View bt137-600d isc datasheet:

isc Triacs BT137-600D FEATURES ·With TO-220 package ·Glass passivated triacs in a plasticenvelope, for use in general purposebidirectional switching and phase control applications, which are intendedto be interfaced directly to microcontrollers, logic integrated circuits and other low power gate trigger circuits. ·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 600 V DRM V Repetitive peak off-state voltage 600 V RRM I RMS on-state current (full sine wave) 8 A T(RMS) I Non-repetitive peak on-state current 65 A TSM P Peak gate power dissipation 5 W GM P Average gate power dissipation 0.5 W G(AV) T Operating junction temperature 125