Part Number : 204S8E
Function :3Q Hi-Com Triac / Triac BTA204S-800E SOT-252 marking 204S8E
Manufacturer : NXP Semiconductors.
Pinout : 
Description
Planar passivated high commutation three quadrant triac in a SOT428 (DPAK) surface-mountable plastic package. This “series E” triac balances the requirements of commutation performance and gate sensitivity and is intended for interfacing with low power drivers and logic ICs including microcontrollers.
Datasheet PDF Download
Other datasheets in the file : 204S8E, BTA204S-800E