The TAS0182603DH from Powerex is a Silicon Controlled Rectifier with Breakover Voltage 1800 V, Breakover Current 38000 A, Gate Trigger Voltage 4.5 V, Gate Trigger Current 0.2 A, Temperature Operating Range -40 to 125 Degree C. Tags: Disc. More details for TAS0182603DH can be seen below.