Littelfuse Inc.
Product Categories
-
- 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)
- 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
-
- 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
-
- 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
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.
