This part is a kind of semiconductor called 2SC1079.
Function of this product has (2SC1079 / 2SC1080) SILICON POWER TRANSISTOR.
Manufacturers : SavantIC
Image and pinout :

Some of the text within the PDF file :
SavantIC Semiconductor Product Specification Silicon NPN Power Transistors 2SC1079 2SC1080 DESCRIPTION ·With TO-3 package ·Complement to type 2SA679/680 ·High power dissipation APPLICATIONS ·For audio power amplifier applications PINNING(see Fig.2) PIN 1 2 3 Base Emitter Collector Fig.1 simplified outline (TO-3) and symbol DESCRIPTION Absolute maximum ratings(Ta=? ) SYMBOL PARAMETER 2SC1079 VCBO Collector-base voltage 2SC1080 2SC1079 VCEO Collector-emitter voltage 2SC1080 VEBO IC IE PC Tj Tstg Emitter-base voltage Collector current Emitter current Collector power dissipation Junction temperature Storage temperature TC=25? Open collector Open base 100 5 12 -12 100 150 -65~150 V A A W ? ? Open emitter 100 120 V CONDITIONS VALUE 120 V UNIT SavantIC Semiconductor [ ... ]
2SC1079 PDF Datasheet Download
