A method of manufacturing a coil component which includes an element body including magnetic layers stacked in a first direction and having a surface located in the first direction or a second direction reverse to the first direction, a coil and extended wiring in the element body, and an outer electrode at least on the surface. The method includes forming an unbaked coil wiring layer zone by providing a paste-like unbaked coil wiring layer and a paste-like unbaked magnetic layer in the same layer in the direction orthogonal to the first direction on an upper surface of a sheet-like unbaked magnetic layer with respect to the first direction; and forming an unbaked extended wiring layer zone by providing a paste-like unbaked extended wiring layer and a paste-like unbaked magnetic layer in the same layer in the direction orthogonal to the first direction without providing a sheet-like unbaked magnetic layer.

Disclosed herein is a coil component that includes: a coil part having a structure in which alternately stacking a plurality of conductor layers each including a spiral coil pattern and a plurality of insulating layers; a first magnetic layer disposed in an inner diameter area of the coil part, in an outside area of the coil part, and on one side in an axial direction of the coil part; and a second magnetic layer disposed on other side in the axial direction of the coil part. Each of the first and second magnetic layers comprises a composite magnetic material containing magnetic fillers and binder resin. The content of the magnetic filers in the first magnetic layer is higher than the content of the magnetic fillers in the second magnetic layer.

A multilayer coil component includes an element body including a plurality of metal magnetic particles, and a plurality of coil conductors. The plurality of coil conductors is disposed in the element body. The plurality of coil conductors is separated from each other in a predetermined direction and electrically connected to each other. The plurality of coil conductors includes one pair of side surfaces opposing each other in the predetermined direction. Surface roughness of the one pair of side surfaces is less than 40% of an average particle size of the plurality of metal magnetic particles.

A ferrite core includes a ferrite sintered body in which integrally formed are a winding core portion, extending in a lengthwise direction, and flange portions provided at both ends in the lengthwise direction of the winding core portion and projecting from the winding core portion in at least a height direction orthogonal to the lengthwise direction. Pores are present inside the winding core portion and the flange portions, and an abundance ratio of the pores in the winding core portion is equal to or more than about 0.05% and equal to or less than about 1.00% (i.e., from about 0.05% to about 1.00%).

In a coil component, fixing strength of an external terminal is improved. In the coil component, on the end face of the element body, the center position of the external terminal electrode in the first direction is biased toward the center position of the end face with respect to the center position of the outer end portion. Therefore, the fixing area between the external terminal electrode and the element body is increased on the center position side of the end face, and thus fixing strength between the external terminal electrode and the element body is improved.

In a coil component, coupling coefficient is improved. In the coil component, the coupling position between the outer end portion of the first planar coil and the first lead-out portion is biased toward the second lead-out portion with respect to the center line of the first lead-out portion, whereby the length of the second planar coil not alongside with the outermost turn of the first planar coil is shortened. By shortening the length of the second planar coil, the coupling coefficient between the first coil portion and the second coil portion is increased.

An electronic component includes a magnetic body containing magnetic metal powder; and external electrodes disposed on an outer portion of the magnetic body. The external electrodes include first plating layers in direct contact with the magnetic body.

The present disclosure provides a magnetic element, including: a magnetic core with at least one magnetic column extending along a first direction; a first winding surrounding the magnetic column; a second winding at least partially surrounding the first winding; and a third winding at least partially surrounding the second winding. The number of turns of the second winding is less than or equal to the number of turns of the first winding. The number of turns of the third winding is less than or equal to the number of turns of the first winding.

The present disclosure provides a magnetic element, including: a magnetic column extending along a first direction; a first winding surrounding the magnetic column, connected to a first terminal located on a first side of the magnetic element, and the first terminal has a first projection of the first terminal on a first side surface of the magnetic element; and a second winding surrounding the magnetic column and at least partially outside the first winding, wherein the second winding has a first projection of the second winding on the first side surface of the magnetic element, the first projection of the first terminal is at least partially outside the first projection of the second winding, the second winding is a flatwise-wound winding, and the number of turns of the first winding is greater than or equal to the number of turns of the second winding.

A transformer comprising a first signal path in a first plane or layer and a second signal path in the same plane or layer. The second signal path is offset in a diagonally direction in relation to the first signal path, such that the first signal path and the second signal path are in proximity to establish electric-field coupling between the first signal path and the second signal path. A jumper, located in a second plane, is electrically connected to either the first signal path or the second signal path through vias that extend from the first plane to the second plane. The jumper prevents electrical contact between the first and the second signal path at locations where the first and the second signal path would otherwise intersect on the first plane. The shape of the first and second signal paths may be square or rectangular, or both.