This part is a kind of semiconductor called APM4015K.

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

Manufacturers : ANPEC

Image and pinout :

Some of the text within the PDF file :

APM4015K P-Channel Enhancement Mode MOSFET Features • -40V/-7.5A, RDS(ON)=18mΩ (typ.) @ VGS=-10V RDS(ON)=25mΩ (typ.) @ VGS=-4.5V Pin Description D D D D • • • Super High Dense Cell Design Reliable and Rugged Lead Free and Green Devices Available (RoHS Compliant) S S S G Top View of SOP-8 ( 1, 2, 3 ) S S S Applications • Power Management in LCD TV Inverter (4) G D D DD (5,6,7,8) P-Channel MOSFET Ordering and Marking Information APM4015 Assembly Material Handling Code Temperature Range Package Code Package Code K : SOP-8 Operating Junction Temperature Range C : -55 to 150 oC Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device XXXXX - Date Code APM4015 K : APM4015 XXXXX Note: ANPEC lead-free products contain molding compounds/die attac [ ... ]

APM4015K PDF Datasheet Download