The T1220N28TOF VT from Infineon Technologies is a Silicon Controlled Rectifier with Breakover Voltage 2800 V, Breakover Current 22500 A, Gate Trigger Voltage 2.2 V, Gate Trigger Current 1220 A, Temperature Operating Range -40 to 125 Degree C. Tags: Chassis Mount. More details for T1220N28TOF VT can be seen below.