This part is a kind of semiconductor called BU326.

Function of this product has SILICON POWER TRANSISTOR.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon NPN Power Transistors BU326 BU326A DESCRIPTION ·With TO-3 package ·High voltage;high speed ·Low collector saturation voltage. APPLICATIONS ·Intended for operating in CTV receiver’s chopper supplies. PINNING(see fig.2) PIN 1 2 3 Base Emitter Collector Fig.1 simplified outline (TO-3) and symbol DESCRIPTION Absolute maximum ratings (Tc=25 ) SYMBOL PARAMETER BU326 VCBO Collector-base voltage BU326A BU326 VCEO Collector-emitter voltage BU326A VEBO IC ICM IB PT Tj Tstg Emitter-base voltage Collector current Collector current-peak Base current Total power dissipation Junction temperature Storage temperature TC=25 Open collector Open base 400 10 6 8 3 75 -65~200 -65~200 V A A A W Open emitter 900 375 V CONDITIONS [ ... ]

BU326 PDF Datasheet Download