This part is a kind of semiconductor called AP4500GM-HF.

Function of this product has N AND P-CHANNEL ENHANCEMENT MODE POWER MOSFET.

Manufacturers : Advanced Power Electronics

Image and pinout :

Some of the text within the PDF file :

Advanced Power Electronics Corp. AP4500GM-HF Halogen-Free Product N AND P-CHANNEL ENHANCEMENT MODE POWER MOSFET ▼ Simple Drive Requirement ▼ Low Gate Charge ▼ Fast Switching Performance D2 D2 D1 D1 ▼ RoHS Compliant & Halogen-Free SO-8 G2 S2 G1 S1 Description AP4500 series are from Advanced Power innovated design and silicon process technology to achieve the lowest possible on-resistance and fast switching performance. It provides the designer with an extreme efficient device for use in a wide range of power applications. N-CH P-CH BVDSS RDS(ON) ID BVDSS RDS(ON) ID D1 20V 30mΩ 6A -20V 50mΩ -5A D2 The SO-8 package is widely preferred for all commercialindustrial surface mount applications using infrared reflow technique and suited for voltage conversion or switch appli [ ... ]

AP4500GM-HF PDF Datasheet Download