This part is a kind of semiconductor called TA8210AH.

Function of this product has 20W BTL x 2CH AUDIO POWER AMPLIFIER.

Manufacturers : Toshiba

Image and pinout :

Some of the text within the PDF file :

TA8210AH / AL TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA8210AH,TA8210AL 20W BTL × 2ch Audio Power Amplifier The thermal resistance θj−T of TA8210AH, TA8210AL package designed for low thermal resistance, has a high efficiency of heat radiation. The temperature rise of chip can be reduced, and the influence from the degradation of the features due to the temperature rise at the high output can also be reduced. This stereo audio power IC, designed for car audio use, has two built−in channels to reduce the characteristic difference between L and R channels. In addition, the functions of stand−by and muting, and a variety of protection circuits are involved. Features · Low thermal resistance : θj−T = 1.5°C / W (infinite heat sink) · High power : POUT (1) [ ... ]

TA8210AH PDF Datasheet Download