DR73-221-R is a high power density, high efficiency shielded drum core inductor designed for DC-DC converter and power filtering applications. It features a rated inductance of 220 µH with an open circuit inductance (OCL) of 223.3 µH (±20%), a typical DCR of 1.05 O, and supports an RMS current of 0.52 A and peak saturation current of 0.53 A. The inductor utilizes ferrite core material with magnetic shielding and operates over a temperature range of -40°C to +125°C. Common applications include DC-DC converters, buck/boost/forward/resonant converters, LCD panels, portable power devices, and noise filtering circuits.