View bta12 isc datasheet:

isc Triacs BTA12 FEATURES ·With TO-220AB insulated package ·Suitable for general purpose AC switching. Which can be used as an ON/OFF function in applications such as static relays, heating regulation,induction motor starting circuits. Or for phase control operation in light dimmers, motor speed controllers etc. ·Minimum Lot-to-Lot variations for robust device performance and reliable operation ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER MIN UNIT V Repetitive peak off-state voltage 800 V DRM V Repetitive peak off-state voltage 800 V RRM I RMS on-state current (full sine wave)T =90℃ 12 A T(RMS) j I 120 A TSM Non-repetitive peak on-state current t =20ms p T Operating junction temperature 125 ℃ j T Storage temperature -40~150 ℃ stg R Thermal resista