COMPLEMENTARY SILICON POWER DARLINGTON TRANSISTORS

The BDX53B and BDX53C are silicon Epitaxial-Base NPN power transistors in monolithic Darlington configuration mounted in Jedec TO-220 plastic package. They are intented for use in hammer drivers, audio amplifiers and other medium power linear and switching applications.
The complementary PNP types are BDX54B and BDX54C respectively.