Abstract: A printed circuit board includes: a core substrate including a plurality of core layers; a plurality of magnetic members embedded in each of the plurality of core layers; a first coil pattern disposed on the core substrate; and a second coil pattern disposed below the core substrate.

Abstract: A transformer module and a power module are provided. The transformer module includes: a magnetic core, a first winding and a second winding. The magnetic core includes at least one magnetic column at least partially covered by a multi-layer carrier including a plurality of horizontal copper foils and connecting copper foils. Horizontal copper foils are located on horizontal wiring layers, and connecting copper foils are disposed to connect horizontal copper foils. First and second windings surround the magnetic column, and the second winding is located outside the first winding. Both the first and second windings are formed by a horizontal copper foil and a connecting copper foil; two ends of the first winding are electrically connected to first and second surface-mounted pins; two ends of the second winding are electrically connected to third and fourth surface-mounted pins; these pins are disposed on at least one surface of the transformer module.

Abstract: A method for producing a multilayer coil component includes forming, on a main face of a substrate, a first coil conductor extending along the main face having conductivity, forming a second coil conductor and a third coil conductor apart from each other in a direction in which the first coil conductor extends and each extending from the first coil conductor in a first direction orthogonal to the main face, and forming a fourth coil conductor electrically connected to an end of the second coil conductor opposite to the first coil conductor and extending along the main face. The forming the first coil conductor includes forming, on the main face, a first insulator layer provided with a first penetration portion having a shape corresponding to the first coil conductor and exposing a part of the main face, and forming, by plating, the first coil conductor in the first penetration portion.

Abstract: A method of manufacturing an arrangement for transferring energy from a primary unit conductor arrangement by a magnetic or an electromagnetic field to a secondary unit conductor arrangement in which the field induces an electric voltage, wherein the method comprises the steps: arranging a conductor arrangement selected from the primary unit conductor arrangement and the secondary unit conductor arrangement in a first layer of the arrangement and providing a second layer, so that the second layer is located on a back side of the first layer opposite to a front side of the first layer on which the magnetic or electromagnetic field is transferred or received during operation, wherein the second layer is made of a constituent material, comprising magnetic and/or magnetizable particles dispersed within the constituent material and wherein the magnetic or magnetizable particles are moved with respect to their positions and/or orientations within the constituent material before the constituent material is hard and

Abstract: A system for homing and recharging an unmanned vehicle comprises a plurality of homing layers operative along the radius of an imaginary circle that has the homing target at its center, each homing layer consisting of a sub-system provided with location means of increasing accuracy relative to that of a sub-system that operates along said radius farther away, from the center of said circle.

Abstract: An electronic component includes a multilayer body having a configuration, in which a plurality of insulator layers containing ferrite ceramic are stacked, and a coil having a configuration, in which a plurality of coil conductor layers containing Ag and being disposed on the insulator layers are connected to at least one via hole conductor penetrating the insulator layers in the stacking direction, and having a spiral shape spiraling in the stacking direction. A first pore area ratio of a side gap interposed between an outer circumferential edge of an annular track formed by stacking the plurality of coil conductor layers and an outer edge of the multilayer body, when viewed in the stacking direction, is 9.0% or more and 20.0% or less, and the second pore area ratio of a portion interposed between two coil conductor layers in the stacking direction is 8.0% or less.

Abstract: An inductor is integrated into a multilevel wiring network of a semiconductor integrated circuit. The inductor includes a planar magnetic core and a conductive winding. The conductive winding turns around in generally spiral manner on the outside of the planar magnetic core. The conductive winding is piecewise constructed of wire segments and of VIAs. The wire segments pertain to at least two wiring planes and the VIAs are interconnecting the at least two wiring planes. Methods for such integration, and for fabricating laminated planar magnetic cores are also presented.

Abstract: A filter body of a common mode noise filter includes: a non-magnetic body; a first magnetic body and a second magnetic body sandwiching the non-magnetic body; and a first coil conductor and a second coil conductor of planar shape which are embedded in the non-magnetic body and positioned on the first magnetic body side and second magnetic body side in the non-magnetic body in a manner facing each other in a non-contact state; and also has a non-magnetic first protective part and second protective part which are made of a non-magnetic material whose strength is higher than the first magnetic body and second magnetic body and which are positioned on the outermost side of the filter body in a manner sandwiching the first magnetic body and second magnetic body.

Abstract: Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core.

Abstract: A laminated inductor includes a laminate constituted by multiple insulator layers, and a coil conductor formed in a spiral shape inside the laminate; wherein the coil conductor has conductor patterns formed on the insulator layers, and via hole conductors that penetrate through the insulator layers and electrically connect the multiple conductor patterns; wherein conductor patterns formed on some insulator layers each represent a C-shaped pattern that includes the four corners and has an open part on one side, of a roughly rectangular shape, while a conductor pattern formed on other insulator layer(s) represents a line-shaped pattern corresponding to the open part of one side of the aforementioned C-shaped pattern of the roughly rectangular shape; and wherein an insulator layer on which the C-shaped pattern is formed, and insulator layer(s) on which the line-shaped pattern is formed, adjoin each other at least in one part of the laminate.

Abstract: A coil-type electronic component having a coil inside or on the surface of a base material is characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains inter-bonded via oxide layers, multiple crystal grains are present in each soft magnetic alloy grain, and the oxide layers preferably have a two-layer structure whose outer layer is thicker than the inner layer.

Abstract: A multilayer coil component has an element body, a coil, a pair of first external electrodes, a pair of second external electrodes, a first connection conductor, and a second connection conductor. The coil is composed of a plurality of internal conductors arranged in the element body and connected to each other. The first external electrodes are arranged on a first principal face of the element body. The second external electrodes are arranged on the first principal face. The first connection conductor is arranged between the coil and the first external electrodes in the element body and is connected to one end of the coil and to the first external electrodes. The second connection conductor is arranged between the coil and the second external electrodes in the element body and is connected to the other end of the coil and to the second external electrodes.

Abstract: Disclosed herein is a common mode filter with an ESD protection pattern built therein. The common mode filter includes a base substrate that is made of an insulating material, a first insulating layer that is formed on the base substrate, a coil-shaped internal electrode that is formed on the first insulating layer, a second insulating layer that is formed on the internal electrode, a first external electrode terminal that is formed on the second insulating layer, a first ferrite resin layer that is formed on the second insulating layer and receives the first external electrode terminal, an ESD protection pattern that is formed on the first external electrode terminal, a second external electrode terminal that is formed on the ESD protection pattern, and a second ferrite resin layer that is formed on the first ferrite resin layer and receives the second external electrode terminal.

Abstract: In a planar coil element, the quantitative ratio of inclined particles to total particles of a first metal magnetic powder contained in a metal magnetic powder-containing resin provided in a through hole of a coil unit is higher than the quantitative ratio of inclined particles to total particles of the first metal magnetic powder contained in the metal magnetic powder-containing resin provided in other than the through hole, and many of particles of the first metal magnetic powder in the magnetic core are inclined particles whose major axes are inclined with respect to the thickness direction and the planar direction of a substrate. Therefore, the planar coil element has improved strength as compared to a planar coil element shown in FIG. 9A and has improved magnetic permeability as compared to a planar coil element shown in FIG. 9B.

Abstract: A transformer core manufacturing apparatus for manufacturing an annular transformer core having thin plates formed of magnetic materials laminated includes an uncoiler unit which allows a plurality of uncoilers each having a thin plate magnetic material coiled hoop-like to uncoil the magnetic material, a carrier unit for guiding a plurality of the magnetic materials uncoiled from the plurality of the uncoilers as a single group of magnetic body, a first alignment unit for aligning the carried group of the single magnetic body in a width direction, a cut-off unit for cutting the magnetic body aligned by the first alignment unit in a predetermined dimension, a laminating unit for laminating a plurality of the groups of the magnetic body cut by the cut-off unit, a second alignment unit for aligning the magnetic body laminated on the laminating unit, and a control unit for controlling operations of the above cited units.

Abstract: A method for joining core laminations by adhesive force to form a soft-magnetic laminated core by applying a coating that is wettable with epoxy resin to top sides and undersides of each sheet. The sheets are separated into core laminations made of soft-magnetic sheets, which are stacked to form a core lamination stack, and a cured adhesive introduced in a state of low viscosity into interstices between the core laminations. The core lamination stack has intermediate layers between the core laminations. For this purpose, the core laminations comprise a final-annealed, crystalline CoFe alloy, an adhesive-wettable top side and an adhesive-wettable underside. Together with the intermediate layers, the core laminations form a dimensionally accurate laminated core. The laminated core has a substantially adhesive-free contour consisting of contour surfaces of the core laminations. The adhesive is solvent-free in its low-viscosity state.

Abstract: A group of magnetic sheets are stacked and connected via through-holes, on each of which magnetic sheets a circling pattern having connection parts at its corners and ends is formed to form a spiral coil pattern. Leader patterns each have a leader part formed at a position not overlapping with the circling parts of the coil pattern and connected to an external terminal electrode, as well as two connection parts that continue to the leader part and are formed at positions corresponding to the connection parts of the circling patterns, together with a cutout formed between the two connection parts. Magnetic sheets with the leader patterns are provided at the top and bottom of the laminate forming the coil pattern. The multilayer chip inductor can suppress decrease in core area caused by displacement due to the stacking.

Abstract: An antenna magnetic core of an embodiment has a laminate of a Co-based amorphous magnetic alloy thin strip and a resin layer part having an average thickness in a range of from 1 to 10 ?m. Dispersion of thicknesses of the resin layer part is within ±40% in relation to the average thickness.

Abstract: A layer structure for producing a planar insulation laminate, including the following sequence of planar individual layers arranged one on the other: a B-stage resin, a glass fabric, a core layer made of polyester film, a glass fabric, and a B-stage resin. In the hardened state, an insulation material produced therefrom is suitable, for example, to be used as an insulation barrier between a low-voltage winding and a high-voltage winding of a transformer winding.

Abstract: Disclosed herein are embodiments of devices for measuring electrical current and related systems and methods for forming and using such devices. According to certain embodiments, devices according to the present disclosure may comprise Rogowski coils. Also disclosed are systems and methods for forming a current measuring device using a bobbin that may allow for the use of a continuous length of wire for all windings associated with the current measuring device. Automated manufacturing techniques may be utilized to facilitate the manufacture of devices for measuring electrical current and/or may reduce the cost of such devices. Various embodiments disclosed herein include the use of a bobbin that may be selectively configured between a linear configuration and a closed configuration. One or more current sensors disclosed herein may be utilized in connection with a motor management relay or other type of intelligent electronic device.

Abstract: A laminated electronic component includes a first magnetic material portion, a low-magnetic-permeability portion laminated on the first magnetic material portion, a second magnetic material portion laminated on the low-magnetic-permeability portion, at least one annular or spiral coil disposed within the low-magnetic-permeability portion, and a plurality of columnar magnetic material portions disposed within the low-magnetic-permeability portion so as to extend through inside of the coil and connecting the first magnetic material portion to the second magnetic material portion.

Abstract: A monolithic ceramic electronic component including coil conductors is capable of reducing the number of stacked ceramic layers without sacrifice of the performance of coils and be capable of increasing the number of turns of the coils without increasing the size in. In the monolithic ceramic electronic component, coil conductors having more than one turn for one ceramic layer are formed. The coil conductors include surface coil conductors that are located along surfaces of sequentially stacked ceramic layers and intra-layer coil conductors that are located inside the ceramic layers so as not to extend beyond the thickness of the individual ceramic layers. The surface coil conductors and the intra-layer coil conductors are connected in series with connecting portions therebetween.

Abstract: Three-phase magnetic cores for magnetic induction devices (e.g., transformers, coils, chokes), and methods for manufacturing them, are disclosed. The magnetic cores are generally constructed from three generally rectangular magnetic core frames having a stair-stepped configuration extending along side portions of the frames. The frames are arranged to form a triangular prism structure such that side portions of locally adjacent frames are uniformly engaged to form three core legs over which coils of a three-phase magnetic induction device may be placed.

Abstract: A transformer includes a leg iron core including a plurality of magnetic sheets stacked in one direction (Z axis direction), and a coil wound around the leg iron core. A slit is formed in at least a magnetic sheet which faces an inner peripheral surface of the coil in a stacking direction of the plurality of magnetic sheets, of the plurality of magnetic sheets. Since eddy current is divided by the slit, eddy current density can be reduced. By reducing the eddy current density, loss density in an iron core can be reduced. By reducing the loss density in the iron core, loss in the transformer can be reduced.

Abstract: A magnetics assembly (100) including a transformer (1) made of litz wire. The transformer includes a toroid core (2) and a bundle of wires (3) winding around the toroid core. The bundle of wires includes first to eighth wires, and has a central portion with all eight wires twisted together and winding around the toroid core. First and second ends of the bundle of wires oppositely extend out from the toroidal core. The ends of the first to eighth wires are connected to form a primary and a secondary coils of the transformer, wherein the second ends of the first wire and the second wire, and the first ends of the third wire and the fourth wire are sorted out to form central taps (35, 36) of the primary and secondary coils, respectively.

Abstract: There is provided a laminated inductor including: a body in which a plurality of magnetic layers are stacked; at least one non-magnetic layers interposed between the magnetic layers and including a Al2O3 dielectric material and a K—B—Si-based glass; and a plurality of internal electrodes formed on the magnetic layers.

Abstract: Microfabricated inductors with through-wafer vias and including a first wafer and a second wafer, each wafer having a plurality of metal fillings therein, and a plurality of metal conductors connecting the plurality of metal fillings together to form a spiral. A method for producing an inductor including steps of forming a first plurality of vias in a first substrate, filling the first plurality of vias in the first substrate with a first plurality of metal fillings, forming a first plurality of metal conductors, connecting pairs of the first plurality of metal fillings together using the first plurality of metal conductors to form a spiral, performing the foregoing steps similarly on a second substrate formed with a second plurality of vias filled with a second plurality of metal fillings, and bonding the first substrate with the second substrate.

Abstract: A laminated common-mode choke coil offering higher insulation reliability has a glass ceramic layer, two spiral internal conductors facing each other and sandwiching the glass ceramic layer in between, and insulation layers sandwiching the two internal conductors, wherein the glass ceramic layer contains segregated Al regions and the maximum dimension t1 of each segregated Al region in the glass ceramic layer, in the layer-thickness direction, is no more than 80% of the distance t0 between the two internal conductors.

Abstract: There is provided a multilayered inductor, including: an inductor body; a coil part formed on the inductor body and having a conductive circuit and a conductive via; and external electrodes formed on both end surfaces of the inductor body, wherein the inductor body includes 65 to 95 wt % of a metallic magnetic material and 5 to 35 wt % of an organic material.

Abstract: In a high frequency transformer, when a current flows between input-output ports, a magnetic flux produced by first and third coil conductor patterns of a primary coil is interlinked with a second coil conductor pattern of a secondary coil. A magnetic flux produced by the second coil conductor pattern of the primary coil is interlinked with the first and third coil conductor patterns of the secondary coil. The coil conductor patterns are wound so that when a current flows through a transformer, the directions of magnetic fields occurring within the first and third coil conductor patterns of the primary coil and the second coil conductor pattern of the secondary coil are the same and the directions of magnetic fields occurring within the first and third coil conductor patterns of the secondary coil and the second coil conductor pattern of the primary coil are the same.

Abstract: An electronic component that can be prevented from being mounted on a circuit board with inclination, and a manufacturing method thereof are provided. An electronic component is mountable on a circuit board including a first land and a second land. The electronic component includes outer electrodes on a lower surface of a stack to be arranged along a direction and are connectable to the first land and the second land, respectively. With the electronic component mounted to the circuit board, respective contact surfaces of the outer electrodes to the first land and the second land have a structure being symmetric about a line parallel to the direction, and each respective contact surface is divided into a plurality of portions.

Abstract: A laminated electronic component with adjacent wires (such as coil conductors) in insulator layers inter-connected through via holes, wherein its laminate is structured in such a way that a coil-embedded layer constituted by first insulator layers and second insulator layers laminated alternately is sandwiched between a top magnetic layer and bottom magnetic layer, with external electrodes formed on both end faces. First coil conductors are formed on the first insulator layers and second coil conductors are formed on the second insulator layers, with these coil conductors connected through via holes. Formed at the end of each second coil conductor is a connection conductor of a size sufficiently large to block off the top of the via hole provided in the insulator sheet.

Abstract: An electronic component that can be prevented from being shifted from a normal mount position and can be manufactured with a low cost is provided. The component is configured by stacking a plurality of insulating layers and a plurality of inner conductors provided on the respective insulating layers. The connection conductors have respective exposure portions that are each exposed between corresponding ones of the insulating layers at a surface of the stack. An outer electrode is formed, for example, by plating on the lower surface so that the exposure portions are covered with the outer electrode. The plurality of exposure portions do not have uniform thicknesses or are not arranged at uniform intervals in the stacking direction.

Abstract: The invention provides an amorphous alloy stereo wound-core, comprising three structurally identical amorphous alloy made square frames; the cross section of the sides of the frames is in an approximately semi-circular or semi-polygonal shape; the frames have semi-circular cross sections and uniform thicknesses; the vertical sides of every two adjacent frames fit together fixedly to form a core pillar, the horizontal sides of the frames form iron yokes; the cross section of each core pillar has a circular or regular-polygonal shape. With this structure, the magnetic conduction direction of the amorphous alloy is completely consistent with the magnetic circuit direction of the core, and its working vibration is small. This core structure guarantees balanced three-phase power supply and largely reduces the magnetic resistance and excited current. There is no seam in the amorphous alloy stereo wound-core, so there is no area with high energy consumption.

Abstract: There is provided a multi-layered chip electronic component, including: a multi-layered body including a plurality of first magnetic layers on which conductive patterns are formed; and second magnetic layers interposed between the first magnetic layers within the multi-layered body, wherein the conductive patterns are electrically connected to form coil patterns in a stacking direction, and when a thickness of the second magnetic layer is defined as Ts and a thickness of the conductive pattern is defined as Te, 0.1?Ts:Te?0.3 is satisfied.

Abstract: A coil-type electronic component has a coil inside or on an outer surface of its base material and is characterized in that: the base material is constituted by a group of grains of a soft magnetic alloy containing iron, silicon and other element that oxidizes more easily than iron; the surface of each soft magnetic alloy grain has an oxide layer formed on its surface as a result of oxidization of the grain; the oxide layer contains the other element that oxidizes more easily than iron by a quantity larger than that in the soft magnetic alloy grain; and grains are bonded with one another via the oxide layer.

Abstract: An electronic component has a drum-shaped core member constituted by an assembly of soft magnetic alloy grains containing iron (Fe), silicate (Si) and chromium (Cr), a coil conductive wire wound around the core member, a pair of terminal electrodes connected to ends of the coil conductive wire, and an outer sheath resin part covering the wound coil conductive wire and constituted by a magnetic powder-containing resin; wherein there is an area where only the resin material in the magnetic powder-containing resin is permeated from the surface of the core member to a specified depth.

Abstract: A coil-type electronic component has a coil inside or on the surface of its base material and is characterized in that: the base material is constituted by a group of grains of a soft magnetic alloy containing iron, silicon and other element that oxidizes more easily than iron; the surface of each soft magnetic alloy grain has an oxide layer formed on its surface as a result of oxidization of the grain; this oxide layer contains the other element that oxidizes more easily than iron by a quantity larger than that in the soft magnetic alloy grain; and grains are bonded with one another via this oxide layer.

Abstract: An annular core member having an opening portion located at a position rotated by 90 degrees from a reference position, where the opening portion is oriented in the counterclockwise direction, and an annular core member having the opening portion located at the reference position, where the opening portion is oriented in the clockwise direction, are prepared to form an iron core by a rotary lamination apparatus by rotating the annular core members and by a predetermined angle (90 degrees) such that a first end, in the annular core member, which is at the position rotated by 90 degrees from the reference position and has no rotation uneven part, is circumference-positionally identical in the laminating direction with that of a fourth end, in an annular core member, which is at the reference position and has no rotation uneven part.

Abstract: A laminated inductor includes: a laminate constituted by multiple insulator layers; external electrodes formed on the outside of the laminate; and a coil conductor formed spirally inside the laminate, wherein the coil conductor has leaders that electrically connect to the external electrodes and a coil body other than the leaders, wherein the coil conductor has conductive patterns formed on the insulator layers, and via hole conductors that penetrate through the insulator layers and electrically connect the multiple conductor patterns, wherein all of the conductor patterns constituting the coil body are either a C-shaped pattern or line-shaped pattern, wherein the coil body has a partial structure where two or more C-shaped pattern layers are stacked together successively, and wherein the number of C-shaped patterns in the coil body is greater than that of line-shaped patterns.

Abstract: Power conversion systems and integrated multi-phase chokes providing high common mode to differential mode choke inductance ratios with circular and triangular shapes for concurrent differential filtering and common-mode voltage blocking in motor drives and other power conversion applications.

Abstract: An electronic component and manufacturing method for preparing an electronic component includes providing a first insulator layer having a first nickel content rate. A coil conductor and a second insulator layer having a first bismuth content rate and a second nickel content rate higher than the first nickel content rate are provided on the first insulator layer. The first insulator layer, the coil conductor, and the second insulator layer constitute a first unit layer. The first unit layer and an exterior insulator layer are laminated to obtain a laminate. After a step of firing the laminate, a nickel content rate in a first portion of the first insulator layer, the first portion being sandwiched between the coil conductors from both sides facing in a lamination direction, is lower than a nickel content rate in a second portion of the first insulator layer other than the first portion.

Abstract: A laminated inductor, which offers high inductance while suppressing increase in direct-current resistance, has a rectangular solid laminate and a pair of terminal electrodes formed only on the bottom face of the laminate, wherein a folded conductor piece is provided on the first magnetic layer in a manner constituting around one turn worth of the windings, with one end placed near the first corner and the other end placed at a position toward the center and away from this one end so as not to overlap with the one end, while one of multiple sets of coil conductor pieces, each set constituting around one turn worth of the windings, is placed on multiple magnetic layers in the laminate.

Abstract: A protective coating system for application to exposed surfaces of a transformer core prevents corrosion of the core. The protective coating is suitable for use in industrial and marine environments where many factors impact the life of the transformer core. The protective coating comprises at least three coating layers. The first coating layer is an inorganic zinc silicate primer. The second coating layer is a polysiloxane. The third coating layer is a room temperature or high temperature vulcanizing silicone rubber. A silicone rubber sealant may be further applied to outer edge surfaces of the core.

Abstract: A laminated inductor having an internal conductive wire forming region, as well as a top cover region and bottom cover region formed in a manner sandwiching the internal conductive wire forming region between top and bottom; wherein the internal conductive wire forming region has a magnetic part formed with soft magnetic alloy grains, as well as helical internal conductive wires embedded in the magnetic part and constituted by a conductor; and at least one of the top cover region and bottom cover region (or preferably both) is/are formed with soft magnetic alloy grains whose constituent elements are of the same types as those of, and whose average grain size is greater than that of, the soft magnetic alloy grains constituting the magnetic part in the internal conductive wire forming region.

Abstract: A rapidly quenched Fe-based soft-magnetic alloy ribbon having wave-like undulations on a free surface, the wave-like undulations having transverse troughs arranged at substantially constant intervals in a longitudinal direction, and the troughs having an average amplitude D of 20 mm or less, is produced by a method comprising (a) keeping a transverse temperature distribution in a melt nozzle within ±15° C. to have as small a temperature distribution as possible in a melt paddle of the alloy, and (b) forming numerous fine linear scratches on a cooling roll surface by a wire brush, thereby providing a ground surface of the cooling roll with an arithmetical mean (average) roughness Ra of 0.1-1 ?m and a maximum roughness depth Rmax of 0.5-10 ?m.

Abstract: There is provided a chip-type coil component, including: a body formed by laminating a plurality of magnetic layers, and having a lower surface provided as a mounting area, an upper surface corresponding thereto, two end surfaces, and two lateral surfaces; conductor patterns formed on the magnetic layers, respectively, and connected to each other to have a coil structure; and external electrodes formed on at least one external surface of the body, and electrically connected to the conductor patterns, the external electrodes each being formed on the lower surface and spaced apart from edges thereof. Short circuits between electronic components may be prevented and sticking strength between the chip-type coil component and a substrate may be increased.

Abstract: An iron core includes an electromagnetic steel plate having a first region on the surface of which an insulating film is formed and a second region which is not covered with the insulating film and exposed, and a coating member which coats at least the second region. The second region is formed by removing the insulating film by machining.

Abstract: Provided is a laminated inductor having a magnetic body, a conductor part covered in a manner directly contacting the magnetic body, and external terminals provided on the outside of the magnetic body and conducting to the conductor part; wherein the magnetic body is a laminate constituted by layers containing soft magnetic alloy grains, and the soft magnetic alloy grain contacting the conductor part is flattened on the conductor part side.

Abstract: A laminated inductor having a laminate structure constituted by magnetic layers and internal conductive wire-forming layers, wherein the magnetic layer is formed by soft magnetic alloy grains, the internal conductive wire-forming layer has an internal conductive wire and a reverse pattern portion around it, and the reverse pattern portion is formed by soft magnetic alloy grains whose constituent elements are of the same types as those of, and whose average grain size is greater than that of, the soft magnetic alloy grains constituting the magnetic layer.