The VS-25RIA120 is a metal-oxide semiconductor field-effect transistor (MOSFET) manufactured by Vishay. It is a high voltage, slow turn-off gate-controlled thyristor (SCR) that is rated for a maximum voltage of 1200V and maximum current of 25A. This SCR is used for a wide range of applications including motor driver, medical equipment, and power supply design. It features low on-state and turn-off voltage drop, low gate-trigger current, and low reverse recovery charge. It is available in a TO-247 package and is RoHS compliant.