UP4B-220-R is a UNI-PAC™ drum core power inductor designed for applications requiring low inductance and high current in a miniature package. This inductor features a 220 µH inductance value with an RMS current rating of 4.4 A and a DC resistance of 0.00177 O, providing efficient energy storage and minimal power loss. The device incorporates a ferrite core material with a protective case that eliminates core breakage and meets UL 94V-0 flammability standards. Operating over a temperature range of -40°C to +125°C (ambient plus self-temperature rise), the UP4B-220-R is ideal for power conversion circuits, switching regulators, and other applications requiring maximum power density in a compact form factor.