This part is a kind of semiconductor called APM4048DU4.

Function of this product has Dual Enhancement Mode MOSFET.

Manufacturers : ANPEC

Image and pinout :

Some of the text within the PDF file :

APM4048DU4 Dual Enhancement Mode MOSFET (N- and P-Channel) Features • N-Channel 40V/7.5A, RDS(ON)=25mΩ (typ.) @ VGS=10V RDS(ON)=35mΩ (typ.) @ VGS=4.5V • P-Channel -40V/-6A, RDS(ON)=37mΩ (typ.) @ V= GS -10V RDS(ON)=49mΩ (typ.) @ V =-4.5V GS • Super High Dense Cell Design • Reliable and Rugged • Lead Free and Green Devices Available (RoHS Compliant) Applications • Power Management in LCD monitor/TV Pin Description D1 D2 S1 G1 S2 G2 Top View of TO-252-4 (3) (3) D1 D2 (2) (5) G1 G2 S1 (1) N MOS S2 (4) P MOS Ordering and Marking Information APM4048D Assembly Material Handling Code Temperature Range Package Code Package Code U4 : TO-252-4 Operating Junction Temperature Range C : -55 to 150 oC Handling Code TR : Tape & Reel Assembly Material G : Halo [ ... ]

APM4048DU4 PDF Datasheet Download