The T9K7450802DH from Powerex is a Silicon Controlled Rectifier with Breakover Voltage 4500 V, Breakover Current 9000 A, Gate Trigger Voltage 4.5 V, Gate Trigger Current 0.3 A, Temperature Operating Range -40 to 125 Degree C. Tags: Disc. More details for T9K7450802DH can be seen below.