This part is a kind of semiconductor called 2SB449.

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 PNP Power Transistors 2SB449 DESCRIPTION ·With TO-3 package ·Low collector saturation voltage ·Wide area of safe operation APPLICATIONS ·Power amplifier applications ·Power switching applications ·DC-DC converters 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 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=50 Open emitter Open base Open collector CONDITIONS VALUE -50 -50 -7 -3.5 22.5 150 -55~150 UNIT V V V A W SavantIC Semiconductor Product [ ... ]

2SB449 PDF Datasheet Download