A coil electronic component includes a body having first to fourth surfaces, an insulating substrate disposed in the body, coil portions disposed on opposing surfaces of the insulating substrate, respectively, a first lead-out portion connected to one of the coil portions and exposed from the first and third surfaces, a second lead-out portion connected to another of the coil portions and exposed from the second and third surfaces, and first and second external electrodes covering the first and second lead-out portions, respectively. The insulating substrate includes a support portion supporting the coil portions, a first end portion extending from the support portion and including end surfaces respectively exposed from the first and third surfaces and spaced apart from each other, and a second end portion extending from the support portion and including end surfaces exposed from the second and third surfaces and spaced apart from each other.

The disclosure provides an inductor and a method for producing the same. The inductor includes a first core made of a first magnetic material; at least two windings, configured to be twisted with each other and embedded within the first core, each winding having a pair of terminals extending out of the first core.

A transformer of the symmetric-asymmetric type includes comprising a primary inductive circuit and a secondary inductive circuit formed in a same plane by respective interleaved and stacked metal tracks. A first crossing region includes a pair of connection plates facing one another, with each connection plate having a rectangular shape that is wider than the metal tracks, and diagonally connected to tracks of the secondary inductive circuit.

A transformer of the symmetric-asymmetric type includes comprising a primary inductive circuit and a secondary inductive circuit formed in a same plane by respective interleaved and stacked metal tracks. A first crossing region includes a pair of connection plates facing one another, with each connection plate having a rectangular shape that is wider than the metal tracks, and diagonally connected to tracks of the secondary inductive circuit.

A coil component includes a body that is made of a composite material containing a resin material and metal powder, a coil conductor which is provided in the body and an end portion of which is exposed on an end face of the body, and a metal film that is provided on an outer surface of the body and that is electrically connected to the coil conductor on the end face in the outer surface. The outer surface of the body has a contact area that is in contact with the metal film. Multiple particles of the metal powder escape from the resin material and are in contact with each other in the contact area of the body.

A coil component includes a body that is made of a composite material containing a resin material and metal powder, a coil conductor which is provided in the body and an end portion of which is exposed on an end face of the body, and a metal film that is provided on an outer surface of the body and that is electrically connected to the coil conductor on the end face in the outer surface. The outer surface of the body has a contact area that is in contact with the metal film. Multiple particles of the metal powder escape from the resin material and are in contact with each other in the contact area of the body.

A method of manufacturing an electronic component capable of preventing entrance of a plating solution and a flux component at an interface to which an inner electrode of a ceramic element body is extended, and capable of forming an outer electrode of an arbitrary shape. A ceramic element body is made of a ceramic material containing a metal oxide, and part of an inner electrode is extended to extended surfaces of the ceramic element body. A base electrode is formed on each of the extended surfaces using a conductive paste to be connected to the inner electrode. Part of another surface of the ceramic element body adjacent to the extended surfaces is locally heated, and part of the metal oxide is reduced to form a reformed portion. A plating electrode is continuously formed over the base electrode and the reformed portion through a plating method to form outer electrodes.

A method of manufacturing an electronic component capable of preventing entrance of a plating solution and a flux component at an interface to which an inner electrode of a ceramic element body is extended, and capable of forming an outer electrode of an arbitrary shape. A ceramic element body is made of a ceramic material containing a metal oxide, and part of an inner electrode is extended to extended surfaces of the ceramic element body. A base electrode is formed on each of the extended surfaces using a conductive paste to be connected to the inner electrode. Part of another surface of the ceramic element body adjacent to the extended surfaces is locally heated, and part of the metal oxide is reduced to form a reformed portion. A plating electrode is continuously formed over the base electrode and the reformed portion through a plating method to form outer electrodes.

A dry type cast coil transformer (28) includes a hollow body (29), a dome structure (26) extending from the body, and undulation structure (30), defining at least a portion of an outer surface of the dome structure, constructed and arranged to increase an electrical track path in the dome structure.

A dry type cast coil transformer (28) includes a hollow body (29), a dome structure (26) extending from the body, and undulation structure (30), defining at least a portion of an outer surface of the dome structure, constructed and arranged to increase an electrical track path in the dome structure.