Vishay is one of the world's largest manufacturers of discrete semiconductors and passive components. It produces diodes, rectifiers, MOSFETs, optoelectronics, selected ICs, 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. Vishay is the number one manufacturer worldwide in several product categories, including low-voltage power MOSFETs; rectifiers; glass diodes; infrared components; wirewound and other power resistors; foil, SMD thin film, leaded film resistors; and wet tantalum capacitors.