This part is a kind of semiconductor called STK4121II.

Function of this product has (STK4101 II Series) 2-CHANNEL AF POWER AMP.

Manufacturers : ETC

Image and pinout :

STK4121II image and datasheet pinout



Some of the text within the PDF file :

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STK4121II PDF Datasheet Download

2017/10/10 05:11 2017/10/10 05:11