The SD53-220-R Fixed Inductor 22uH 0.94A 0.179ohms is a passive component manufactured by Eaton, specifically a type of inductor. Inductors are electrical devices used to store energy in the form of a magnetic field. This particular part has a 22uH inductance value, a 0.94A current rating, and a 0.179ohms DC resistance. It is a wirewound type of inductor and is encased in an industry-standard SMD package, which makes it compatible with most PCBs and assembly processes. The inductor is designed to be used in a wide range of power electronics systems, such as in AC/DC converters, battery chargers, motor drives, and more.