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Littelfuse Inc.

57,894 products

Littelfuse is a leading manufacturer of circuit protection components including fuses, TVS diodes, MOSFETs, sensors, and protective devices for automotive, industrial, and consumer electronics.

Product Categories

Audio Products Alarms, Buzzers, and Sirens

Battery Products Accessories

Boxes, Enclosures, Racks Boxes Racks Rack Accessories

Cable Assemblies Circular Cable Assemblies Rectangular Cable Assemblies Specialized Cable Assemblies

Cables, Wires Multiple Conductor Cables

Cables, Wires - Management Cable Supports and Fasteners Cable and Cord Grips

Circuit Protection Fuses Fuseholders TVS - Varistors, MOVs Gas Discharge Tube Arresters (GDT) Circuit Breakers TVS - Diodes Accessories Thermal Cutoffs (Thermal Fuses and Breakers) TVS - Thyristors Ground Fault Circuit Interrupter (GFCI) TVS - Mixed Technology PTC Resettable Fuses Inrush Current Limiters (ICL) Surge Suppression ICs Lighting Protection Electrical, Specialty Fuses TVS - Surge Protection Devices (SPDs)

Connectors, Interconnects Terminals - Wire Splice Connectors Terminal Strips and Turret Boards Terminal Blocks - Accessories Circular Connectors - Housings Circular Connectors - Accessories Circular Connectors - Contacts Power Entry Connectors - Accessories Terminals - Specialized Connectors Terminal Blocks - Barrier Blocks Circular Connectors - Adapters Terminals - Spade Connectors Terminals - Quick Connects, Quick Disconnect Connectors Terminals - Ring Connectors Terminal Blocks - Power Distribution Blade Type Power Connectors - Contacts Circular Connectors

Development Boards, Kits, Programmers Evaluation and Demonstration Boards and Kits

Discrete Semiconductor Products Thyristors - DIACs, SIDACs Transistors - FETs, MOSFETs - Single Transistors - IGBTs - Single Diodes - Rectifiers - Single Thyristors - SCRs Diodes - Rectifiers - Arrays Diodes - Zener - Single Transistors - IGBTs - Modules Thyristors - SCRs - Modules Thyristors - TRIACs

Fans, Thermal Management Thermal - Adhesives, Epoxies, Greases, Pastes

Filters EMI/RFI Filters (LC, RC Networks) Common Mode Chokes

Hardware, Fasteners, Accessories Knobs Accessories Washers Nuts Miscellaneous DIN Rail Channel

Inductors, Coils, Chokes Fixed Inductors

Industrial Automation and Controls Accessories Controllers - Process, Temperature Specialized Controllers - Liquid, Level Monitor - Current/Voltage Transducer Protection Relays & Systems Monitor - Relay Output Controllers - Accessories Time Delay Relays

Integrated Circuits (ICs) PMIC - Battery Management PMIC - Power Distribution Switches, Load Drivers PMIC - Lighting, Ballast Controllers PMIC - OR Controllers, Ideal Diodes

Isolators Optoisolators - Transistor, Photovoltaic Output

Kits Connector Kits Miscellaneous Sensor Kits Cable Assemblies Circuit Protection - Assortment Kits Circuit Protection Kits - Fuse Circuit Protection Kits - TVS Diodes

Line Protection, Distribution, Backups Power Distribution, Surge Protectors

Motors, Solenoids, Driver Boards/Modules Accessories

Networking Solutions Miscellaneous

Optoelectronics Accessories Panel Indicators, Pilot Lights

Potentiometers, Variable Resistors Accessories Scale Dials Rotary Potentiometers, Rheostats

Relays Relays Accessories Solid State Relays Relay Sockets Power Relays, Over 2 Amps Automotive Relays Reed Relays Contactors (Electromechanical) Safety Relays

Resistors Specialized Resistors

Sensors, Transducers Temperature Sensors - NTC Thermistors Accessories Magnets - Multi Purpose Temperature Sensors - Thermocouples, Temperature Probes Temperature Sensors - Analog and Digital Output Flow Sensors Float, Level Sensors Current Sensors Shock Sensors Temperature Sensors - RTD (Resistance Temperature Detector) Position Sensors - Angle, Linear Position Measuring Temperature Sensors - PTC Thermistors Magnetic Sensors - Position, Proximity, Speed (Modules) Magnetic Sensors - Switches (Solid State) Magnets - Sensor Matched Magnetic Sensors - Position, Proximity, Speed (Modules) - Industrial

Switches Disconnect Switch Components Accessories Magnetic, Reed Switches Rocker Switches Keylock Switches Limit Switches Pushbutton Switches Rotary Switches Toggle Switches Selector Switches Accessories - Caps Accessories - Boots, Seals Cable Pull Switches

Test and Measurement Equipment - Specialty

Tools Wrenches

Transformers Current Sense Transformers

Uncategorized Unclassified

About Littelfuse Inc.

Littelfuse Inc. (NASDAQ: LFUS) is a leading manufacturer of electrical and electronic protection devices serving automotive, industrial, consumer electronics, medical, and aerospace markets worldwide. Founded in 1927 and headquartered in Rosemont, Illinois, Littelfuse offers the broadest portfolio of circuit protection solutions in the industry including fuses, TVS diodes, surge protection devices, MOSFETs, IGBTs, protection ICs, and sensors. Recent product innovations include the NANO2 415 Series Surface Mount Fuse (2025 Product of the Year), IX4352NEAU automotive gate driver with AEC-Q100 qualification, and K5V series tactile switches with integrated LEDs. Littelfuse also acquired C&K Switches, expanding their portfolio to include switches for automotive, industrial, and consumer applications. The company operates global manufacturing facilities and serves customers through distributor networks worldwide.