This part is a kind of semiconductor called BT139-800.

Function of this product has Triacs logic level.

Manufacturers : EAST SEMICONDUCTOR

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EAST SEMICONDUCTOR Triacs logic level GENERAL DESCRIPTION Passivated, sensitive gate triac in a plastic envelope, intended for use in general purpose bidirectional switching and phase control applications. This device is intended to be interfaced directly to microcontrollers, logic integrated circuits and other low power gate trigger circuits. ABSOLUTE MAXIMUM RATINGS ( Ta = 25℃ ) 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 800 16.0 140 V A A Tj 110 ℃ Tstg -45~150 ℃ 123 1: T1 2: T2 3: G Tab:T2 Product specification BT139-800 TO-220 ELECTRICAL CHARACTERISTICS ( Ta = 25℃ ) Parameter Symbol Test Conditions Min Typ Max [ ... ]

BT139-800 PDF Datasheet Download