This part is a kind of semiconductor called BD233.

Function of this product has EPITAXIAL SILICON POWER TRANSISTORS.

Manufacturers : CDIL

Image and pinout :

Some of the text within the PDF file :

Continental Device India Limited An ISO/TS 16949, ISO 9001 and ISO 14001 Certified Company EPITAXIAL SILICON POWER TRANSISTORS ECB BD233 BD235 BD237 NPN BD234 BD236 BD238 PNP TO126 Plastic Package Intended for use in Medium Power Linear Switching Applications ABSOLUTE MAXIMUM RATINGS DESCRIPTION Collector Base Voltage Collector Emitter Voltage Collector Emitter Voltage (RBE=1KΩ) Emitter Base Voltage Collector Current Collector Peak Current Total Dissipation @ TC=25ºC Total Dissipation @ Ta=25ºC Derate above 25ºC Operating and Storage Junction Temperature Range SYMBOL VCBO VCEO VCER VEBO IC ICM PD PD Tj, Tstg BD233 BD234 45 45 45 BD235 BD236 60 60 60 5.0 2.0 6.0 25 1.25 10 BD237 BD238 100 80 100 - 65 to +150 UNIT V V V V A A W W mW/ ºC ºC THERMAL CHARACTERISTICS Junction [ ... ]

BD233 PDF Datasheet Download