse Blocks, Fuseholders and Fuse Accessories

Enable easy fuse installation and replacement

with our comprehensive line of fuse blocks,

fuse holders, and fuse accessories for

automotive, electronic, and industrial applications. More...



Automotive Sensors
Littelfuse offers an extensive portfolio of Automotive Sensors that includes a wide range of automotive and commercial vehicle products designed to monitor the passenger compartment occupants and environment as well as the vehicle’s powertrain, emissions, speed and suspension. More...



Magnetic Sensors and Reed Switches

Littelfuse is a global leader in providing magnetic sensing
solutions. Our selection of magnetic sensors includes reed
switches, reed sensors, Hall Effect sensors, and reed relays,
as well as bare and packaged magnetic actuators. More...



TVS Diodes
Low incremental surge resistance
Unidirectional and Bidirectional polarities available
Reverse standoff voltages range from 5V to 495V
Peak power ratings from 400W to 30kW
High current protection available - 1kA, 3kA, 6kA, 10kA and 15kA More...


TVS Diode Arrays
Protect electronics from fast and damaging voltage transients, such as lightning and electrostatic discharge (ESD) — Littelfuse TVS Diode Arrays offer an ideal protection solution for I/O interfaces and digital and analog signal lines. Find the TVS Diode Arrays you’re looking for by browsing our products below More...



PolyZen Devices
Combination PolySwitch PTC and zener diode in a single package
Helps protect downstream components from overvoltage,
overcurrent, and reverse bias
Single component placement reduces material and
manufacturing costs More...


PolySwitch Resettable PTCs
Resettable Overcurrent Protection From
The Industry Leader
Wide Selection of Surface Mount, Radial
Leaded and Battery Strap Items
New Low Resistance PolySwitch® Resettable PTCs Now Available More...


Battery Mini-Breakers (Thermal Cutoff Devices)

Helps provide resettable overtemperature and overcurrent
protection in high-capacity LiP and prismatic cells.
Capable of handling the high battery discharge currents in
tablets, ulta-books, and notebook PCs. More...



LED Protectors
LED Protectors are perfect for reverse polarity and ESD protection for high reliability outdoor lighting. Protect your LED electronic devices from potential overvoltage and overcurrent transients.More...




Protection Relays and Controls

The Protection Relay and Control product portfolio includes a comprehensive line motor and pump protection relays, arc-flash relays, ground fault relays, feeder protection, pump controllers, time delay relays, flashers and tower lighting, and more to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from injury due to electrical faults. More...


DC Solenoids and Relays

DC solenoids are relays used for remote switching of electrical currents from 20A to 600A. Littelfuse offers a variety of DC solenoids and relays, such as solid state relays, plug-in relays, compact relays and much more. Browse our selection below.  More...




Battery Management
Littelfuse battery management devices provide various methods of conserving starting power, protecting against over-discharge, combining power from two battery banks, and protecting auxiliary equipment such as liftgate motors. More...




Fusible Switches and Panels
Pre-Engineered Fusible Panels and Switches provide a complete, one-piece solution for easy procurement and code compliance. Select a series below for more information. More...





Gas Discharge Tubes
High voltage transient surge protection in small devices 
Designed to dissipate large amounts of energy 
Good choice for lightning surge protection 
Widely applied to outdoor telecom equipment 
Leaded and surface mount configurations available More...


Switches
The electrical and electronic switches section includes all kinds of manually-operated, foot-operated, and mechanically-operated switches; and switches operated by temperature or pressure. See RELAYS section for remotely-operated switches. Browse our selection of electrical and electronic switches below. More...



Polymer ESD Suppressors
Ideal for protecting high speed data line applications, 
Polymer ESD Suppressor devices offer extremely low 
capacitance and small size — they ensure ESD protection 
while ensuring signal integrity More...



SIDACtor Protection Thyristors
A broad range of semiconductor protection thyristor over-voltage transient suppression devices designed to serve requirements of telecom and data networking equipment applications. More...




Shock-Block GFCI

More...






Varistors
Rugged and reliable overvoltage protection 
Many form factor and protection ranges available 
High surge capability - up to 70,000 Amp 
Thermal protection options available 
Browse our products below to find varistors More...


Other Products and Accessories
More...






Power Semiconductors
Power semiconductors are components used to convert energy from one form to another at various stages between the points of energy generation and energy consumption. A power semiconductor component can take the form of a discrete transistor, thyristor, or diode; or if a higher level of current or integration is required, the component can take the form of a multi-chip module, which contains more than one of these devices in a desired configuration or topology. More...

Integrated Circuits
We offer customers greater functionality in a smaller footprint at a lower cost due to our unique mix of high-voltage wafer fabrication, isolation barrier expertise, multi-chip packaging experience, and expertise in analog, mixed signal, and power design.. More...




Surge Protection Modules and Devices

Our surge protection devices (SPDs) and modules are designed to provide protection from transient overvoltage. The modules are intended for use in surge protectors for outdoor and commercial LED lighting fixtures while the SPDs are for branch circuits in industrial facilities. More...

DC Power Distribution Modules (PDM)

Power Distribution Modules (PDM) for vehicles or commercial equipment feature multiple electrical power outputs, acceptance of many fuses, fuse types & relays and allow for custom configuration. More...

EMC Components

Common Mode Noise Filters (CMF) attenuate common mode 
noise in differential and balanced transmission, and power 
supply and audio lines. CMF are ideal for suppressing 
unwanted common mode noise with frequencies ranging from 
hundreds of MHz to GHz with no adverse effect on the signals. More...

 

Temperature Sensors

Littelfuse is a world-class manufacturer of an extensive

variety of the highest quality thermistors as well as

thermistor and RTD probes and assemblies. More...

Electrical sockets, plugs and coils used for connection of a truck 

and trailer on commercial vehicles or caravans for 12 and 24V 

systems. Available in 2, 3, 7, 13 or 15 pole variations including 

specialized applications such as ABS, EBS, Greycon and ISOBUS. More...

Battery Protectors

Littelfuse surface mount Li-ion battery protectors designed to guard against overcurrent and overcharging. Ideal for mobile/portable applications including smart appliances, consumer electronics and power tools. More...

 

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