This part is a kind of semiconductor called C2579.

Function of this product has 2SC2579.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon NPN Power Transistors 2SC2579 DESCRIPTION ·With TO-3PN package ·High power dissipation ·High current capability APPLICATIONS ·For audio frequency power amplifier applications 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 PC Tj Tstg PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Collector power dissipation Junction temperature Storage temperature TC=25 CONDITIONS Open emitter Open base Open collector VALUE 160 160 6 8 80 150 -55~150 UNIT V V V A W SavantIC Semiconductor Product Specification Silicon NPN Power Transistors 2S [ ... ]

C2579 PDF Datasheet Download