Disclosed herein is a coil component that includes a plurality of conductor layers including first, second, third, and fourth conductor layers stacked one on another in this order. First and third planar spiral coils are formed in the first and third conductor layers. A second planar spiral coil is formed in the second and fourth conductor layers. A pattern width of the second planar spiral coil formed in the second conductor layer is smaller than that of the second planar spiral coil formed in the fourth conductor layer, or a pattern width of each of the first and third planar spiral coils formed in the third conductor layer is smaller than that of each of the first and third planar spiral coils formed in the first conductor layer.

Disclosed herein is a coil component that includes first, second, third, and fourth terminal electrodes; a first planar spiral coil formed on a substrate, the first planar spiral coil having an outer peripheral end connected to the first terminal electrode; a second planar spiral coil stacked on the first planar spiral coil through a first insulating layer, the second planar spiral coil having an outer peripheral end connected to the second terminal electrode; and first and second lead-out patterns stacked on the second planar spiral coil through a second insulating layer. The first lead-out pattern connects the third terminal electrode and an inner peripheral end of the first planar spiral coil. The second lead-out pattern connects the fourth terminal electrode and an inner peripheral end of the second planar spiral coil. The second insulating layer is thicker than the first insulating layer.

An inductor component comprising a single-layer glass plate of a rectangular parallelepiped shape with a width, a length longer than the width, and a height, and having a bottom surface defined by the length and width and a top surface positioned on a back side of the bottom surface; bottom-surface and top-surface conductors disposed above the bottom and top surfaces, respectively; through wirings each extending through a corresponding one of through holes formed in the glass plate; an underlying insulation layer above the bottom-surface conductors; and first and second terminal electrodes above the underlying insulation layer. The bottom-surface and top-surface conductors, and the through wirings are electrically connected as a circularly extending wiring that circularly extends around a winding axis parallel to the bottom surface and the length. The circularly extending wiring, and the first and second terminal electrodes, are electrically connected to each other as an inductor element.

An inductor structure includes a first connecting component, a second connecting component, and a center-tap terminal. In the inductor structure, a first port of the first connecting component is coupled to a first wire, and a second port of the first connecting component is coupled to a second wire. The second connecting component disposed above or beneath the first connecting component in an interlaced manner. The center-tap terminal is coupled to one of the first connecting component and the second connecting component. The center-tap terminal is disposed on a layer that is different from the layer where the first connecting component is disposed or the layer where the second connecting component is disposed.

An inductor device includes an 8-shaped inductor structure, a first spiral wire, a first connector, a second connector, and a first interlaced component. The 8-shaped inductor structure includes two first-wires and two second-wires. The first spiral wire is disposed on an inner side of the two first-wires. The first connector is coupled to one of the two first-wires and one of the two second-wires. The second connector is coupled to another one of the two first-wires. The first interlaced component is coupled to the first spiral wire and another one of the two second-wires, and the first interlaced component is coupled to the first connector and the second connector in an interlaced manner respectively.

A thin inductor component includes an element body having a principal surface and a side surface perpendicular to the principal surface. An inductor wire extends in parallel with the principal surface. From the inductor wire, a first vertical wire extends in a direction toward the principal surface, and a first support wire extends in parallel with the principal surface. The first vertical wire and the first support wire are connected to a first pad of the inductor wire. When a virtual tangent is drawn at a connection point of the inductor wire main body to the first pad with respect to the center axis of the wire main body when viewed from the thickness direction, the first support wire extends from the first pad in parallel with the virtual tangent and the center axis of the first support wire and the virtual tangent are located on different straight lines.

An inductor device includes a first trace, a second trace, and a capacitor. The first trace includes at least two sub-traces. One terminal of each of the at least two sub-traces are coupled to each other at a first node. The second trace includes at least two sub-traces. One terminal of each of the at least two sub-traces are coupled to each other at a second node. The capacitor is coupled to the firs node and the second node.

A semiconductor structure includes a first inductor, a second inductor, and a first input/output (I/O) pad. The first I/O pad is coupled to the first inductor and the second inductor. The first I/O pad, a first central axis of a first magnetic field of the first inductor, and a second central axis of a second magnetic field of the second inductor are disposed sequentially along a first direction.

A compact inductor component includes an element body having a principal surface. A first inductor wire and a second inductor wire extend in parallel with the principal surface in the element body. The number of turns of the second inductor wire is 0.25. The first inductor wire includes a first wire main body extending linearly. The second inductor wire includes a second wire main body extending linearly. The wire length of the second wire main body in the second inductor wire is 1.2 times or more the wire length of the first wire main body in the first inductor wire.

An inductor component that causes no electric current to be flowed between external terminals until the inductor component is mounted on a substrate, for example, and includes an element body and an inductor wire that extends in the inside of the element body. To the inductor wire, a first vertical wire is connected. The top surface of the first vertical wire is exposed from the principal surface of the element body. On the top surface of the first vertical wire, a first external terminal is stacked. The first external terminal has a first conducting portion and a first insulating portion. The first conducting portion is insulated from the outside of the element body by the first insulating portion.