This part is a kind of semiconductor called TDA2040.

Function of this product has 20W Hi-Fi AUDIO POWER AMPLIFIER.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

TDA2040 20W Hi-Fi AUDIO POWER AMPLIFIER DESCRIPTION The TDA2040 is a monolithic integrated circuit in Pentawatt ® package,intended for use as an audio class AB amplifier. Typically it provides 22W output power (d = 0.5%) at Vs = 32V/4Ω . The TDA2040 provides high output current and has very low harmonic and cross-over distortion. Further the device incorporates a patented short circuit protection system comprising an arrangement for automatically limiting the dissipated power so as to keep the working point of the output transistors within their safe operating area. A thermal shut-down system is also included. TEST CIRCUIT PENTAWATT ORDERING NUMBER : TDA2040V December 1995 1/13 TDA2040 SCHEMATIC DIAGRAM PIN CONNECTION THERMAL DATA Symbol Rth j-case Parameter Thermal Resistance Jun [ ... ]

TDA2040 PDF Datasheet Download