This document introduces the HUF75345G3, HUF75345P3, HUF75345S3S N-Channel UltraFET power MOSFETs manufactured by Fairchild Semiconductor Corporation in 2005. These products are produced using the innovative UltraFET process, which achieves the lowest possible on-resistance per silicon area and provides outstanding performance. The MOSFETs can withstand high energy in the avalanche mode and have very low reverse recovery time and stored charge. They are designed for applications where power efficiency is important, such as switching regulators, switching converters, motor drivers, relay drivers, low-voltage bus switches, and power management in portable and battery-operated products.