View bta204w datasheet:

Philips Semiconductors Product specification Three quadrant triacs BTA204W series B and C high commutation GENERAL DESCRIPTION QUICK REFERENCE DATA Passivated high commutation triacs in SYMBOL PARAMETER MAX. MAX. MAX. UNIT a plastic envelope suitable for surface mounting intended for use in circuits BTA204W- 500B 600B 800B where high static and dynamic dV/dt BTA204W- 500C 600C 800C and high dI/dt can occur. These VDRM Repetitive peak 500 600 800 V devices will commutate the full rated off-state voltages rms current at the maximum rated IT(RMS) RMS on-state current 1 1 1 A junction temperature without the aid of ITSM Non-repetitive peak on-state 10 10 10 A a snubber. current PINNING - SOT223 PIN CONFIGURATION SYMBOL PIN DESCRIPTION 4 1 main terminal 1 T2 T1 2 main termi