New Vishay Siliconix 40-V and 60-V MOSFETs Feature Industry's First C

    Business Editors/High-Tech Editors

    SANTA CLARA, Calif.--(BUSINESS WIRE)--April 20, 2005--Siliconix Inc. (NASDAQ: SILI), an 80.4%-owned subsidiary of Vishay Intertechnology Inc. (NYSE: VSH), today announced the industry's first n-channel MOSFETs that combine a high 3.4-V threshold voltage with on-resistance as low as 2.7 milliohms.
    The 10 new MOSFETs, available in 40-V and 60-V versions, are intended for use in high-temperature, high-current applications with inductive loads in the automotive, industrial and fixed telecom industries, such as high-side switches, motor drives and 12-V boardnets.
    When MOSFETs operate in high-temperature, high-current environments, they can turn on spontaneously if their threshold voltage, impacted by heat, starts to approach 0 V. Until now, this posed a dilemma for designers. One solution was the addition of a negative voltage driver to the circuit, but the drawbacks were increased circuit size, cost and complexity. Another solution would be to use a device with a high threshold voltage, but the effect in this case is an undesirable increase in on-resistance.
    This new power MOSFET family provides a way out of this dilemma with high-density silicon technology that allows the same device to deliver both low on-resistance and a high threshold voltage that avoids the problem of spontaneous turn-on in automotive, industrial, and other applications involving high temperatures and high levels of current.

Summary of Device Specifications

Max Breakdown On-resistance Junction Device Number Package Voltage at 10-V Tempera- (V) gate drive ture (milliohms) (degrees C) ---------------------------------------------------------------------- SUM110N04-2m7H D2PAK (TO-263) 40 2.7 175 ---------------------------------------------------------------------- SUM110N04-05H D2PAK (TO-263) 40 5.3 175 ---------------------------------------------------------------------- SUD50N04-06H DPAK (TO-252) 40 6.0 175 ---------------------------------------------------------------------- SUD50N04-09H DPAK (TO-252) 40 9.0 175 ---------------------------------------------------------------------- Si7444DP PowerPAK SO-8 40 6.1 150 ---------------------------------------------------------------------- Si7962DP PowerPAK SO-8 40 17.0 150 ---------------------------------------------------------------------- SUM110N06-3m9H D2PAK (TO-263) 60 3.9 175 ---------------------------------------------------------------------- SUD50N06-08H DPAK (TO-252) 60 7.8 175 ---------------------------------------------------------------------- Si7452DP PowerPAK SO-8 60 8.3 150 ---------------------------------------------------------------------- Si7964DP PowerPAK SO-8 60 23.0 150 ----------------------------------------------------------------------

    Available in the DPAK, D2PAK and PowerPAK SO-8 packages, samples and production quantities of the new 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 2004 worldwide sales of $466.1 million, the company's facilities include a company-owned Class 1 wafer fab dedicated to the manufacture of power products in Santa Clara, Calif., and a Class 1 wafer fab located in Itzehoe, Germany, utilized under a lease arrangement. 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 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), selected ICs and passive electronic components (resistors, capacitors, inductors and transducers). Vishay's components can be found in products manufactured in a very broad range of industries worldwide. Vishay is headquartered in Malvern, Pa., and has operations in 17 countries employing over 25,000 people. Vishay can be found on the Internet at http://www.vishay.com.

    PowerPAK is a registered trademark of Siliconix Inc.

--30--LR/ix*

CONTACT: Siliconix Inc., Santa Clara Peter Henrici, 408-567-8400 peter.henrici@vishay.com or Wall Street Communications Bob Decker, 415-409-0233 bob.decker@wallstcom.com

KEYWORD: CALIFORNIA INDUSTRY KEYWORD: HARDWARE PRODUCT SOURCE: Siliconix Inc.

Copyright Business Wire 2005