在1998年，威世收购了TEMIC的半导体业务部分（Semiconductor Business Group of TEMIC），这部分业务包括了特洛芬肯（Telefunken）公司和硅尼克斯（Siliconix）公司80.4%的股份，它们主要生产晶体管、二极管、光电子装置、电源和模拟开关集成电路。威世随后卖掉了它在Lite-On的股份，主要是为了更好地专注于硅尼克斯（Siliconix）和特洛芬肯（Telefunken）的成功业务。
VISHAY Completes the acquisition of TEMIC SEMICONDUCTOR
Malvern, Pennsylvania, March 3 - Dr. Felix Zandman, Chairman and Chief Executive Officer of Vishay Intertechnology, Inc., the largest U.S. and European manufacturer of passive electronic components, today announced the completion of the acquisition of the semiconductor business unit of Temic Telefunken microelectronic GmbH, Heilbronn, Germany.