This part is a kind of semiconductor called AON6403L.

Function of this product has N-Channel MOSFET.

Manufacturers : Alpha & Omega Semiconductors

Image and pinout :

Some of the text within the PDF file :

AON6403L P-Channel Power Transistor General Description The AON6403L 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. Product Summary VDS ID (at VGS= -10V) RDS(ON) (at VGS= -10V) RDS(ON) (at VGS = -4.5V) -30V -85A < 3.1mΩ < 4.3mΩ - RoHS Compliant - Halogen Free 100% UIS Tested 100% Rg Tested D Top View Fits SOIC8 footprint ! G S DFN5X6 Absolute Maximum Ratings TA=25°C unless otherwise noted Symbol Parameter VDS Drain-Source Voltage VGS Gate-Source Voltage Continuous Drain Current G Pulsed Drain Current Continuous Drain Current Avalanche Current C Repetitive avalanche energy L=0.1mH TC=25°C Power Dissipation B C C Maximum -30 ±20 -85 -67 -280 -21 [ ... ]

AON6403L PDF Datasheet Download