Overlarge current filter inductor

The invention relates to the technical field of inductors, in particular to an overlarge current filter inductor which comprises a square shell with an opening in the bottom, two opposite side edges of the bottom of the square shell extend outwards to form pin fixing parts respectively, pins are symmetrically arranged at the two opposite ends of each pin fixing part, and the cross section of each pin is in an L shape. A fixing piece and a square magnetic core are arranged in an inner cavity of the square shell, the square magnetic core is fixedly installed in the square shell through the fixing piece, coils are wound on the outer walls of the two opposite side edges of the square magnetic core, and the leading-out ends of the two ends of each coil are led out and electrically connected with the two pins on the same side. The common-mode filter inductor can be installed in the square shell through the fixing piece during installation, so that the coil exposed outside is protected through the square shell, mean