The MCR101HR from Digitron Semiconductors is a Silicon Controlled Rectifier with Breakover Voltage 15 V, Breakover Current 6.0 A, Gate Trigger Voltage 0.8 to 1.2 V, Gate Trigger Current 200 µA, Temperature Operating Range -65 to 85 Degree C. Tags: Through Hole. More details for MCR101HR can be seen below.