The SRR6012D1TP from Littelfuse is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 12 A, Gate Trigger Voltage 1.6 V, Gate Trigger Current 0.006 A, Temperature Operating Range -40 to 125 Degree C. Tags: Surface Mount. More details for SRR6012D1TP can be seen below.