A common mode inductor includes a bobbin with two windings. A first winding is positioned between a first end flange and a first offset flange. A second winding is positioned between a second end flange and a second offset flange. The windings are spaced apart by a center section without windings. A pair of E-cores, each having a pair of outer legs and a center leg, are positioned in a passageway of the bobbin such that the center leg of each E-core is surrounded by a respective one of the two windings. An I-bar is positioned in the center section of the bobbin between the two offset flanges with the I-bar perpendicular to the outer legs and the center legs of the two E-cores. The I-bar core increases leakage inductance between the two windings to improve the suppression of electromagnetic interference caused by common mode noise in the two windings.