This part is a kind of semiconductor called AOD4184A.

Function of this product has 40V N-Channel MOSFET.

Manufacturers : Freescale

Image and pinout :

Some of the text within the PDF file :

AOD4184A 40V N-Channel MOSFET General Description The AOD4184A combines advanced trench MOSFET technology with a low resistance package to provide extremely low RDS(ON). This device is well suited for high current load applications. Features VDS ID (at VGS=10V) RDS(ON) (at VGS=10V) RDS(ON) (at VGS = 4.5V) 40V 50A < 7mΩ < 9.5mΩ D G S 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 C C Maximum 40 ±20 50 40 120 13 10 35 61 50 25 2.3 1.5 -55 to 175 Units V V A TC=25°C TC=100°C TA=25°C TA=70°C ID IDM IDSM IAS, IAR EAS, EAR PD PDSM TJ, TSTG A A mJ W W °C Avalanche energy L=0.1mH Power Dissipation B TC=25°C T [ ... ]

AOD4184A PDF Datasheet Download