Coil component

A coil component formed by laminating a plurality of substrates each of which includes a pattern-wiring forming a coil, wherein

• for each of the plurality of substrates, a plurality of through-holes are arranged;
• the pattern-wiring is provided with a loop-shaped portion surrounding a circumference of a center hole which penetrates the substrate and is provided with a pair of end portions which extend from the loop-shaped portion along a direction perpendicular to an arrangement direction along which two neighboring through-holes of the through-holes are arranged, and concurrently, which are formed apart from each other with a predetermined insulation-distance;
• the two neighboring through-holes within the plurality of through-holes penetrate the substrate in a state that at least a part of an opening of each through-hole superimposes each of the pair of end portions and is connected electrically with each of the end portions;
• the opening of one through-hole of the two neighboring through-holes at one end portion of the pair of end portions is provided at a biased position with respect to a center of the one end portion,
• the opening of an other through-hole of the two neighboring through-holes at an other end portion of the pair of end portions is provided at a biased position with respect to a center of the other end portion, and
• a distance between the center of the one end portion and the center of the other end portion is greater than a distance between a center of the opening of the one through-hole and a center of the other through-hole for each of the plurality of substrates.