This part is a kind of semiconductor called CD1517.
Function of this product has 2 X 6 W stereo power amplifier.
Manufacturers : Long-Semi
Image and pinout :

Some of the text within the PDF file :
1517 LINEAR INTEGRATED CIRCUIT 2×6 W stereo power amplifier DESCRIPTION The CD1517 is an integrated class-B dual output amplifier in a plastic single in-line medium power package with fin and a plastic heat-dissipating dual in-line package. The device is primarily developed for multi-media applications. FEATURES Requires very few external components High output power Fixed gain Good ripple rejection Mute/standby switch AC and DC short-circuit safe to ground and VP Thermally protected Reverse polarity safe Capability to handle high energy on outputs (VP = 0 V) No switch-on/switch-off plop Electrostatic discharge protection. QUICK REFERENCE DATA SYMBOL VP IORM Iq(tot) Isb Isw |ZI| Po SVRR cs Gv Vno(rms) Tc PARAMETER supply voltage repetitive peak output current total quiescent current s [ ... ]
CD1517 PDF Datasheet Download
