<p>Disclosed are exemplary embodiments of common mode filters. In an exemplary embodiment, a common mode filter generally includes a magnetic substrate. The magnetic substrate includes an upper portion having one or more layers and a lower portion having one or more layers. A first interior conductor having a spiral pattern is on a top layer of the lower portion of the magnetic substrate. A second interior conductor having a spiral pattern is on a bottom layer of the upper portion of the magnetic substrate. A dielectric layer is between the first and second interior conductors to thereby electrically insulate the first interior conductor from the second interior conductor.</p>
