The VS-25TTS16STRR-M3 from Vishay is a Silicon Controlled Rectifier with Breakover Voltage 1600 V, Breakover Current 350 A, Gate Trigger Voltage 1 to 2.5 V, Gate Trigger Current 20 to 60 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Surface Mount. More details for VS-25TTS16STRR-M3 can be seen below.