This part is a kind of semiconductor called APM1105NFP.
Function of this product has N-Channel Enhancement Mode MOSFET.
Manufacturers : Sinopower
Image and pinout :

Some of the text within the PDF file :
APM1105NFP Features • 100V/16A, RDS(ON)= 80mΩ(typ.) @ VGS= 10V R= DS(ON) 130mΩ(typ.) @ V= GS 4.5V • ESD Protected • Reliable and Rugged • Lead Free and Green Devices Available (RoHS Compliant) Applications • Power Management in TV Inverter. N-Channel Enhancement Mode MOSFET Pin Description SDG Top View of TO-220-FP D G S N-Channel MOSFET Ordering and Marking Information APM1105N Assembly Material Handling Code Temperature Range Package Code Package Code FP : TO-220-FP Operating Junction Temperature Range C : -55 to 175 oC Handling Code TU : Tube Assembly Material G : Halogen and Lead Free Device APM1105N FP : APM1105N XXXXX XXXXX - Date Code Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination [ ... ]
APM1105NFP PDF Datasheet Download
