This part is a kind of semiconductor called A1909.

Function of this product has 2SA1909.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Silicon PNP Power Transistors DESCRIPTION ·With TO-3PML package ·Complement to type 2SC5101 APPLICATIONS ·Audio and general purpose PINNING PIN 1 2 3 DESCRIPTION Emitter Collector Base Product Specification 2SA1909 Fig.1 simplified outline (TO-3PML) and symbol Absolute maximum ratings(Tc=25 ) SYMBOL PARAMETER VCBO VCEO VEBO IC IB PC Tj Tstg Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Base current Collector power dissipation Junction temperature Storage temperature CONDITIONS Open emitter Open base Open collector TC=25 VALUE -140 -140 -6 -10 -4 80 150 -55~150 UNIT V V V A A W 1 SavantIC Semiconductor Silicon PNP Power Transistors Product Specification 2SA1909 CHARAC [ ... ]

A1909 PDF Datasheet Download