The 2N6237HR from Digitron Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 50 V, Breakover Current 25 to 35 A, Gate Trigger Voltage 1 V, Gate Trigger Current 200 to 500 µA, Temperature Operating Range -40 to 110 Degree C. Tags: Through Hole. More details for 2N6237HR can be seen below.