This part is a kind of semiconductor called YD1517P.

Function of this product has STEREO POWER AMPLIFIER.

Manufacturers : Wuxi Youda electronics

Image and pinout :

Some of the text within the PDF file :

YOUDA INTEGRATED CIRCUIT YD1517P STEREO POWER AMPLIFIERYD1517P DESCRIPTION The YD1517P is an integrated class-B dual output amplifier in a 18-lead dual in-line (DIP18) plastic medium power 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/stand-by switch *Load dump protection *AC and DC short-circuit-safe to ground and Vcc *Thermally protected *Reverse polarity safe *Capability to handle high energy on outputs (Vcc=0V) *No switch-on/switch-off plop *Protected against electrostatic discharge WuXi YouDa Electronics Co., Ltd Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China Tel: 86-510-85205117 86-51 [ ... ]

YD1517P PDF Datasheet Download