The FQP4N90C is a N-channel QFET® enhancement-mode power MOSFET produced using Fairchild Semiconductor's proprietary planar stripe and DMOS вот ссылка. This advanced MOSFET technology has been especially tailored to reduce ON-state resistance and to provide superior switching performance and high на этой странице energy strength.
QuietAir vent technology. QuietAir™ is our innovative diffuser vent technology within the mask elbow that makes the AirFit F20 89% quieter 1 and 70% gentler than before. 2 Featuring small multidirectional openings over a widespread area, QuietAir breaks up exhaled air so that it’s spread out lightly.