A manufacturing method of a coil component comprising the steps of: preparing a coil assembly body in which a coil is attached on a magnetic core and a mold body which is formed with a cavity portion in the inside thereof and which includes at least one opening portion, putting a viscous admixture including magnetic powders and thermosetting resin and the coil assembly body in the cavity portion, pushing the put-in viscous admixture in the mold body, and thermally-curing the pushed-in viscous admixture and forming a magnetic exterior body which covers the coil assembly body.

An inductive component is provided, including: a coil former including a base body and being a carrier for a winding wire; an electrically insulating foil, some regions of the body being wrapped with the foil; and a winding of the wire around the coil former, such that the foil is between the wire and the body, and extends over a maximum of two thirds of a maximum possible effective length of the foil with which the foil would be present underneath the entire winding such that in some regions the wire is disposed over the foil, and in some regions the wire is disposed directly on the body, and such that a diameter of the winding in a region in which the wire is disposed over the foil is increased. A method for adjusting an inductance value for a group of inductive components of a same design is also provided.

A circuit assembly that includes an inductor including a core; a fixation member to which the inductor is fixed; a base that is attached to the core, wherein: the fixation member is made of a first material having a coefficient of thermal expansion larger than a coefficient of thermal expansion of the core, and the base is made of a second material having a coefficient of thermal expansion larger than the coefficient of thermal expansion of the core and smaller than the coefficient of thermal expansion of the fixation member; and an adhesive layer that is disposed between the base and the fixation member, and that bonds the base and the fixation member together.

An inductive element includes a magnetic core, a flat coil wound on a middle column of the magnetic core, and a magnetic plastic package layer covering the magnetic core and the flat coil. Two electrodes connected to two pigtails of the flat coil are exposed outside of the magnetic plastic package layer. The flat coil is configured to enable a width direction of a flat wire of the flat coil to be perpendicular to an axial direction of the middle column of the magnetic core, and the flat wire is stacked layer by layer in the axial direction of the middle column. A manufacturing method for the inductive element is also disclosed herein. By using the wounding method of the flat coil of the inductive element, a height of a product may be reduced while obtaining a same DCR, so that the product is thinner.

An inductor includes a housing composed of an insulating material and a conical coil provided inside the housing. The conical coil is formed of a spirally wound coil conductor. The winding diameter of the conical coil increases in a continuous manner. The coil conductor has a rectangular cross section. Parts of the coil conductor that are adjacent to each other in a winding axis direction of the conical coil are disposed so as to partially overlap when looking in the winding axis direction of the conical coil. The insulating material of the housing is disposed without any gaps along the periphery of the coil conductor.

An inductor includes a coreless coil and terminals connected to end portions of the coreless coil. Positioning portions regulating the position of the coreless coil are formed at the terminals.

A coil assembly including a magnetic core; and a coil including a winding portion formed by winding a flat wire edgewise, wherein opposite end portions of the flat wire extend from the winding portion in the same direction, and the opposite end portions serve as connector connection portions that are to be connected to receiving-side connectors. Such a coil assembly is conductively connected to a circuit board including the receiving-side connector, and is accommodated in an outer case.

An inductor is provided, comprising: a first ferrite core piece and a second ferrite core piece, each of which are made of substantially similar materials, exhibit desired electromagnetic properties, and which are fashioned in a substantially similar manner and shape, and wherein each of the first and second ferrite core pieces comprises a substantially planar mating surface, a center post, and a wire core assembly channel, and wherein a first substantially planar mating surface of the first ferrite core piece is adapted to planarly mate with a second substantially planar mating surface of the second ferrite core piece; and a wire core assembly adapted to be substantially self-locating and self-centering about a first or second center post when located in a respective first or second wire core assembly channel.

An inductor element includes a wire-winding portion and a core portion. In the wire-winding portion, a conductor is wound in a coil shape. The core portion surrounds the wire-winding portion and contains a magnetic powder and a resin. An inner-core central region is a region of the core portion within a distance from a winding axis center of the wire-winding portion toward an existing region of the wire-winding portion in an outward direction perpendicular to the winding axis center. A top-plate central region is a region of the core portion within a distance from the winding axis center toward a no-existing region of the wire-winding portion in the outward direction. Sα−Sβ≥−2% is satisfied, where Sα (%) and Sβ (%) are respectively an area ratio of the magnetic powder in the inner-core central region and the top-plate central region.

An MRIS gradient coil sub-assembly comprising a first coil layer comprising a first conducting coil portion, a second coil layer comprising a second conductive coil portion electrically connected with the first conductive coil portion so that the first and second conductive coil portions act together as one coil, and a B-stage material consolidation layer sandwiched between the first and second coil layers. A method including laminating a first punched sheet metal conductive saddle coil portion and a second punched sheet metal conductive saddle coil portion together by bonding the first and second punched sheet metal conductive saddle coil portions on opposing sides of a B-stage material insulation layer, and electrically connecting the first punched sheet metal conductive saddle coil portion to the second punched sheet metal conductive saddle coil portion in parallel so that the first and second conductive saddle coil portions act together as one saddle coil.