This part is a kind of semiconductor called AP2309GN.
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 :
AP2309GN Pb Free Plating Product Advanced Power Electronics Corp. ▼ Simple Drive Requirement ▼ Small Package Outline ▼ Surface Mount Device S D P-CHANNEL ENHANCEMENT MODE POWER MOSFET BVDSS RDS(ON) ID -30V 75mΩ - 3.7A Description SOT-23 G D The Advanced Power MOSFETs from APEC provide the designer with the best combination of fast switching, , low on-resistance and cost-effectiveness. The SOT-23 package is universally preferred for all commercialindustrial surface mount applications and suited for low voltage applications such as DC/DC converters. G S Absolute Maximum Ratings Symbol VDS VGS ID@TA=25℃ ID@TA=70℃ IDM PD@TA=25℃ TSTG TJ Drain-Source Voltage Gate-Source Voltage Continuous Drain Current Continuous Drain Current Pulsed Drain Current 1,2 3 3 www.DataSheet4U [ ... ]
AP2309GN PDF Datasheet Download
