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. Founded in 1927. In addition to its Chicago, Illinois, world headquarters, Littelfuse has more than 40 sales, distribution, manufacturing and engineering facilities in the Americas, Europe and Asia.
Littelfuse designs and manufactures circuit protection products for the electronics, automotive and electrical industries.The company operates between three business unit segments: Electronics, Industrial, 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.