The PST-S2535-12B from Yangzhou Positioning Tech is a Silicon Controlled Rectifier with Breakover Voltage 1200 V, Breakover Current 350 A, Gate Trigger Voltage 1.3 V, Gate Trigger Current 35 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for PST-S2535-12B can be seen below.