This part is a kind of semiconductor called 2SA747A.

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 2SA747A DESCRIPTION ·With TO-3 package ·Wide area of safe operation ·Complement to type 2SC1116A APPLICATIONS ·For audio and general purpose applications PINNING(see Fig.2) PIN 1 2 3 Base Emitter Fig.1 simplified outline (TO-3) and symbol Collector DESCRIPTION Absolute maximum ratings(Ta=℃) SYMBOL VCBO VCEO VEBO IC IB B PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Base current Collector power dissipation Junction temperature Storage temperature TC=25℃ Open emitter Open base Open collector CONDITIONS VALUE -140 -140 -6 -10 -4 100 150 -65~150 UNIT V V V A A W ℃ ℃ PC Tj Tstg Inchange Semiconductor Product Specification Si [ ... ]

2SA747A PDF Datasheet Download