The Vishay Semiconductors product portfolio includes rectifiers, fast-recovery diodes, high-power diodes and thyristors, small-signal diodes, Zener and suppressor diodes, RF transistors, optoelectronics, power modules (a combination of power diodes, thyristors, MOSFETs, and IGBTs), and automotive modules and assemblies. Vishay is the world's number one manufacturer of rectifiers, glass diodes, and infrared components.