This part is a kind of semiconductor called AO4496.
Function of this product has N-Channel Enhancement Mode Field Effect Transistor.
Manufacturers : Alpha & Omega Semiconductors
Image and pinout :

Some of the text within the PDF file :
AO4496 N-Channel Enhancement Mode Field Effect Transistor General Description The AO4496/L uses advanced trench technology to provide excellent RDS(ON) with low gate charge. This device is suitable for use as a DC-DC converter application. AO4496 and AO4496L are electrically identical. -RoHS Compliant -AO4496L is Halogen Free Features VDS (V) = 30V (VGS = 10V) ID = 10A RDS(ON) < 19.5mΩ (VGS = 10V) (VGS = 4.5V) RDS(ON) < 26mΩ UIS TESTED! Rg, Ciss, Coss, Crss Tested D S S S G D D D D S G SOIC-8 Absolute Maximum Ratings TJ=25°C unless otherwise noted Symbol Parameter VDS Drain-Source Voltage VGS Gate-Source Voltage Continuous Drain Current A Pulsed Drain Current Avalanche Current G Repetitive avalanche energy L=0.1mH Power Dissipation A G B Maximum 30 ±20 10 7. [ ... ]
AO4496 PDF Datasheet Download
