This part is a kind of semiconductor called C710.

Function of this product has Small Signal Transistor.

Manufacturers : Mitsubishi

Image and pinout :

Some of the text within the PDF file :

Free Datasheet http://www.datasheet-pdf.com/ Free Datasheet http://www.datasheet-pdf.com/ Free Datasheet http://www.datasheet-pdf.com/ Free Datasheet http://www.datasheet-pdf.com/ Free Datasheet http://www.datasheet-pdf.com/ [ ... ]

C710 PDF Datasheet Download