This part is a kind of semiconductor called TDA2008.
Function of this product has 12W AUDIO AMPLIFIER Vs = 22V/ RL= 4ohm.
Manufacturers : ST Microelectronics
Image and pinout :

Some of the text within the PDF file :
TDA2008 12W AUDIO AMPLIFIER (Vs = 22V, RL = 4Ω) DESCRIPTION The TDA2008 is a mololithic class B audio power amplifier in Pentawatt® package designed for driving low impedence loads (down to 3.2Ω). The divice provides a high output current capability(up to 3A), very low harmonic and crossover distortion. In addition,the device offers the following features: – very low number of external components; – assembly ease, due to Pentawatt® power package with no electrical insulations requirements; – space and cost saving; – high reliability; – flexibility in use; – thermal protection. Pentawatt ORDERING NUMBER : TDA 2008V TYPICAL APPLICATION CIRCUIT March 1993 1/9 TDA2008 PIN CONNECTION (top view) ABSOLUTE MAXIMUM RATINGS Symbol Vs Io Io Ptot Tstg, Tj DC supply voltage Out [ ... ]
TDA2008 PDF Datasheet Download
