This part is a kind of semiconductor called BTA06-600BWRG.

Function of this product has SNUBBERLESS/ LOGIC LEVEL & STANDARD.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

® BTA/BTB06 Series 6A TRIACS SNUBBERLESS™, LOGIC LEVEL & STANDARD MAIN FEATURES: Symbol IT(RMS) VDRM/VRRM IG (Q1) Value 6 600 and 800 5 to 50 Unit A V G A2 A1 A2 mA DESCRIPTION Suitable for AC switching operations, the BTA/ BTB06 series can be used as an ON/OFF function in applications such as static relays, heating regulation, induction motor starting circuits... or for phase control in light dimmers, motor speed controllers,... The snubberless and logic level versions (BTA/ BTB...W) are specially recommended for use on inductive loads, thanks to their high commutation performances. By using an internal ceramic pad, the BTA series provides voltage insulated tab (rated at 2500V RMS) complying with UL standards (File ref.: E81734) ABSOLUTE MAXIMUM RATINGS Symbol IT(RMS) Parameter [ ... ]

BTA06-600BWRG PDF Datasheet Download