The 2N6170HR from Digitron Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 240 to 560 A, Gate Trigger Voltage 0.8 to 2.5 V, Gate Trigger Current 2.1 to 75 mA, Temperature Operating Range -40 to 100 Degree C. Tags: Stud Mount. More details for 2N6170HR can be seen below.