| 摘要 |
The present invention relates to a common mode filter using a through contact in which through holes are formed in each layer constituting the filter and connected with a conductive material to form internal terminal electrodes so that a small size of a filter can be implemented. A common mode filter using a through contact according to an embodiment of the present invention includes a base layer plate having through holes formed at edges and filled with a conductive material such that the base layer plate is connected to an external terminal electrode; a coil layer plate having through holes formed at edges corresponding to the through holes of the base layer plate and an internal electrode formed on a top surface thereof, wherein an outermost end of the internal electrode is connected to one of the through holes filled with a conductive material so that a connection end is formed; and a protective layer plate placed at an upper portion of the coil layer plate to perform a function of a protective layer, wherein the through holes of the base layer plate and the coil layer plate are connected to each other with a conductive material so that a lead electrode is formed. |
