This part is a kind of semiconductor called APM4010NU.

Function of this product has N-Channel Enhancement Mode MOSFET.

Manufacturers : ANPEC

Image and pinout :

Some of the text within the PDF file :

APM4010NU N-Channel Enhancement Mode MOSFET Features • 40V/57A, RDS(ON)=8.2mΩ (typ.) @ VGS=10V RDS(ON)=13mΩ (typ.) @ VGS=5V Pin Description • • Super High Dense Cell Design Reliable and Rugged Top View of TO-252 D Applications • Power Management in LCD monitor/TV inverter. G S N-Channel MOSFET Ordering and Marking Information APM4010N Lead Free Code Handling Code Temp. Range Package Code Package Code U : TO-252 Operating Junction Temp. Range C : -55 to 150 ° C Handling Code TR : Tape & Reel TU : Tube Lead Free Code L : Lead Free Device APM4010N U : APM4010N XXXXX XXXXX - Date Code Note: ANPEC lead-free products contain molding compounds and 100% matte tin plate termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free solde [ ... ]

APM4010NU PDF Datasheet Download