The STYN8140 from Sirectifier Electronics is a Silicon Controlled Rectifier with Breakover Voltage 800 V, Breakover Current 930 to 1190 A, Gate Trigger Voltage 1.5 to 1.6 V, Gate Trigger Current 100 to 200 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Through Hole. More details for STYN8140 can be seen below.