This part is a kind of semiconductor called TDA2030A.

Function of this product has 18W Hi-Fi AMPLIFIER AND 35W DRIVER.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

TDA2030A 18 W hi-fi amplifier and 35 W driver Features ■ Output power 18 W at VS = ±16 V / 4 Ω with 0.5% distortion ■ High output current )■ Very low harmonic and crossover distortion t(s■ Short-circuit protection uc■ Thermal shutdown rodDescription te PThe TDA2030A is a monolithic IC in a Pentawatt package intended for use as a low-frequency leclass-AB amplifier. soWith VS max = 44 V it is particularly suited for more breliable applications without regulated supply and Ofor 35 W driver circuits using low-cost t(s) -complementary pairs. Pentawatt (vertical) The TDA2030A provides high output current and has very low harmonic and crossover distortion. The device incorporates a short-circuit protection system comprising an arrangement for automatically limiting the dissipated [ ... ]

TDA2030A PDF Datasheet Download