Third generation 650V MOSFETs cut resistance by 44%

Third generation 650V MOSFETs cut resistance by 44%

New Products |
By Nick Flaherty

The SuperFET III MOSFET family combines best-in-class reliability, low EMI, high efficiency and thermal performance for high performance applications. Complementing its performance characteristics, its broad range of package options gives product designers greater flexibility, particularly with size constrained designs.

“Regardless of their industry, our customers are seeking dramatic improvements in efficiency, performance and reliability with each new product generation and are also striving to get their new products to market faster. In addition to designing our new SuperFET III MOSFETs to help customers meet their key product goals, we ensured the devices would also help reduce BOM costs, shrink board space and simplify the product design,” said Jin Zhao, Vice President and General Manager of Fairchild’s High Power Industrial division.

The SuperFET III technology has the lowest Rds(on) in any easy drive version of a Super Junction MOSFET at 23mΩ in a TO-247 packageup to 70mΩ in a D2-PAK, delivering high efficiency. It achieves this by advanced charge balancing technology which also enables 44 percent lower Rds(on) than its SuperFET II predecessors, in the same package size.

A key factor in the SuperFET III family’s exceptional ruggedness and reliability is its best-in-class body diode and three times better single pulse Avalanche Energy (EAS) performance than its closest competitor.

The lower peak drain-source voltage during turn off of the 650V SuperFET III improves system reliability in low temperature operation because the breakdown voltage naturally drops by 5 percent at -25ºC junction temperature than room temperature and the peak drain-source voltage becomes higher at low temperature.

These reliability advantages are particularly important for industrial applications such as solar inverters, Uninterruptable Power Supplies (UPS) and EV chargers which must be capable of enduring higher or lower external ambient temperatures. The SuperFET III MOSFET family is available today in multiple package and parametric options:

More information about Fairchild ’s SuperFET III MOSFET family is available at

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