The T730N42TOF VT from Infineon Technologies is a Silicon Controlled Rectifier with Breakover Voltage 4200 V, Breakover Current 15800 A, Gate Trigger Voltage 2.5 V, Gate Trigger Current 730 A, Temperature Operating Range -40 to 120 Degree C. Tags: Chassis Mount. More details for T730N42TOF VT can be seen below.