This part is a kind of semiconductor called 2N4399.

Function of this product has (2N4398 / 2N4399) Silicon PNP Power Transistors.

Manufacturers : Inchange Semiconductor

Image and pinout :

Some of the text within the PDF file :

Inchange Semiconductor Product Specification Silicon PNP Power Transistors DESCRIPTION ¡¤ With TO-3 package ¡¤ Complement to type 2N5301/5302/5303 ¡¤ Low collector saturation voltage ¡¤ Excellent safe operating area APPLICATIONS ¡¤ For use in power amplifier and switching circuits applications. PINNING PIN 1 2 3 Base Emitter DESCRIPTION 2N4398 2N4399 2N5745 Fig.1 simplified outline (TO-3) and symbol Collector Absolute maximum ratings(Ta=¡æ ) SYMBOL PARAMETER 2N4398 VCBO Collector-base voltage 2N4399 2N5745 2N4398 VCEO Collector-emitter voltage 2N4399 2N5745 VEBO IC IB PD Tj Tstg Emitter-base voltage 2N4398/4399 Collector current 2N5745 Base current Total power dissipation Junction temperature Storage temperature TC=25¡æ -20 -7.5 200 200 -65~200 ¡æ ¡æ A W Open collect [ ... ]

2N4399 PDF Datasheet Download