
Thyristor BT151-500R.127 with reverse voltage 500 V, directional current 7.5 A, gate current 2 mA and housing TO220AB.

The thyristor is a major electronic component in high-voltage electrical engineering. It is a semiconductor element with a non-linear volt-ampere characteristic with two stable states of low and high conductivity. Due to the absence of switching parts, the triosters have high performance and long life and are therefore widely used as a substitute for various contactors and relays in starting circuits, regulators, rectifiers, inverters, automatic devices and more.