This part is a kind of semiconductor called BDT64C.

Function of this product has Silicon Darlington Power Transistor.

Manufacturers : Comset Semiconductors

Image and pinout :

Some of the text within the PDF file :

SEMICONDUCTORS BDT64-A-B-C SILICON DARLINGTON POWER TRANSISTORS PNP epitaxial-base transistors in a monolithic Dalrington circuit and housed in a TO-220 enveloppe. They are intended for output stages in audio equipment, general amplifiers, and analogue switching application. PNP complements are BDT65-A-B-C Compliance to RoHS. ABSOLUTE MAXIMUM RATINGS Symbol Ratings BDT65 BDT65A BDT65B BDT65C BDT65 BDT65A BDT65B BDT65C BDT65 BDT65A BDT65B BDT65C BDT65 BDT65A BDT65B BDT65C BDT65 BDT65A BDT65B BDT65C Value -60 -80 -100 -120 -60 -80 -100 -120 Unit VCBO Collector-Base Voltage www.DataSheet.net/ V VCEO Collector-Emitter Voltage V VEBO Emitter-Base Voltage -5 V IC Collector Current -12 A ICM Collector Peak Current -20 A 26/09/2012 COMSET SEMICONDUCTORS 1|5 Datasheet p [ ... ]

BDT64C PDF Datasheet Download