A triggered current can turn on this scr phase control thyristor 25TTS12STRLPBF thyristor manufactured from Vishay and it will continue to operate when a forward-biased voltage is applied. This device has a surge current rating of 350 A. Its repetitive peak forward blocking voltage is 1200 V, while its repetitive peak reverse voltage is 1200 V. This SCR thyristor has an operating temperature range of -40 °C to 125 °C.