This part is a kind of semiconductor called AON6512.
Function of this product has N-Channel MOSFET.
Manufacturers : Freescale
Image and pinout :

Some of the text within the PDF file :
AON6512 30V N-Channel AlphaMOS General Description • Latest Trench Power AlphaMOS ( αMOS LV) technology • Very Low RDS(on) at 4.5VGS • Low Gate Charge • High Current Capability • RoHS and Halogen-Free Compliant Features VDS ID (at VGS=10V) RDS(ON) (at VGS=10V) RDS(ON) (at VGS = 4.5V) 30V 150A < 1.7mΩ < 2.4mΩ Top View 1 2 3 4 D 8 7 6 5 G S Absolute Maximum Ratings TA=25° C unless otherwise noted Parameter Symbol Drain-Source Voltage VDS Gate-Source Voltage Continuous Drain Current G Pulsed Drain Current Continuous Drain Current Avalanche Current C Avalanche energy L=0.05mH C VDS Spike Power Dissipation B Power Dissipation A 100ns TC=25° C TC=100° C TA=25° C TA=70° C Junction and Storage Temperature Range Thermal Characteristics Parameter Maximum Junction-to-Ambient [ ... ]
AON6512 PDF Datasheet Download
