Tdk Corporation

Yuto Shiga

Kazuya Tobita

Youichi Kazuta

Noriaki Hamachi

Hajime Kato

Junichiro Urabe

Toshinori Matsuura

Yuichi Takubo

Yuya Ishima

Shunji Aoki

Satoru Okamoto

Makoto Yoshino

Munehiro Takaku

Shinichi Sato

Seiichi Nakagawa

Masashi Shimoyasu

Mamoru Kawauchi

Mitsuru Ito

Shigetoshi Kinouchi

Asami Takahashi

Shinichi Kondo

Masaki Takahashi

Makoto Takahashi

Takashi Endo

Hidekazu Sato

Yoji Tozawa

Yasushi Matsuyama

Masahiro Kato

Shougo Okamoto

Shunya Suzuki

Takafumi Takahashi

So Kobayashi

Xuran Guo

A multilayer coil component includes an element body, a coil, and an external terminal. The element body includes a plurality of insulator layers that is laminated. The coil is disposed in the element body. The external terminal includes a plurality of conductor layers that is laminated. The external terminal is electrically connected to the coil. The element body includes a main face and a first side face adjacent to the main face. The external terminal is embedded in the element body in such a way as to be separated from the first side face and exposed from the main face. The external terminal includes a first separated face that is separated from the first side face as being separated from the main face.

Multilayer coil component

A multilayer coil componentincludes an element body, a coil, a first terminal electrode, a second terminal electrode, a first connection conductor, and a second connection conductor. The coilincludes a first coil portionthat has one end of the coiland is disposed on a side of a main surfaceand a second coil portionthat has the other end of the coiland is disposed on a side of the main surface. A distance Lbetween the first connection conductorand the second coil portionis larger than a distance Lbetween the first connection conductorand the first coil portion

In a multilayer coil component, a coil is disposed in an element body. The coil includes a plurality of coil conductors. The plurality of coil conductors include first, second, and third end portions. The first, second, and third end portions are exposed from the element body on a first surface and connected to a first external electrode. The first, second, and third end portions are arranged in order in a first direction when viewed from a second direction along the first surface and orthogonal to the first direction. The first end portion and the third end portion overlap each other when viewed from the first direction at least in part. Each of the first end portion and the third end portion has a region not overlapping the second end portion when viewed from the first direction.

A multilayer coil component includes: a through hole connecting portion electrically connecting an end portion of the coil portion and the external terminal, in which a coil pattern and a through hole pattern are formed in each of the plurality of layers, the through hole connecting portion is formed by mutually joining a plurality of the through hole patterns in the lamination direction, the through hole pattern in at least one first layer among the plurality of layers is shifted with respect to the through hole pattern in another second layer when viewed from the lamination direction, and, when viewed from the lamination direction, a distance between the through hole pattern in the first layer and a coil pattern in the first layer is farther than a distance between the through hole pattern in the second layer and the coil pattern in the first layer.

A coil component includes an exterior body, a coil, and a pair of terminal electrodes. The coil is disposed inside the exterior body. The pair of terminal electrodes are electrically connected to the coil and are disposed on the exterior body. The exterior body includes a first portion that covers the coil and is made of a resin, and a second portion including a side surface on which the pair of terminal electrodes are disposed. The second portion includes a material having a relative permittivity lower than a relative permittivity of the resin and is disposed between the coil and the pair of terminal electrodes.

Coil component and method for making coil component

A multilayer inductor includes: an element body formed by stacking a plurality of layers of insulators in a stacking direction; a terminal electrode provided on at least one side surface of the element body; and a linear conductor portion provided in the element body and extending in a first direction, wherein, as viewed from a second direction perpendicular to the first direction, the conductor portion has a first portion in a region overlapping the terminal electrode and a second portion in a region not overlapping the terminal electrode, and wherein a width of the first portion as viewed from the second direction is smaller than a width of the second portion.

Multilayer inductor and mounting structure of multilayer inductor

A multilayer coil component includes an element body, a coil, and a terminal electrode. The element body includes a first main face, second main face, first end face, second end face, first side face and second side face. The terminal electrode is connected to the coil. The terminal electrode includes a main-face electrode portion provided on the first main face. The coil includes a plurality of coil conductors. The plurality of coil conductors includes a first coil conductor disposed closest to the first main face to oppose to the main-face electrode portion and a second coil conductor disposed closer to the second main face than the first coil conductor. The first coil conductor has a width narrower than a width of the second coil conductor. The first coil conductor has an aspect ratio higher than an aspect ratio of the second coil conductor.

A multilayer coil component includes an element body, a coil disposed in the element body, and an external electrode disposed in the element body and electrically connected to the coil. The element body includes a principal surface that is a mounting surface, and an end surface positioned adjacent to the principal surface and extending in a direction crossing to the principal surface. The external electrode includes an underlying metal layer and a conductive resin layer. The underlying metal layer is formed on the principal surface and the end surface. The conductive resin layer is formed to cover the underlying metal layer. A thickness of the conductive resin layer at an end positioned above the principal surface of the underlying metal layer is equal to or greater than 50% of a maximum thickness of a portion positioned above the principal surface of the conductive resin layer.

In a coilof a multilayer coil component, an end portionof a turnclosest to a side surfacein the facing direction of the side surfaceand a side surfaceis connected to a first external electrodeand an end portionof a turnclosest to the side surfacein the facing direction is connected to a second external electrode. When viewed from the facing direction, the area of the region where the turnand the second external electrodeface each other and the area of the region where the turnand the first external electrodeface each other are larger than the area of the region where turns other than the turnand the turnand the first external electrodeor the second external electrodeface each other.

Coil component

A multilayer coil component includes an element assembly that has a first surface and second surfaces and extending in a direction orthogonal to the first surface, and terminal electrodes that has first electrode parts extending in a direction orthogonal to the first surface along the second surfaces. At least a portion of the first electrode parts of the terminal electrodes is disposed inside the element assembly. The element assembly is present between imaginary lines extending in a direction parallel to the first surface toward the second surfaces from a position farthest from the first surface in a direction orthogonal to the first surface in the first electrode parts positioned inside the element assembly and the first surface.

A multilayer coil component includes an element body, a coil disposed in the element body, and a terminal electrode disposed on the element body. The element body has a first side face and a second side face, a first end face and a second end face, and a first main face and a second main face. The terminal electrode includes a first electrode portion and a second electrode portion. The first electrode portion has a first exposed face exposed on the first main face. The second electrode portion has a second exposed face exposed on the first end face. The first exposed face and the second exposed face are adjacent to each other interposing a ridge portion. The first exposed face is separated from an outer edge of the first main face. The second exposed face is separated from an outer edge of the first end face.

A first dimension of each of a first connection portionand a second connection portionin the direction in which a pair of side surfacesandface each other is smaller than an inner diameter Wof a coilin the direction and is larger than a width Wof each of a plurality of coil conductors in the direction. A second dimension of each of the first connection portionand the second connection portionin the direction in which a pair of main surfacesandface each other is larger than a thickness Hof each of the plurality of coil conductors in the direction and is smaller than a height Hof the coilin the direction.

In a coilof a multilayer coil component, an end portionof a turnclosest to a side surfacein the facing direction of the side surfaceand a side surfaceis connected to a first external electrodeand an end portionof a turnclosest to the side surfacein the facing direction of the pair of side surfacesandis connected to a second external electrode. The area at which the turnfaces the second external electrodeand the area at which the turnfaces the first external electrodeare smaller than the area at which turnsandother than the turnand the turnface the first external electrodeor the second external electrode

A multilayer coil componentincludes an element body, a coil, and a terminal electrodeand a terminal electrode. Each of the terminal electrodeand the terminal electrodeis disposed over at least the end surfacesandand a main surface. Each of the terminal electrodeand the terminal electrodeand at least a part of the coiloverlap when viewed from the facing direction of the pair of side surfacesand. Each of the terminal electrodeand the terminal electrodeand the coildo not overlap when viewed from the facing direction of the pair of end surfacesand

In a multilayer coil component, a coilincludes a first connection partand a second connection part, the first connection partis connected to one end part of the coil, which part is placed on a side of one principal surface, and is arranged in an identical dielectric layerwith a conductorincluded in the one end part, the second connection partis connected to the other end part of the coil, which part is placed on a side of the other principal surface, and is arranged in an identical dielectric layerwith a conductorincluded in the other end part, and recessed partsandand recessed partsandare respectively provided in the first terminal electrodeand the second terminal electrodein the element body

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Tokyo, Japan

Yuto Shiga