This part is a kind of semiconductor called AOD254.

Function of this product has N-Channel MOSFET.

Manufacturers : Alpha & Omega Semiconductors

Image and pinout :

Some of the text within the PDF file :

AOD254 150V N-Channel MOSFET General Description The AOD254 uses trench MOSFET technology that is uniquely optimized to provide the most efficient high frequency switching performance.Power losses are minimized due to an extremely low combination of RDS(ON) and Crss.In addition,switching behavior is well controlled with a soft recovery body diode.This device is ideal for boost converters and synchronous rectifiers for consumer, telecom, industrial power supplies and LED backlighting. Product Summary VDS ID (at VGS=10V) RDS(ON) (at VGS=10V) RDS(ON) (at VGS =4.5V) 150V 28A < 46mΩ < 53mΩ 100% UIS Tested 100% Rg Tested TO252 DPAK Top View D D Bottom View D S G S G G S Absolute Maximum Ratings TA=25° C unless otherwise noted Parameter Symbol Drain-Source Voltage VDS Gate-Source Vo [ ... ]

AOD254 PDF Datasheet Download