This part is a kind of semiconductor called 2SB621A.

Function of this product has Silicon PNP epitaxial planer type(For low-frequency output amplification).

Manufacturers : Panasonic Semiconductor

Image and pinout :

Some of the text within the PDF file :

Transistor 2SB621, 2SB621A Silicon PNP epitaxial planer type For low-frequency output amplification Complementary to 2SD592 and 2SD592A 5.0±0.2 Unit: mm 4.0±0.2 q q Low collector to emitter saturation voltage VCE(sat). High transition frequency fT. (Ta=25˚C) Ratings –30 –60 –25 –50 –5 –1.5 –1 750 150 –55 ~ +150 Unit V s Absolute Maximum Ratings Parameter Collector to base voltage Collector to 2SB621 2SB621A 2SB621 VCBO VCEO VEBO ICP IC PC Tj Tstg Symbol 13.5±0.5 5.1±0.2 s Features 0.45 –0.1 +0.2 0.45 –0.1 1.27 +0.2 emitter voltage 2SB621A Emitter to base voltage Peak collector current Collector current Collector power dissipation Junction temperature Storage temperature V V A A mW ˚C ˚C 1.27 1 2 3 2.3±0.2 2.54±0.15 1:Emitter 2:Collector 3:Bas [ ... ]

2SB621A PDF Datasheet Download