This part is a kind of semiconductor called MJ900.
Function of this product has (MJ900 / MJ901) COMPLEMENTARY POWER DARLINGTONS.
Manufacturers : Comset Semiconductors
Image and pinout :
Some of the text within the PDF file :
MJ900 – MJ901 PNP COMPLEMENTARY POWER DARLINGTONS The MJ900, MJ901, MJ1000 and 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 NPN types are the MJ1000 and MJ1001 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 MJ900 MJ901 MJ900 MJ901 MJ900 MJ901 MJ900 MJ901 MJ900 MJ901 MJ900 MJ901 MJ900 MJ901 MJ900 MJ901 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 [ ... ]