COMMON MODE FILTER

摘要

The present invention relates to a common mode filter capable of increasing adhesion between coil layers, which comprises: a coil unit having a coil formed in one surface, and having a plurality of insulating layers including fillers stacked therein; a first cover unit arranged in a lower part of the coil unit; a second cover unit arranged in an upper part of the coil unit; and a surface modification layer for increasing adhesion between the insulating layers on at least one surface of the insulating layer.