Teccor is the most recognized brand in telecom overvoltage circuit protection, with products that are renowned for high quality and high reliability. With the aid of patented technology and superior silicon designs, Teccor SIDACtor? and Battrax? devices can withstand high surge currents making them the most durable protection thyristors on the market today.

Teccor, based in Irving, Texas, has annual global sales of approximately $75 million. Teccor manufactures and markets semiconductor products for the telecommunications and industrial market segments. The company manufactures two product groups: a line of transient voltage suppressor devices and a line of power switching devices. Teccor has the number one market share position in North America and is in the top three globally for both product categories.

Teccor was acquired by Littelfuse.

DES PLAINES, Illinois, July 8, 2003 - Littelfuse, Inc. announced it has acquired Teccor Electronics, Inc. from a subsidiary of Invensys plc for $44 million in cash plus a future payment of $5 million contingent on sales of Teccor products reaching $107 million for calendar year 2005.

Littelfuse is a global company offering the broadest line of circuit protection products in the industry. In addition to its Des Plaines world headquarters, Littelfuse has manufacturing facilities in England, Ireland, Switzerland, Mexico, China and the Philippines, as well as in Centralia, Des Plaines and Arcola, Illinois. It also has sales, engineering and distribution facilities in the Netherlands, Singapore, Hong Kong, Taiwan, Japan, Korea and Brazil.

About Littelfuse Founded in 1927, Littelfuse, Inc., the worldwide leader in circuit protection, offers the industry’s broadest and deepest portfolio of circuit protection products and solutions. Littelfuse devices protect products in virtually every market that uses electrical energy, from consumer electronics to automobiles to industrial equipment. In addition to its Chicago, Illinois, world headquarters, Littelfuse has more than 20 sales, distribution, manufacturing and engineering facilities in the Americas, Europe and Asia.