This part is a kind of semiconductor called BT136-600.

Function of this product has Triacs.

Manufacturers : TGS

Image and pinout :

Some of the text within the PDF file :

TIGER ELECTRONIC CO.,LTD BT136-600 GENERAL DESCRIPTION Passivated, sensitive gate triacs in a plastic envelope, intended for use in general purpose bidirectional switching and phase control applications, where high sensitivity is required in all four quadrants. ABSOLUTE MAXIMUM RATINGS ( Ta = 25 OC) Parameter Symbol Typ Unit Repetitive peak off-state voltages RMS on-state current Non-repetitive peak on-state current Max. Operating Junction Temperature Storage Temperature VDRM VRRM IT(RMS) ITSM 600 4.0 25 V A A Tj 110 oC Tstg -45~150 oC TO-220 ELECTRICAL CHARACTERISTICS ( Ta = 25 OC) Parameter Symbol Test Conditions Min Typ Max Unit Repetitive peak off-state voltages RMS on-state current On-state voltage Holding current T2+G+ Gate trigger current T2+GT2-G- T2-G+ T2+G+ [ ... ]

BT136-600 PDF Datasheet Download