Littelfuse to Acquire the Gas Discharge Tubes Assets of SRC Devices, Inc.

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DES PLAINES, Illinois, August 1, 2006 - Littelfuse, Inc. (NASDAQ/NGS:LFUS) today announced it has acquired the gas discharge tube (GDT) assets of SRC Devices, Inc., for $6 million in cash, subject to post-closing purchase price adjustments. Headquartered in La Jolla, Calif. with a manufacturing facility in Guadalajara, Mexico, SRC Devices is a leader in the design and manufacture of gas discharge tubes, high-quality reed switches and reed relays. The acquisition is expected to be neutral to Littelfuse earnings in 2006.

“This is a strategic step that broadens our GDT product line and brings new customers to Littelfuse. The acquisition gives Littelfuse a strong base in industrial applications for the GDT products and further enhances our already solid position in the telecom market,” said David Samyn, Vice President and General Manager of Littelfuse’s Electronics Business Unit.

“We plan to move production of the GDT product line from the SRC manufacturing facility in Mexico to our existing operation in Suzhou, China. Consolidating production of the GDT line at one facility will enable us to reduce costs and further leverage our existing capabilities in China,” said Samyn.

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. Technologies offered by Littelfuse include Fuses; Gas Discharge Tubes (GDTs); Positive Temperature Coefficient Devices (PTCs); Relays, Controls, and Systems; PulseGuard® ESD Suppressors; SIDACtor® Protection Thyristors; TVS Diode Arrays (SPA™ Family of Products); Switching Thyristors; TVS Diodes and Varistors. The company also offers a comprehensive line of highly reliable Electromechanical and Electronic Switch and Control Devices for commercial and specialty vehicles, as well as underground Power Distribution.

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