An inductor component comprising a first magnetic layer and a second magnetic layer containing a resin, a substrate of a sintered body having a first principal surface in close contact with the first magnetic layer and a second principal surface above which the second magnetic layer is disposed, and a spiral wiring disposed between the second magnetic layer and the substrate.

A coil component includes a body; a coil portion disposed inside the body; a noise removal portion disposed to contact a surface of the body; an insulating layer disposed inside the noise removal portion; first and second external electrodes each connected to the coil portion and disposed on the insulating layer to overlap the noise removal portion; and a third external electrode disposed to be spaced apart from the first and second external electrodes and contacting the noise removal portion.

Disclosed herein is a coil component that includes: a coil part including a coil conductor embedded in the magnetic element body and a bump electrode embedded in the magnetic element body through a second insulating resin layer and connected to an end portion of a coil conductor. A side surface of the bump electrode at a mounting surface is covered with the second insulating resin layer. The second insulating resin layer covering the side surface of the bump electrode has a first area having a first width in a planar direction parallel with the mounting surface and a second area having a second width in the planar direction larger than the first width.

In an inductor component, an inductor wire is formed inside a main body. The inductor wire has a circular columnar body extending in the height direction. An end surface of the inductor wire at a first end in the wire extending direction serves as a first external terminal and is exposed at a first terminal surface of the main body. The first external terminal is exposed only at the first terminal surface. An end surface of the inductor wire at a second end in the wire extending direction serves as a second external terminal and is exposed at a second terminal surface of the main body. The second external terminal is exposed only at the second terminal surface.

A device includes a substrate; a magnetic core in the substrate and including a hole; a first winding extending through the hole and around the magnetic core; and a second winding extending through the hole, around the magnetic core, and around a portion of the first winding. The first and the second windings only extend around the same half of the magnetic core.

An electronic component includes an insulator portion in which insulating layers are laminated; inner conductors each having a strip shape and embedded in the insulator portion; and first and second external electrodes which face an outer surface of the insulator portion and are electrically connected to the inner conductors. Also, from 3 to 5 of the inner conductors are provided and the inner conductors being laminated with the insulating layers interposed therebetween, a total sectional area of the inner conductors is from 0.1 mm.sup.2 to 0.5 mm.sup.2, and when a thickness and a width of the inner conductor are designated as t1 and w4, respectively, a distance between the inner conductors is designated as t2, t1/w4 is designated as x, and t2/t1 is designated as y. When the number of the inner conductors is 3, (x,y) is a region surrounded by A(0.051,1.0), B(0.051,5.9), C(0.2,5.9), D(0.2,4.4), and E(0.1,1.4).

An electronic component includes an insulator portion in which insulating layers are laminated; inner conductors each having a strip shape and embedded in the insulator portion; and first and second external electrodes which face an outer surface of the insulator portion and are electrically connected to the inner conductors. The insulator portion has upper and lower surfaces facing each other, first and second end surfaces facing each other, and first and second side surfaces facing each other. Each of the inner conductors has a first main surface which is a main surface on the upper surface side and a second main surface which is a main surface on the lower surface side. The inner conductors are laminated with the insulating layers interposed therebetween. Each inner conductor has a line portion and a first extended portion and a second extended portion located at both ends of the line portion.

Sensing methods and systems for transformers, and the construction thereof, are described herein. Example transformer systems and example methods for constructing a core for the system are disclosed. The example system includes a core with a bottom plate, two or more limbs mounted to the bottom plate and a top plate enclosing the core. At least one of the bottom plate, the limbs and the top plate is formed with a sensing component therein. The sensing component can be mounted to a spacer layer assembled within a stack of laminated layers. The sensing component can be mounted within a path defined within the spacer layer, for example. Methods for detecting operating conditions within the transformer are also disclosed.

A region of a sealing part is effectively utilized. -A semiconductor device includes a semiconductor element, a substrate, a sealing part, and a cavity region. The substrate included in this semiconductor device is disposed adjacent to a bottom surface of the semiconductor element. The sealing part included in this semiconductor device is formed in a shape that covers an upper surface that is a surface facing the bottom surface of the semiconductor element, and seals the semiconductor element. The cavity region included in this semiconductor device is a region disposed in the sealing part and formed with a cavity.

A coil element according to one embodiment includes: an insulator body including first insulating layers and second insulating layers laminated in a stacking direction; first conductive patterns formed on the first insulating layers; and second conductive patterns formed on the second insulating layers. The insulator body includes a first end region situated at a top in the stacking direction, a second end region situated at a bottom in the stacking direction, and an intermediate region situated between the first end region and the second end region. The insulator body includes a first portion and a second portion that is an area other than the first portion. The first portion covers upper and lower surfaces of one or more intermediate first conductive patterns in the intermediate region among the plurality of first conductive patterns. The electrical resistivity of the first portion is higher than that of the second portion.