This part is a kind of semiconductor called BC547B.
Function of this product has NPN general purpose transistors.
Manufacturers : NXP
Image and pinout :
Some of the text within the PDF file :
BC847/BC547 series 45 V, 100 mA NPN general-purpose transistors Rev. 07 10 December 2008 Product data sheet 1. Product proﬁle 1.1 General description NPN general-purpose transistors in small plastic packages. Table 1. Product overview Type number Package NXP BC847 SOT23 BC847A BC847B BC847B/DG BC847C BC847W SOT323 BC847AW BC847BW BC847BW/DG BC847CW BC847T SOT416 BC847AT BC847AT/DG BC847BT BC847CT BC847AM SOT883 BC847BM BC847CM BC547 SOT54 BC547B BC547C JEITA - SC-70 SC-75 SC-101 SC-43A JEDEC TO-236AB - - TO-92  /DG: halogen-free  Also available in SOT54A and SOT54 variant packages (see Section 2). PNP complement BC857 BC857A BC857B BC857C BC857W BC857AW BC857BW BC857CW BC857T BC857AT BC857BT BC857CT BC857AM BC857BM BC857CM BC55 [ ... ]
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