Littelfuse, Inc. is a global manufacturer and seller of circuit protection, power control, and sensing products serving diverse industries, including automotive electronics, energy storage systems, telecommunications, and industrial automation. The company has three business segments; Electronics, Transportation, and Industrial, each offering a range of products such as fuses, sensors, diodes, switches, modules, and relays. Littelfuse, Inc. distributes its products through various channels, including direct sales, distributors, and representatives, and has its headquarters in Chicago, Illinois.