This part is a kind of semiconductor called APM2014N.
Function of this product has N-Channel Enhancement Mode MOSFET.
Manufacturers : Anpec Electronics
Image and pinout :

Some of the text within the PDF file :
APM2014N N-Channel Enhancement Mode MOSFET Features • • • • 20V/30A , RDS(ON)=12mΩ(typ.) @ VGS=4.5V RDS(ON)=18mΩ(typ.) @ VGS=2.5V Super High Dense Cell Design for Extremely Low RDS(ON) Reliable and Rugged TO-252 Package Pin Description 1 2 3 G D Applications • Power Management in Computer, Portable Equipment and Battery Powered Systems. Top View of TO-252 Ordering and Marking Information APM2014N Handling Code Temp. Range APM2014N U : APM2014N XXXXX Absolute Maximum Ratings Symbol VDSS VGSS Parameter w w .D w Package Code t a S a e h t e U 4 .c S m o Package Code U : TO-252 Operation Junction Temp. Range C :-55 to 150 °C Handling Code TR : Tape & Reel XXXXX - Date Code (TA = 25°C unless otherwise noted) Rating 20 ±16 V Unit Drain-Source Voltage [ ... ]