Multilayer LC filter

A multilayer LC filter comprising:

• a multilayer body including insulator layers laminated in a lamination direction;
• at least one ground electrode between the insulator layers;
• a plurality of capacitor electrodes between the insulator layers;
• at least one planar electrode between the insulator layers;
• and
• a plurality of via electrodes extending the insulator layers;
• wherein
• the multilayer body has a rectangular or substantially rectangular parallelepiped shape and has a height direction that is the lamination direction, a length direction orthogonal to the height direction, and a width direction orthogonal to each of the height direction and the length direction;
• the via electrodes include open-side via electrodes connecting the plurality of capacitor electrodes and the at least one planar electrode and a short-circuit side via electrode connecting the at least one planar electrode and a ground electrode;
• an inductor is provided by a conductive path extending from the plurality of capacitor electrodes to the ground electrode through the open-side via electrodes, the at least one planar electrode, and the short-circuit side via electrode;
• a capacitor is provided by capacitance generated between the ground electrode and the plurality of capacitor electrodes;
• the inductor and the capacitor are connected in parallel to define an LC resonator;
• and
• a plurality of the LC resonators are in the multilayer body;
• each of the plurality of the LC resonators includes a respective one of the open-side via electrodes;
• the short-circuit side via electrode is a common electrode of all of the LC resonators in the multilayer body;
• the plurality of LC resonators include four LC resonators in the multilayer body;
• and
• when viewed in the lamination direction, the respective open-side via electrodes of the four LC resonators are separately positioned at four corners in the multilayer body.