The T9S0201803DH from Powerex is a Silicon Controlled Rectifier with Breakover Voltage 2000 V, Breakover Current 20600 A, Gate Trigger Voltage 3 V, Gate Trigger Current 0.2 A, Temperature Operating Range -20 to 125 Degree C. Tags: Disc. More details for T9S0201803DH can be seen below.