This part is a kind of semiconductor called MJ1000.

Function of this product has (MJ1000 / MJ1001) Complementary Power Darlingtons.

Manufacturers : Comset Semiconductors

Image and pinout :

Some of the text within the PDF file :

NPN MJ1000 – MJ1001 COMPLEMENTARY POWER DARLINGTONS The MJ1000, MJ1001 are silicon epitaxial-bas transistors in monolithic Darlington configuration, and are mounted in JEDEC TO-3 metal case. They are intended for use in power linear and switching applications. Their complementary PNP types are the MJ900 and MJ901 respectively. Compliance to RoHS ABSOLUTE MAXIMUM RATINGS Symbol VCBO VCEO VEBO IC IB PT TJ TS Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current Base Current Power Dissipation Junction Temperature Storage Temperature Ratings MJ1000 MJ1001 MJ1000 MJ1001 MJ1000 MJ1001 MJ1000 MJ1001 MJ1000 MJ1001 MJ1000 MJ1001 MJ1000 MJ1001 MJ1000 MJ1001 Value 60 80 60 80 5.0 8.0 0.1 90 0.515 -65 to +200 Unit V V V A A W W/°C °C IB=0 http://www.DataShe [ ... ]

MJ1000 PDF Datasheet Download