This part is a kind of semiconductor called B596.
Function of this product has 2SB596.
Manufacturers : Mospec Semiconductor
Image and pinout :

Some of the text within the PDF file :
A Free Datasheet http://www.datasheet-pdf.com/ A Free Datasheet http://www.datasheet-pdf.com/ A Free Datasheet http://www.datasheet-pdf.com/ [ ... ]
B596 PDF Datasheet Download
