This part is a kind of semiconductor called 2SA1106.

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 2SA1106 DESCRIPTION ·With TO-3PN package ·High frequency ·Complement to type 2SC2581 APPLICATIONS ·Audio power amplifer applications ·DC-DC converters PINNING PIN 1 2 3 Base Collector;connected to mounting base Emitter Fig.1 simplified outline (TO-3PN) and symbol 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 CONDITIONS VALUE -140 -140 -6 -10 -4 100 150 -55~150 UNIT V V V A A W ℃ ℃ Open collector PC Tj Tstg Inchange Semiconductor Product [ ... ]

2SA1106 PDF Datasheet Download