The MCR106L-8-AA3-R from Unisonic Technologies is a Silicon Controlled Rectifier with Breakover Voltage 600 V, Breakover Current 25 A, Gate Trigger Voltage 1 V, Gate Trigger Current 200 to 500 uA, Temperature Operating Range -40 to 110 Degree C. Tags: Surface Mount. More details for MCR106L-8-AA3-R can be seen below.