Littelfuse, Inc. (Littelfuse) designs and supplies circuit protection products for the electronics industry. Littelfuse designs, manufactures and sells circuit protection devices for use in the automotive, electronic and electrical markets throughout the world. The Company is a provider of circuit protection for the automotive industry and is the producer of electrical fuses in North America. The Company has three operating business unit segments: Electronics, Automotive and Electrical. On February 29, 2008, the Company acquired Shock Block Corporation (Shock Block). On September 30, 2008, Littelfuse acquired Startco Engineering Ltd. (Startco).