Vishay Intertechnology, Inc. is an American manufacturer of discrete semiconductors and passive electronic component founded by Polish-born businessman Felix Zandman. Vishay has manufacturing plants in Israel, Asia, Europe, and the Americas where it produces rectifiers, diodes, MOSFETs, optoelectronics, selected integrated circuits, resistors, capacitors, and inductors. Vishay Intertechnology revenues for 2011 were $2.594 billion. As of December 31, 2011, Vishay Intertechnology had approximately 20,900 full-time employees