This part is a kind of semiconductor called B642.

Function of this product has 2SB642.

Manufacturers : Panasonic Semiconductor

Image and pinout :

Some of the text within the PDF file :

Transistor 2SB642 Silicon PNP epitaxial planer type For low-power general amplification s Features q High foward current transfer ratio hFE. q M type package allowing easy automatic and manual insertion as well as stand-alone fixing to the printed circuit board. s Absolute Maximum Ratings (Ta=25˚C) Parameter Collector to base voltage Collector to emitter voltage Emitter to base voltage Peak collector current Collector current Collector power dissipation Junction temperature Storage temperature Symbol VCBO VCEO VEBO ICP IC PC Tj Tstg Ratings –60 –50 –7 –200 –100 400 150 –55 ~ +150 Unit V V V mA mA mW ˚C ˚C 6.9±0.1 1.5 1.5 R0.9 R0.9 Unit: mm 2.5±0.1 1.0 1.0 4.5±0.1 4.1±0.2 1.25±0.05 2.4±0.2 2.0±0.2 3.5±0.1 1.0±0.1 0.4 R0.7 0.85 0.55±0.1 321 0.45±0.05 [ ... ]

B642 PDF Datasheet Download