MJ3000 Datasheet PDF - Comset Semiconductors

COMPLEMENTARY POWER DARLINGTONS

The MJ2500, and MJ2501 are silicon epitaxial-base PNP power transistors in monolithic Darlington configuration and are mounted in Jedec TO-3 metal case.
They are intented for use in power linear and switching applications.

The complementary NPN types are the MJ3000 and MJ3001 respectively.