This part is a kind of semiconductor called 2SA771.

Function of this product has (2SA770 / 2SA771) Silicon POwer Transistors.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon PNP Power Transistors 2SA770 2SA771 DESCRIPTION ·With TO-220 package ·Complement to type 2SC1985/1986 ·Low collector saturation voltage APPLICATIONS ·For general and industrial purpose applications PINNING PIN 1 2 3 DESCRIPTION Emitter Collector;connected to mounting base Base Fig.1 simplified outline (TO-220) and symbol Absolute maximum ratings(Ta=25 ) SYMBOL PARAMETER 2SA770 VCBO Collector-base voltage 2SA771 2SA770 VCEO Collector-emitter voltage 2SA771 VEBO IC IB PC Tj Tstg Emitter-base voltage Collector current Base current Collector power dissipation Junction temperature Storage temperature TC=25 Open collector Open base -80 -6 -6 -3 40 150 -55~150 V A A W Open emitter -80 -60 V CONDITIONS VALUE -60 V UN [ ... ]

2SA771 PDF Datasheet Download