This part is a kind of semiconductor called 70N03.

Function of this product has N-Ch 30V Fast Switching MOSFETs.

Manufacturers : Cmos

Image and pinout :

Some of the text within the PDF file :

CMD70N03/CMU70N03 N-Ch 30V Fast Switching MOSFETs General Description The 70N03 is the highest performance trench N-ch MOSFETs with extreme high cell density , which provide excellent RDSON and gate charge for most of the synchronous buck converter applications . The 70N03 meet the RoHS and Green Product requirement , 100% EAS guaranteed with full function reliability approved. Features Advanced high cell density Trench technology Super Low Gate Charge Excellent CdV/dt effect decline 100% avalanche tested Green Device Available Absolute Maximum Ratings Product Summery BVDSS 30V RDSON 7m ID 70A Applications High Frequency Point-of-Load Synchronous Buck Converter for MB/NB/UMPC/VGA Networking DC-DC Power System Load Switch TO252 / TO251 Pin Configuration D G S TO252 G D S TO251 Sy [ ... ]

70N03 PDF Datasheet Download