An inductor component includes an element body including magnetic powder and having first and second principal surfaces; an inductor wiring in the element body; a first vertical wiring that is in the element body, is connected to a first end portion of the inductor wiring, and extends to the first principal surface; a second vertical wiring that is in the element body, is connected to a second end portion of the inductor wiring, and extends to the first principal surface; and first and second external terminals exposed on the first principal surface and connected to the first and second vertical wirings, respectively. The magnetic powder contains an Fe element as a main component, and the first principal surface has an oxidized region, in which an oxide film of oxidized particles of the magnetic powder, is exposed and a non-oxidized region in which particles of the magnetic powder are exposed.

An inductor unit includes a conductive structure, a first magnetic element and an insulating layer. The conductive structure has a bottom conductive layer, a top conductive layer, and a first side conductive layer extending from the bottom conductive layer to the top conductive layer. The first magnetic element is disposed on the bottom conductive layer of the conductive structure. The insulating layer is disposed on the bottom conductive layer of the conductive structure, wherein the insulating layer covers and surrounds the first magnetic element. The circuit structure including the inductor unit and the methods for manufacturing the same are also provided.

A laminated electronic component in which magnetic body layers and conductor patterns are laminated, and the conductor patterns between the magnetic body layers are connected to form a coil within a laminated body. The magnetic body layers are formed from a metal magnetic body. At least one lead-out conductor pattern of the coil is connected with an external terminal formed on an undersurface of the laminated body through a conductor formed at a corner of the laminated body.

A multilayer coil component includes a multilayer body formed by stacking a plurality of insulating layers in a length direction and that has a built-in coil, and a first outer electrode and a second outer electrode that are electrically connected to the coil. The coil is formed by a plurality of coil conductors stacked in the length direction being electrically connected to each other. The first and second outer electrodes respectively cover at least parts of first and second end surfaces. A stacking direction and a coil axis direction are parallel to the first main surface. A length of a region in which the coil conductors are arranged in the stacking direction is from 85% to 95% of a length of the multilayer body. A distance between coil conductors adjacent to each other in the stacking direction lies in a range from 12 μm to 40 μm.

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.

An inductive structure may be manufactured with in-situ characterization of dimensions by forming a metal line on a top surface of a semiconductor die, forming a passivation dielectric layer over the metal line, measuring a height profile of a top surface of the passivation dielectric layer as a function of a lateral displacement, forming a magnetic material plate over the passivation dielectric layer, measuring a height profile of a top surface of the magnetic material plate as a function of the lateral displacement, and determining a thickness profile of the magnetic material plate by subtracting the height profile of the top surface of the passivation dielectric layer from the height profile of the top surface of the magnetic material plate. An inductive structure including the magnetic material plate and the metal line is formed.

A method of forming a package structure includes: forming an inductor comprising a through-via over a carrier; placing a semiconductor device over the carrier; molding the semiconductor device and the through-via in a molding material; and forming a first redistribution layer on the molding material, wherein the inductor and the semiconductor device are electrically connected by the first redistribution layer.

A coil component includes a body and a coil conductor embedded in the body. The body includes a magnetic layer and a non-magnetic layer. The magnetic layer is formed of a composite material including a metal particle and a resin material, and the non-magnetic layer is arranged not to extend through a winding portion of the coil conductor or not to entirely extend through the body.

An electrical power converter with segmented windings is provided. Comprises a transformer or autotransformer including a magnetic core (3) and at least a primary winding (51) and at least a secondary winding (52) arranged around the magnetic core (3). The primary winding and/or the secondary winding have at least one full turn that includes at least one power switch (10) and at least one capacitor (12) connected in series and arranged respectively opposite each other and facing opposite sides of the magnetic core, defining a cell (4) that is divided in four segments, a first segment (23) including said at least one switch, a second opposite segment (24) including said at least one capacitor, and two other connecting segments (21, 22) providing electrical connection between the first segment and the second segment, and each of said two other connecting segments having opposite electrical polarity.