This part is a kind of semiconductor called 2SD2114.

Function of this product has NPN Transistor.

Manufacturers : JinYu

Image and pinout :

Some of the text within the PDF file :

TRANSISTOR (NPN) FEATURES z High DC current gain. z High emitter-base voltage. z Low VCE (sat). MARKING: BBV,BBW MAXIMUM RATINGS (TA=25℃ unless otherwise noted) Symbol VCBO VCEO VEBO IC PC Tj Tstg Parameter Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current -Continuous Collector Power Dissipation Junction Temperature Storage Temperature Value 25 20 12 0.5 0.25 150 -55-150 Units V V V A W ℃ ℃ 2SD2114 SOT-23 1. BASE 2.EMITTER 3.COLLECTOR ELECTRICAL CHARACTERISTICS (Tamb=25℃ unless otherwise specified) Parameter Collector-base breakdown voltage Collector-emitter breakdown voltage Emitter-base breakdown voltage Collector cut-off current Emitter cut-off current DC current gain Collector-emitter saturation voltage Transition frequency output [ ... ]

2SD2114 PDF Datasheet Download