The HUF75639G3, HUF75639P3, HUF75639S3S, HUF75639S3 are N-channel UltraFET power MOSFETs manufactured by Fairchild Semiconductor. They have very low on-resistance, high switching speed, high current density, and high reliability. They are suitable for applications such as switching regulators, switching converters, motor drivers, relay drivers, low-voltage bus switches, and power management in portable and battery-operated products.