This part is a kind of semiconductor called AP30P10GP-HF-3.
Function of this product has 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. AP30P10GP/S-HF-3 P-channel Enhancement-mode Power MOSFET Simple Drive Requirement Low Gate Charge Fast Switching Performance RoHS-compliant, halogen-free D BV DSS RDS(ON) G S -100V 80mΩ -25A ID Description Advanced Power MOSFETs from APEC provide the designer with the best combination of fast switching, low on-resistance and cost-effectiveness. The AP30P10GS-HF-3 is in the TO-263 package, which is widely used for commercial and industrial surface-mount applications, and is well suited for low voltage applications such as DC/DC converters. The AP30P10GP-HF-3 is in the TO-220 through-hole package which is used where a low PCB footprint or an attached heatsink is required. G G D S TO-263 (S) Absolute Maximum Ratings Symbol VDS VGS ID at TC=25°C ID [ ... ]
AP30P10GP-HF-3 PDF Datasheet Download
