This part is a kind of semiconductor called FDS8884.
Function of this product has N-Channel MOSFET.
Manufacturers : Fairchild Semiconductor
Image and pinout :

Some of the text within the PDF file :
FDS8884 N-Channel PowerTrench® MOSFET February 2006 FDS8884 N-Channel PowerTrench® MOSFET 30V, 8.5A, 23mΩ General Descriptions This N-Channel MOSFET has been designed specifically to improve the overall efficiency of DC/DC converters using either synchronous or conventional switching PWM controllers. It has been optimized for low gate charge, low rDS(on) and fast switching speed. A REE I DF Features Max rDS(on) = 23mΩ at VGS = 10V, ID = 8.5A Max rDS(on) = 30mΩ at VGS = 4.5V, ID = 7.5A Low gate charge 100% RG Tested RoHS Compliant M ENTATIO LE N MP LE D D D D 5 6 7 8 4 3 2 1 SO-8 S S S G MOSFET Maximum Ratings Symbol VDS VGS ID EAS PD TJ, TSTG Drain to Source Voltage Gate to Source Voltage Drain Current Continuous Pulsed TA = 25° [ ... ]
FDS8884 PDF Datasheet Download
