The STYN1025 from Sirectifier Electronics is a Silicon Controlled Rectifier with Breakover Voltage 1000 V, Breakover Current 300 to 314 A, Gate Trigger Voltage 1.3 V, Gate Trigger Current 4 to 40 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for STYN1025 can be seen below.