View bta204s datasheet:

Philips Semiconductors Product specification Three quadrant triacs BTA204S series B and C high commutation BTA204M series B and C 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 BTA204S (or BTA204M)- 500B 600B 800B where high static and dynamic dV/dt BTA204S (or BTA204M)- 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 4 4 4 A junction temperature without the aid of ITSM Non-repetitive peak on-state 25 25 25 A a snubber. current PINNING - SOT428 PIN CONFIGURATION SYMBOL PIN Stand