This part is a kind of semiconductor called TDA2611.

Function of this product has 5 W audio power amplifier.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

INTEGRATED CIRCUITS DATA SHEET TDA2611A 5 W audio power amplifier Product specification File under Integrated Circuits, IC01 November 1982 Philips Semiconductors Product specification 5 W audio power amplifier TDA2611A The TDA2611A is a monolithic integrated circuit in a 9-lead single in-line (SIL) plastic package with a high supply voltage audio amplifier. Special features are: • possibility for increasing the input impedance • single in-line (SIL) construction for easy mounting • very suitable for application in mains-fed apparatus • extremely low number of external components • thermal protection • well defined open loop gain circuitry with simple quiescent current setting and fixed integrated closed loop gain. QUICK REFERENCE DATA Supply voltage range Repetitive p [ ... ]

TDA2611 PDF Datasheet Download