STK2250 PDF datasheet can download.
This product has (STKxxxx) Output Stage of AF Power Amp functions.
This is one of the semiconductor types. This part name is STK2250.
Manufacturers of the product is ETC.
Image and pinout :
Some of the text files within the PDF file
w w w .D at aS he et 4U .c om [ … ]
Please refer to the file for details.