Littelfuse is one of the top manufacturers of circuit-protection components in the world. Littelfuse is the only company which has a complete lineup. Littelfuse has a wide range of applications in the electronics, automotive, industrial equipment, and aerospace fields, and it has a large number of achievements in the Japanese market. March 2016 Littelfuse acquired plant in Japan (Tsukuba) by acquiring the business of Tyco Electronics CPD Division. The establishment of the Technical/Manufacturing/Quality Division in Japan strengthened its support system to Japanese customers.