In the multi-layer inductor, a through conductor provided in a sintered element body includes a pair of extracting conductors and a pair of internal conductors, and an end portion of the extracting conductor and an end portion of the internal conductor overlap each other in a stacking direction of the element body. Thus, the amount of shrinkage of each conductor during sintering of the element body is reduced, and internal stress generated in the element body after sintering is prevented.

An inductor and an integrated circuit are provided. The inductor includes a first coil, a second coil, and a third coil. The first coil has a first input terminal and a first output terminal, and the first coil is winded in a first direction from the first input terminal to the first output terminal. The second has a second input terminal and a second output terminal, and the second coil is winded in a second direction which is opposite to the first direction from the second input terminal to the second output terminal. The third has a third input terminal and a third output terminal, and the third input terminal is connected to the first input terminal and the second input terminal.

The disclosure relates to systems and methods for fabricating printed circuit board (PCB) based transformers and/or coreless PCB-based circuits containing one or more coil inductor(s). More specifically, the disclosure is directed to systems and methods for fabricating PCB-based transformers and/or inductors having concentric or eccentric (non-concentric) continuous or concatenated coil architecture.

An inductor includes a first metallization layer multi-turn trace. The inductor also includes a second metallization layer multi-turn trace coupled to the first metallization layer multi-turn trace through at least one first via. The inductor further includes a plurality of discrete third metallization layer trace segments coupled to the second metallization layer multi-turn trace through a plurality of second vias.

A semiconductor element includes a first coil substantially located at a first plane; a second coil substantially located at the first plane; a connecting section that connects the first coil and the second coil; a third coil substantially located at a second plane different from the first plane; and a fourth coil substantially located at the second plane. The third coil and the first coil are connected through a through structure, and the fourth coil and the second coil are connected through a through structure. The third coil and the fourth are not directly connected.

The multilayer inductor includes a multilayer body including a plurality of insulating layers laminated in a lamination direction, and a plurality of coil groups arranged in the multilayer body along the lamination direction and connected in series. Each of the coil groups includes a plurality of coil patterns respectively provided on the insulating layers and laminated in the lamination direction, and is configured by connecting a plurality of pattern groups in series. Each of the pattern groups is formed by connecting n (n is a positive integer) coil patterns in parallel. The number of parallels n of at least one of the coil groups is different from the number of parallels n of another coil group. The insulating layers include magnetic and non-magnetic insulating layers. At least one of the insulating layers adjacent to one of the coil patterns is the non-magnetic insulating layer.

A common mode choke coil includes a body, a first spiral conductor, a second spiral conductor, a first extension conductor, and a second extension conductor. The thickness of the first extension conductor is equal to or less than (thickness of the first spiral conductor)/(winding number of the first spiral conductor), and the width of the first extension conductor is equal to or more than (width of the first spiral conductor)×(thickness of the first spiral conductor)/(thickness of the first extension conductor). The thickness of the second extension conductor is equal to or less than (thickness of the second spiral conductor)/(winding number of the second spiral conductor), and the width of the second extension conductor is equal to or more than (width of the second spiral conductor)×(thickness of the second spiral conductor)/(thickness of the second extension conductor).

An inductor device includes a first trace, a second trace, and at least one connection member. The first trace is disposed on a first area. The second trace is disposed on a second area. The first area and the second area are coupled to each other at a junction. The at least connection member is disposed at a block at which the first trace and the second trace are not disposed and which is adjacent to the junction, and the at least connection member is coupled to the first trace and the second trace.

Disclosed herein is a coil component that includes a first conductor layer having first and third planar spiral coils and second conductor layer having second planar spiral coil. The first planar spiral coil is positioned on an outer peripheral side of the third planar spiral coil. The first planar spiral coil has a pattern width larger than that of the third planar spiral coil. The second planar spiral coil is offset to the third planar spiral coil side in a plan view.

A multilayer coil component includes an element body containing a plurality of metal magnetic particles and a resin existing between the plurality of metal magnetic particles and a coil disposed in the element body and configured to include a plurality of electrically interconnected coil conductors. At least one of the plurality of coil conductors has a spiral shape and has conductor portions adjacent to each other when viewed from a direction along a coil axis of the coil. The conductor portion includes a straight conductor portion extending in a straight line and a connecting conductor portion connecting the straight conductor portion and constituting a corner portion of the coil conductor. The metal magnetic particles between the connecting conductor portions adjacent to each other are lower in density than the metal magnetic particles between the straight conductor portions adjacent to each other.