View st280c-c datasheet:

Bulletin I25159 rev. C 02/00 ST280C..C SERIES PHASE CONTROL THYRISTORS Hockey Puk Version Features 500A Center amplifying gate Metal case with ceramic insulator International standard case TO-200AB (A-PUK) Typical Applications DC motor controls Controlled DC power supplies AC controllers case style TO-200AB (A-PUK) Major Ratings and Characteristics Parameters ST280C..C Units IT(AV) 500 A @ Ths 55 °C IT(RMS) 960 A @ Ths 25 °C ITSM @ 50Hz 7850 A @ 60Hz 8220 A I2t @ 50Hz 308 KA2s @ 60Hz 281 KA2s VDRM/VRRM 400 to 600 V t typical 100 µs q TJ - 40 to 125 °C www.irf.com 1 ST280C..C Series Bulletin I25159 rev. C 02/00 ELECTRICAL SPECIFICATIONS Voltage Ratings Voltage VDRM/VRRM, max. repetitive VRSM , maximum non- IDRM/IRRM max. Type number Code peak and off-state