CMS1-8-R is a surface mount toroidal common mode inductor designed for EMI filtering and noise suppression in power supply applications. It features a minimum open circuit inductance (OCL) of 51.2 µH, a maximum RMS current rating of 2.20 A, and typical DC resistance of 0.026 O at 20°C on both windings. The inductor provides 300 Vdc winding-to-winding isolation, a leakage inductance of 0.56 µH, and an interconducting capacitance of 2.7 pF. With a 1:1 turns ratio and ferrite core construction meeting UL94V-0 flammability standards, this component is ideal for DC-DC brick power supplies, discrete output supplies, and point-of-use power supplies (PUPS).