The T2251N80TOH from Infineon Technologies is a Silicon Controlled Rectifier with Breakover Voltage 8000 V, Breakover Current 65000 A, Gate Trigger Voltage 2.5 V, Gate Trigger Current 2260 A, Temperature Operating Range -40 to 125 Degree C. Tags: Chassis Mount. More details for T2251N80TOH can be seen below.