This part is a kind of semiconductor called BC450.

Function of this product has PNP SILICON PLANAR EPITAXIAL TRANSISTORS.

Manufacturers : CDIL

Image and pinout :

Some of the text within the PDF file :

Continental Device India Limited An IS/ISO 9002 and IECQ Certified Manufacturer PNP SILICON PLANAR EPITAXIAL TRANSISTORS IS/ISO 9002 Lic# QSC/L- 000019.2 BC 446, A, B BC 448, A, B BC 450, A, B TO-92 Plastic Package General Purpose High Voltage Transistors. ABSOLUTE MAXIMUM RATINGS (Ta=25ºC unless specified otherwise) DESCRIPTION SYMBOL TEST CONDITION MIN Collector Emitter Voltage VCEO 60 Collector Base Voltage VCBO 60 Emitter Base Voltage VEBO 5 Collector Current Continuous IC 300 Total Device Dissipation@ Ta=25ºC PD Derate Above 25ºC Total Device Dissipation@ Tc=25ºC PD Derate Above 25ºC Operating And Storage Junction Tj, Tstg Temperature Range TYP 80 80 5 625 5 1.5 12 -55 to +150 MAX 100 100 5 THERMAL RESISTANCE Junction to ambient Junction to case Rth [ ... ]

BC450 PDF Datasheet Download