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Littelfuse, Inc is a multinational electronic manufacturing company based in Chicago, Illinois. The company primarily produces circuit protection products but also manufactures a variety of electronic switches and automotive sensors. Gordon Hunter serves as Littelfuse CEO. Littelfuse is the developer of AutoFuse, the first blade-type automotive fuse. Littelfuse designs and manufactures circuit protection products for the electronics, automotive and electrical industries.The company operates between three business unit segments: Electronics, Electrical, and Automotive. Products include: fuses and protectors, suppressors, gas discharge tubes, electronic switches, solenoids, battery management devices, and protective relays. With the acquisition of Hamlin, Inc. in 2013, Littelfuse expanded its product offering to include sensors for the automotive, industrial and consumer industries.

  • Fuses
  • Fuse Blocks Fuseholders and Fuse Accessories
  • TVS Diodes 
  • TVS Diode Arrays 
  • Resettable PTCs 
  • LED Protectors 
  • Protection Relays and Controls
  • DC Solenoids and Relays 
  • Custom-Engineered Electrical Equipment
  • Battery Management 
  • Electrical Switch Panels
  • GDTs 
  • Gas Discharge Tubes
  • Switches 
  • Switching Thyristors 
  • PulseGuard ESD Suppressors
  • Sidactor Protection Thyristors 
  • Shock-Block GFCI
  • Varistors 
  • Power Semiconductors