This part is a kind of semiconductor called TDA7263M.

Function of this product has 12+12W STEREO AMPLIFIER WITH MUTING.

Manufacturers : ST Microelectronics

Image and pinout :

Some of the text within the PDF file :

TDA7263M 12 +12W STEREO AMPLIFIER WITH MUTING WIDE SUPPLY VOLTAGE RANGE HIGH OUTPUT POWER 12+12W @ VS=28V, RL = 8Ω, THD=10% MUTE FACILITY (POP FREE) WITH LOW CONSUMPTION AC SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION DESCRIPTION The TDA7263M is class AB dual audio power amplifier assembled in the Multiwatt package, specially designed for high quality sound application as HI-FI music centers and stereo TV sets. Multiwatt11 ORDERING NUMBER:TDA7263M APPLICATION CIRCUIT March 1995 1/7 TDA7263M ABSOLUTE MAXIMUM RATINGS Symbol VS IO IO Ptot Top Tstg,Tj Supply Voltage Output Peak Current (repetitive f >20Hz) Output Peak Current (non repetitive, t = 100µs) Total Power Dissipation (Tcase = 70°C) Operating Temperature Range Storage & Junction Temperature Parameter Value 35 2.5 3.5 [ ... ]

TDA7263M PDF Datasheet Download