This part is a kind of semiconductor called A1015.

Function of this product has PNP EPITAXIAL SILICON TRANSISTOR.

Manufacturers : Unisonic Technologies

Image and pinout :

Some of the text within the PDF file :

UTC 2SA1015 PNP EPITAXIAL SILICON TRANSISTOR LOW FREQUENCY PNP AMPLIFIER TRANSISTOR FEATURES *Collector-Emitter Voltage: BVCEO=-50V *Collector current up to 150mA *High hFE linearity *Complement to 2SC1815 1 TO-92 1:EMITTER 2:COLLECTOR 3: BASE ABSOLUTE MAXIMUM RATINGS ( Ta=25°C ,unless otherwise specified ) PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector dissipation Collector current Base current Junction Temperature Storage Temperature SYMBOL VCBO VCEO VEBO Pc Ic IB Tj TSTG RATING -50 -50 -5 400 -150 -50 125 -65 ~ +150 UNIT V V V mW mA mA °C °C ELECTRICAL CHARACTERISTICS(Ta=25°C,unless otherwise specified) PARAMETER Collector-base breakdown voltage Collector-emitter breakdown voltage Emitter-base breakdown voltage Collector cut-off c [ ... ]

A1015 PDF Datasheet Download