This part is a kind of semiconductor called BCP53.

Function of this product has MEDIUM POWER AMPLIFIER.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

BCP52/53 MEDIUM POWER AMPLIFIER ADVANCE DATA s s s s SILICON EPITAXIAL PLANAR PNP TRANSISTORS MINIATURE PLASTIC PACKAGE FOR APPLICATION IN SURFACE MOUNTING CIRCUITS GENERAL PURPOSE MAINLY INTENDED FOR USE IN MEDIUM POWER INDUSTRIAL APPLICATION AND FOR AUDIO AMPLIFIER OUTPUT STAGE NPN COMPLEMENTS ARE BCP55 AND BCP56 RESPECTIVELY 2 1 SOT-223 2 3 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol V CBO V CEO V CER V EBO IC I CM IB I BM P tot T stg Tj Parameter BCP52 Collector-Base Voltage (I E = 0) Collector-Emitter Voltage (I B = 0) Collector-Emitter Voltage (R BE = 1K Ω ) Emitter-Base Voltage (I C = 0) Collector Current Collector Peak Current (t p < 5 ms) Base Current Base Peak Current (t p < ms) Total Dissipation at T c = 25 o C Storage Temperature Max. Operating Juncti [ ... ]

BCP53 PDF Datasheet Download