This part is a kind of semiconductor called STR-W6253.

Function of this product has Hybrid IC.

Manufacturers : Sanken

Image and pinout :

Some of the text within the PDF file :

www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com www.datasheet4u.com [ ... ]

STR-W6253 PDF Datasheet Download