The PM54-221K-RC is an SMD power inductor from the PM54 series featuring a 220 µH inductance with ±10% tolerance, designed for input/output filtering in DC/DC converters and power supplies. This compact component has a small diameter of 5.8 mm maximum and a profile of 4.8 mm, making it ideal for space-constrained applications in portable communication equipment, camcorders, and LCD TVs. The inductor exhibits a DC resistance of 1.57 O, a self-resonant frequency of 6 MHz, and supports a maximum RMS current of 0.35 A with a typical saturation current of 0.44 A. It operates reliably across a temperature range of -40°C to +125°C and is RoHS compliant, utilizing a ferrite DR core with enameled copper wire and silver/nickel/tin terminals for robust soldering performance.