Using a current trigger will turn this scr X0202MA 2BL2 thyristor manufactured from STMicroelectronics on and applying a forward-biased voltage to it will keep it on. This device has a surge current rating of 25 A. This SCR thyristor has a minimum operating temperature of -40 °C and a maximum of 125 °C. Its repetitive peak forward blocking voltage is 600 V, while its repetitive peak reverse voltage is 600 V.