This part is a kind of semiconductor called BD712.

Function of this product has COMPLEMENTARY SILICON POWER TRANSISTORS.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

® BD707/709/711 BD708/712 COMPLEMENTARY SILICON POWER TRANSISTORS s COMPLEMENTARY PNP - NPN DEVICES APPLICATION s LINEAR AND SWITCHING INDUSTRIAL EQUIPMENT DESCRIPTION The BD707, BD709 and BD711 are silicon Epitaxial-Base NPN power transistors in Jedec TO-220 plastic package. They are intented for use in power linear and switching applications. The BD707 and BD711 complementary PNP types are BD708 and BD712 respectively. 1 2 3 TO-220 INTERNAL SCHEMATIC DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol Parameter NPN PNP V CBO VCER V CEO VEBO IC ICM IB P tot Ts tg Tj Collector-Base Voltage (IE = 0) Collector-Emitter Voltage (VBE = 0) Collector-Emitter Voltage (IB = 0) Emitter-Base Voltage (I C = 0) Collector Current Collector Peak Current Base Current T otal Dissipation at Tc ≤ 25 o C Sto [ ... ]

BD712 PDF Datasheet Download