Siliconix Breaks On-Resistance Records With 16- and 20-V TrenchFETs® in the LITTLE FOOT® SO-8

SANTA CLARA, CALIFORNIA - August 17, 2001 - Siliconix incorporated (NASDAQ: SILI), an 80.4%-owned subsidiary of Vishay Intertechnology, Inc. (NYSE: VSH), has reconfirmed its performance leadership in the power MOSFET arena with the release of two TrenchFETs^® in the LITTLE FOOT^® SO-8 with about half the on-resistance of the closest equivalent devices on the market.

Aimed at synchronous buck dc-to-dc converter applications, the new devices are rated for a maximum r_DS(on) of just 3.5 mΩ for the Si4864DY and 3.3 mΩ for the Si4862DY. Either device can handle up to 25 A at a 4.5-V gate-to-source voltage. Maximum V_DS for the Si4864DY is 20 V, while the Si4862DY is the industry's first power MOSFET with a 16-V drain-source voltage rating.

Used as the low-side synchronous MOSFET in dc-to-dc circuits, the new devices will enable the design of more efficient power converters in desktop computers, servers, and routers. The 20-V Si4864DY is intended for use in systems with 12-V power buses, while the Si4862DY, with its 16-V breakdown voltage, provides generous headroom in 5-V systems while eliminating the overkill - and on-resistance penalty - of using a 20-V MOSFET witha 5-V bus.

Samples and production quantities of the Si4862DY and Si4864DY are available now, with lead times of 8 to 10 weeks for larger orders.

Vishay Intertechnology, Inc., a Fortune 1,000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers of discrete semiconductors (diodes, rectifiers, transistors, and optoelectronics and selected ICs) and passive electronic components (resistors, capacitors, inductors, sensors, and transducers). These components are used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, and medical markets. Its product innovations, successful acquisition strategy, and ability to provide "one-stop shop" service have made Vishay a global industry leader. Vishay can be found on the Internet at http://www.vishay.com.

LITTLE FOOT and TrenchFET are registered trademarks of Siliconix incorporated.