This part is a kind of semiconductor called FDT1600N10ALZ.
Function of this product has MOSFET.
Manufacturers : Fairchild Semiconductor
Image and pinout :

Some of the text within the PDF file :
FDT1600N10ALZ N-Channel PowerTrench® MOSFET FDT1600N10ALZ N-Channel PowerTrench® MOSFET 100 V, 5.6 A, 160 mΩ November 2013 Features • RDS(on) = 121 mΩ (Typ.) @ VGS = 10 V, ID = 2.8 A • RDS(on) = 156 mΩ (Typ.) @ VGS = 5 V, ID = 1.8 A • Low Gate Charge (Typ. 2.9 nC) • Low Crss (Typ. 2.04 pF) • Fast Switching • 100% Avalanche Tested • Improved dv/dt Capability • RoHS Compliant Description This N-Channel MOSFET is produced using Fairchld Semiconductor’s advanced PowerTrench® process that has been tailored to minimize the on-state resistance and maintain superior switching performance. Application • Consumer Appliances • LED TV and Monitor • Synchronous Rectification • Uninterruptible Power Supply • Micro Solar Inverter D D SOT-223 S D G GDS MOSFET [ ... ]
FDT1600N10ALZ PDF Datasheet Download
