View bta208 datasheet:

Philips Semiconductors Product specification Three quadrant triacs BTA208 series B high commutation GENERAL DESCRIPTION QUICK REFERENCE DATA Glass passivated high commutation SYMBOL PARAMETER MAX. MAX. MAX. UNIT triacs in a plastic envelope intended for use in circuits where high static and BTA208- 500B 600B 800B dynamic dV/dt and high dI/dt can VDRM Repetitive peak 500 600 800 V occur. These devices will commutate off-state voltages the full rated rms current at the IT(RMS) RMS on-state current 8 8 8 A maximum rated junction temperature, ITSM Non-repetitive peak on-state 65 65 65 A without the aid of a snubber. current PINNING - TO220AB PIN CONFIGURATION SYMBOL PIN DESCRIPTION tab 1 main terminal 1 T2 T1 2 main terminal 2 3 gate G 1 2 3 tab main terminal 2 LIMITIN