Littelfuse to Report Second Quarter Results August 1

Littelfuse, Inc. (NASDAQ/NGS: LFUS) today announced it will release results for the second quarter of 2007 prior to the opening of the market on Wednesday, August 1, 2007. Company management will host a conference call later that morning, Wednesday, August 1, 2007, at 10:00 a.m. Central / 11:00 a.m. Eastern time to discuss the results. The call will be broadcast live over the Internet and can be accessed through the company’s Web site: www.littelfuse.com. Listeners should go to the Web site at least 15 minutes prior to the call to download and install any necessary audio software. The call will be available for replay through September 30, 2007 on the company’s Web site. As the worldwide leader in circuit protection products and solutions with annual sales of $534.9 million in 2006, the Littelfuse portfolio is backed by industry leading technical support, design and manufacturing expertise. Littelfuse products are vital components in virtually every product that uses electrical energy, including automobiles, computers, consumer electronics, handheld devices, industrial equipment, and telecom/datacom circuits. Littelfuse offers Teccor®, Wickmann® and Pudenz® brand circuit protection products. In addition to its Des Plaines, Illinois, world headquarters, Littelfuse has sales, distribution, manufacturing and engineering facilities in Brazil, China, England, Germany, Hong Kong, India, Ireland, Japan, Korea, Mexico, the Netherlands, the Philippines, Singapore, Taiwan and the U.S. For more information, please visit Littelfuse’s web site at www.littelfuse.com.