Santa Clara, Calif. - Vishay Siliconix' new "SUR"-packaged TrenchFET power MOSFETs are in a reverse-lead TO-252 DPAK package to allow the devices to be mounted inversely on the printed circuit board with a heat sink on top, enabling cooler operation. With heat liberated to the air rather than absorbed by the board, these power MOSFETs feature lower effective on-resistance and higher current capability than DPAK power MOSFETs with conventional lead-outs. Cooler operation also takes thermal stress off the board, contributing to better overall reliability.
Suited to desktop computer core DC/DC conversion applications, the SUR power MOSFETs enable the design of "greener" VRM modules and PC motherboards that use power more efficiently and require fewer components. The 20-volt SUR70N02 04P and the 30-volt SUR50N03 06P, SUR50N03 09P, SUR50N03 12P, and SUR50N03 16P power MOSFETs have on-resistance values ranging from 4 milliohms to 16 milliohms and can serve as both synchronous and control
FETs in the DC/DC converter. Samples and production quantities of the SUR family are available now, with lead times of 10 to 12 weeks for larger orders. Pricing for U.S. delivery starts at 60 cents in 100k-pieces.