This part is a kind of semiconductor called BC817-16.

Function of this product has NPN Silicon AF Transistors.

Manufacturers : Siemens Semiconductor Group

Image and pinout :

Some of the text within the PDF file :

NPN Silicon AF Transistors BC 817 BC 818 q q q q q For general AF applications High collector current High current gain Low collector-emitter saturation voltage Complementary types: BC 807, BC 808 (PNP) Type BC 817-16 BC 817-25 BC 817-40 BC 818-16 BC 818-25 BC 818-40 Marking 6As 6Bs 6Cs 6Es 6Fs 6Gs Ordering Code Q62702-C1732 Q62702-C1690 Q62702-C1738 Q62702-C1739 Q62702-C1740 Q62702-C1505 Pin Configuration 1 2 3 B E C Package1) SOT-23 1) For detailed information see chapter Package Outlines. Semiconductor Group 1 07.94 BC 817 BC 818 Maximum Ratings Parameter Collector-emitter voltage Collector-base voltage Emitter-base voltage Collector current Peak collector current Base current Peak base current Junction temperature Storage temperature range Thermal Resistance Junction - a [ ... ]

BC817-16 PDF Datasheet Download