This part is a kind of semiconductor called B1647.

Function of this product has 2SB1647.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Silicon PNP Darlington Power Transistors Product Specification 2SB1647 DESCRIPTION ·With TO-3PN package ·Complement to type 2SD2560 APPLICATIONS ·Audio ,regulator and general purpose PINNING PIN 1 2 3 DESCRIPTION Base Collector;connected to mounting base Emitter Fig.1 simplified outline (TO-3PN) and symbol Absolute maximum ratings(Ta= ) SYMBOL PARAMETER VCBO VCEO Collector-base voltage Collector-emitter voltage VEBO IC IB PC Tj Emitter-base voltage Collector current Base current Collector power dissipation Junction temperature Tstg Storage temperature CONDITIONS Open emitter Open base Open collector TC=25 VALUE -150 -150 -5 -15 -1 130 150 -55~150 UNIT V V V A A W SavantIC Semiconductor Silicon PNP Darlington Power Transistors [ ... ]

B1647 PDF Datasheet Download