Littelfuse Inc. Circuit Protection Products

Littelfuse Inc.

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

4 categories

Circuit Protection

TVS - Diodes TVS - Thyristors TVS - Mixed Technology

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

Integrated Circuits (ICs)

PMIC - Power Distribution Switches, Load Drivers PMIC - Lighting, Ballast Controllers

Sensors, Transducers

Temperature Sensors - Analog and Digital Output Current Sensors Position Sensors - Angle, Linear Position Measuring Magnetic Sensors - Switches (Solid State)

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.