This part is a kind of semiconductor called AP4503AGM-HF-3.

Function of this product has Complementary N and P-channel Enhancement-mode Power MOSFETs.

Manufacturers : Advanced Power Electronics

Image and pinout :

Some of the text within the PDF file :

Advanced Power Electronics Corp. AP4503AGM-HF-3 Complementary N and P-channel Enhancement-mode Power MOSFETs Simple Drive Requirement D2 Low On-resistance Fast Switching Performance RoHS-compliant, halogen-free D1 D1 D2 N-CH G2 S2 BV DSS RDS(ON) ID BVDSS RDS(ON) ID D1 30V 28mΩ 6.9A -30V 36mΩ -6.3A D2 G1 SO-8 S1 P-CH Description Advanced Power MOSFETs from APEC provide the designer with the best combination of fast switching, low on-resistance and cost-effectiveness. The AP4503AGM-HF-3 is in a standard SO-8 package, which is widely used for commercial and industrial surface-mount applications, and is well suited for applications such as DC and servo motor drives. G1 S1 G2 S2 Absolute Maximum Ratings Symbol VDS VGS ID at TA=25°C ID at TA=70°C IDM PD at TA=25°C TSTG TJ [ ... ]

AP4503AGM-HF-3 PDF Datasheet Download