This part is a kind of semiconductor called APM4052DU4.

Function of this product has Dual Enhancement Mode MOSFET.

Manufacturers : Anpec

Image and pinout :

Some of the text within the PDF file :

APM4052DU4 Dual Enhancement Mode MOSFET (N- and P-Channel) Features • N-Channel 40V/7.5A, RDS(ON)= 30mΩ (typ.) @ VGS= 10V RDS(ON)= 46mΩ (typ.) @ VGS= 5V Pin Description D1 D2 S1 G1 S2 G2 • P-Channel -40V/-6A, RDS(ON)= 40mΩ (typ.) @ VGS= -10V RDS(ON)= 52mΩ (typ.) @ VGS= -5V Top View of TO-252-4 (3) D1 (3) D2 • • • Super High Dense Cell Design Reliable and Rugged Lead Free and Green Devices Available (RoHS Compliant) (2) G1 (5) G2 Applications • Power Management in LCD monitor/TV S1 (1) S2 (4) N MOS P MOS Ordering and Marking Information APM4052D 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 : Halogen and Lead [ ... ]

APM4052DU4 PDF Datasheet Download