This part is a kind of semiconductor called BC184A.
Function of this product has NPN SILICON PLANAR EPITAXIAL 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 NPN SILICON PLANAR EPITAXIAL TRANSISTORS CB E BC182, A, B BC183, A, B, C BC184, B, C TO-92 Plastic Package For Lead Free Parts, Device Part # will be Prefixed with "T" Amplifier Transistors ABSOLUTE MAXIMUM RATINGS (Ta=25ºC) DESCRIPTION SYMBOL Collector Emitter Voltage VCEO Collector Base Voltage VCBO Emitter Base Voltage VEBO Collector Current Continuous IC Power Dissipation at Ta=25ºC PD Derate Above 25ºC Power Dissipation at Tc=25ºC PD Derate Above 25ºC Operating And Storage Junction Temperature Range Tj, Tstg BC182 50 60 BC183 30 45 6.0 100 350 2.8 1.0 8.0 - 55 to +150 THERMAL RESISTANCE Junction to Case Junction to Ambient in free air Rth (j-c) Rth (j-a) 125 357 E [ ... ]
BC184A PDF Datasheet Download
