This part is a kind of semiconductor called MJ1000.

Function of this product has (MJ1000 / MJ1001) SILICON POWER TRANSISTOR.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon NPN Power Transistors MJ1000/1001 DESCRIPTION ·With TO-3 package ·DARLINGTON ·High DC current gain ·Complement to type MJ900/901 APPLICATIONS ·For use as output devices in complementary general purpose amplifier applications PINNING(see Fig.2) PIN 1 2 3 Base Emitter Fig.1 simplified outline (TO-3) and symbol Collector DESCRIPTION ABSOLUTE MAXIMUM RATINGS(TC=25 ) SYMBOL PARAMETER MJ1000 VCBO Collector-base voltage MJ1001 MJ1000 VCEO Collector-emitter voltage MJ1001 VEBO IC IB PD Tj Tstg Emitter-base voltage Collector current Base current Total power dissipation Junction temperature Storage temperature TC=25 Open collector Open base 80 5 10 0.1 90 200 -55~200 V A A W Open emitter 80 60 V CONDITIONS VALUE 60 V [ ... ]

MJ1000 PDF Datasheet Download