MULTILAYER COIL COMPONENT AND METHOD FOR PRODUCING THE SAME

摘要

Provided is a highly reliable multilayer coil component wherein migration of Ag constituting an inner conductor is controlled, problem of internal stress is relaxed without forming an air gap between a magnetic ceramic layer and an inner conductor layer, DC resistance is lowered, and disconnection of an inner conductor due to a surge is prevented from occurring easily. A metal film (20) is distributed over the surface of an inner conductor (2), so that an air gap does not exist on the interface (A) of the inner conductor (2) including the metal film (20) and a magnetic ceramic (11) on the periphery of the inner conductor, and the interface (A) of the inner conductor (2) and the magnetic ceramic (11) is in a dissociative state. An acid solution containing a metal is infiltrated from the side surface of a magnetic ceramic element via a side gap portion, i.e. a region between the side portion of the inner conductor and the side surface of the magnetic ceramic element, so as to reach the interface of the inner conductor and the magnetic ceramic on the periphery thereof, and thus the metal is deposited on the surface of the inner conductor.