This part is a kind of semiconductor called AO4726.

Function of this product has N-Channel MOSFET.

Manufacturers : Alpha & Omega Semiconductors

Image and pinout :

Some of the text within the PDF file :

AO4726 30V N-Channel MOSFET SRFET TM General Description SRFETTM The AO4726 uses advanced trench technology with a monolithically integrated Schottky diode to provide excellent RDS(ON) and low gate charge. This device is suitable for use as a low side FET in SMPS, load switching and general purpose applications. Product Summary VDS (V) = 30V ID =20A (VGS = 10V) RDS(ON) < 4.5mΩ (VGS = 10V) RDS(ON) < 5.5mΩ (VGS = 4.5V) 100% UIS Tested 100% Rg Tested Top View D D D D SOIC-8 Bottom View D G S S S Absolute Maximum Ratings TA=25°C unless otherwise noted Parameter Symbol Drain-Source Voltage VDS Gate-Source Voltage VGS Continuous Drain TA=25°C Current AF TA=70°C Pulsed Drain Current B Avalanche Current B Repetitive avalanche energy L=0.3mH B IDSM IDM IAR EAR Power Diss [ ... ]

AO4726 PDF Datasheet Download