This part is a kind of semiconductor called D5023.

Function of this product has Silicon NPN transistor epitaxial type.

Manufacturers : PHENITEC

Image and pinout :

Some of the text within the PDF file :

D5023 Silicon NPN transistor epitaxial type D5023 [ Applications ] General purpose [ Feature ] Low collector saturation voltage VCE(sat)= 0.8V(Max.) at IC= 2A, IB= 0.2A [ Absolute maximum ratings (Ta=25C) ] Characteristic Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Junction temperature Storage temperature Symbol Maximum ratings VCBO 40 VCEO 32 VEBO 5 IC 2 Tj 150 Tstg -55 to 150 Unit V V V A C C [ Electrical characteristics (Ta=25C) ] Characteristic 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 Collector output capacitance Symbol BVCBO BVCEO BVEBO ICBO IEBO hFE VCE(sat [ ... ]

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