This part is a kind of semiconductor called AO4407.

Function of this product has P-Channel Enhancement Mode Field Effect Transistor.

Manufacturers : Alpha & Omega Semiconductors

Image and pinout :

Some of the text within the PDF file :

AO4407 30V P-Channel MOSFET General Description Product Summary The AO4407 combines advanced trench MOSFET technology with a low resistance package to provide extremely low RDS(ON). This device is ideal for load switch and battery protection applications. VDS ID (at VGS=-20V) RDS(ON) (at VGS=-20V) RDS(ON) (at VGS =-10V) RDS(ON) (at VGS =-5V) * RoHS and Halogen-Free Compliant 100% UIS Tested 100% Rg Tested -30V -12A < 13mΩ < 14mΩ < 30mΩ Top View D D D D SOIC-8 Bottom View 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 TA=70°C Pulsed Drain Current C Avalanche Current C Avalanche energy L=0.3mH C ID IDM IAS, IAR EAS, EAR TA=25°C Power Dissipat [ ... ]

AO4407 PDF Datasheet Download