The CR-03 from Yangzhou Positioning Tech is a Silicon Controlled Rectifier with Breakover Voltage 1400 V, Breakover Current 20 A, Gate Trigger Voltage 0.8 to 1.0 V, Gate Trigger Current 20 to 100 µA, Temperature Operating Range -40 to 125 Degree C. Tags: Surface Mount. More details for CR-03 can be seen below.