LAMINATED COIL COMPONENT AND METHOD OF PRODUCING THE SAME

摘要

It is made possible to increase the volume of each via hole while preventing the distance between via holes disposed adjacent each other along the axial direction of a coil from being reduced. Via holes (3) in a laminated coil component (1) are formed in each ceramic layer (16) and through-holes (5) each filled with a conductor lie in a line in the laminating direction (X). Each of the through-holes (5) has a cubic form such that the difference between the diameter along the axial direction (Y) of a coil (4) in the open surface of an opening (5a) on one side of the ceramic layer (16) and the diameter along the axial direction (Y) of the coil (4) in the open surface of an opening (5b) on the other side is smaller than the difference between the diameter in a direction (Z) orthogonal to the axial direction (Y) of the coil (4) in the open surface of the opening (5a) on one side of the ceramic layer (16) and the diameter in the direction (Z) orthogonal to the axial direction (y) of the coil (4) in the open surface of the opening (5b) on the other side.