This part is a kind of semiconductor called 2SC4137.

Function of this product has (2SC4137 / 2SC4774 / 2SC4713K) Transistor.

Manufacturers : Rohm

Image and pinout :

Some of the text within the PDF file :

Transistors 2SC4137 2SC4774 / 2SC4713K (96-718-C1 10) (96-183-C1 15) 306 Free Datasheet http://www.net/ [ ... ]

2SC4137 PDF Datasheet Download