This part is a kind of semiconductor called 2SA1075.
Function of this product has POWER TRANSISTOR.
Manufacturers : Inchange Semiconductor
Image and pinout :

Some of the text within the PDF file :
www.net Inchange Semiconductor Product Specification Silicon PNP Power Transistors 2SA1075 2SA1076 DESCRIPTION ·With MT-200 package ·Complement to type 2SC2525,2SC2526 ·Fast switching speed ·Excellent safe operating area APPLICATIONS ·High frequency power amplifiers ·Audio power amplifiers ·Switching regulators ·DC-DC converters PINNING(see Fig.2) PIN 1 2 3 Base Collector;connected to mounting base Emitter Fig.1 simplified outline (MT-200) and symbol DESCRIPTION Absolute maximum ratings(Ta=25℃) SYMBOL PARAMETER 2SA1075 VCBO Collector-base voltage 2SA1076 2SA1075 VCEO Collector-emitter voltage 2SA1076 VEBO IC PC Tj Tstg Emitter-base voltage Collector current Collector power dissipation Junction temperature Storage temperature TC=25℃ Open collector Open base -16 [ ... ]
2SA1075 PDF Datasheet Download
