Vishay's New SUR Family of TrenchFET® Power MOSFETs Features Reverse-Lead TO-252 Package for Improved Efficiency, High-Current Operation, and Space Savings

Devices Offer Range of On-Resistance Values from 4 mΩ to 16 mΩ

SANTA CLARA, CALIFORNIA — February 25, 2004 — Siliconix incorporated (NASDAQ: SILI), an 80.4%-owned subsidiary of Vishay Intertechnology, Inc. (NYSE: VSH), today announced a new family of TrenchFET® power MOSFETs in a reverse-lead TO-252 DPAK package.

The reverse-formed leads of the "SUR"-packaged TrenchFETs allow the device to be mounted inversely on the PCB with a heat sink on top, enabling cooler operation. Because heat generated from power can be dissipated to the air rather than to the PCB, each of these power MOSFETs features a lower effective on-resistance value and higher current capability than DPAK power MOSFETs with conventional lead-outs. Cooler operation also takes thermal stress off the board, contributing to better overall reliability.

Used for desktop computer core dc-to-dc conversion applications, the SUR power MOSFETs enable the design of "greener" VRM modules and PC motherboards that use power more efficiently and require fewer components.

The 20-V SUR70N02-04P and 30 V SUR50N03-06P, SUR50N03-09P, SUR50N03-12P, and SUR50N03-16P power MOSFETs offer a range of on-resistance values from 4 mΩ to 16 mΩ and can serve as both synchronous and control FETs in dc-to-dc converters.

SUR TrenchFET Power MOSFET Family: Summary Table

Samples and production quantities of SUR family reverse-lead TrenchFET power MOSFETs are available now, with lead times of 10 to 12 weeks for larger orders.

Siliconix is a leading manufacturer of power MOSFETs, power ICs, analog switches, and multiplexers for computers, cell phones, fixed communications networks, automobiles, and other consumer and industrial electronic systems. With 2003 worldwide sales of $392.1 million, the Company's facilities include a Class 1 wafer fab dedicated to the manufacture of power products in Santa Clara, California and an affiliated Class 1 wafer fab located in Itzehoe, Germany. The Company's products are also fabricated by subcontractors in Japan, Germany, China, Taiwan, and the United States. Assembly and test facilities include a company-owned facility in Taiwan, a joint venture in Shanghai, China, and subcontractors in the Philippines, China, Taiwan, and Israel.

Vishay, a Fortune 1,000 Company listed on the NYSE, is one of the world's largest manufacturers of discrete semiconductors (diodes, rectifiers, transistors, optoelectronics, and selected ICs) and passive electronic components (resistors, capacitors, inductors, and transducers). The Company's components can be found in products manufactured in a very broad range of industries worldwide. Vishay is headquartered in Malvern, Pennsylvania, and has plants in 17 countries employing over 25,000 people. Vishay can be found on the Internet at www.vishay.com.

TrenchFET is a registered trademark of Siliconix incorporated.