This part is a kind of semiconductor called QM3004M3.
Function of this product has N-Ch 30V Fast Switching MOSFETs.
Manufacturers : UBIQ
Image and pinout :
Some of the text within the PDF file :
QM3004M3 General Description The QM3004M3 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 QM3004M3 meet the RoHS and Green Product requirement , 100% EAS guaranteed with full function reliability approved. Features z Advanced high cell density Trench technology z Super Low Gate Charge z Excellent CdV/dt effect decline z 100% EAS Guaranteed z Green Device Available Absolute Maximum Ratings N-Ch 30V Fast Switching MOSFETs Product Summery BVDSS 30V RDSON 9mΩ ID 46A Applications z High Frequency Point-of-Load Synchronous Buck Converter for MB/NB/UMPC/VGA z Networking DC-DC Power System z Load Switch PRPAK3X3 Pin Configuration D S SSG Symbol VDS V [ ... ]