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
Littelfuse manufactures the broadest
and most innovative selection of fuses
to serve nearly every possible application More...
Fuse Blocks, Fuse Holders 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...
Resettable PTCs
Resettable Overcurrent Protection From
The Industry Leader
Wide Selection of Surface Mount, Radial
Leaded and Battery Strap Items
New Low Resistance Items Now Available 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
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...
Custom-Engineered Electrical Equipment
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...
Switching Thyristors
Solid state switches used to control the flow of electrical current
Often used for circuit protection in home appliance, electrical tool and outdoor equipment applications
Wide selection of thru-hole and surface mount options available
Browse our variety of switching thyristors 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
Comprehensive portfolio of advanced power semiconductor
components, including silicon and wide band gap solutions
in discrete and multi-chip module forms. More...
Surge Protection Module
Thermally protected varistor technology
IP66 water-proof and dust-proof
CE Compliance
UL1449 Type 4 Recognized
Compliant with IEC 61643-11 Class II and EN 61643-11 Class II 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...
