● The current going through differential mode inductor must be AC current, generally the core material is iron powder of lower μ value, so the inductance is lower, whose typical value is between several ten and hundred uH.

● Disturbing magnetic field produces turn-to-turn differential mode current, then on load interference arises, which is called differential mode interference. The filtering inductor suppressing differential mode interference is just differential mode inductor. 

● A differential mode inductor is a coil wound on an iron core.

● The differential mode inductor features being used for high-current condition. Due to the coil wound on a iron core, then when the incoming current increases, the core will  reach a saturation state, so the mostly used material is metal powder core.