Tdk Corporation

Jeol Ltd.

Nihon Denshi Kabushiki Kaisha

Sony Corporation

E.i. Dupont De Nemours and Company

Seiichi Nakagawa

Shinichi Sato

Shinichi Kondo

Masashi Shimoyasu

Yusuke Nagai

Yoji Tozawa

Mitsuru Ito

Takashi Suzuki

Makoto Yoshino

Kazuhiro Ebina

Akihiko Oide

Kazuhiro Miura

Mamoru Kawauchi

Mitsuharu Koike

Shigetoshi Kinouchi

Takahiro Sato

Takashi Endo

Yuto Shiga

Kunihiko Kawasaki

Setsuo Norioka

Naoki Date

Daiki Kato

Hiroshi Ono

Minoru Takeda

Yuya Ishima

Noriaki Hamachi

Kouichi Kakuda

Yuichi Aki

Akira Yonezawa

Ryuichi Wada

Barry Edward Taylor

Satoshi Kurimoto

Ko Onodera

Naoki Uchida

Tadashi Hattori

Tetsuo Abe

Toshiaki Miyokawa

Kuninori Okamoto

Motohiko Tsuchiya

Keito Yasuda

Kenta Sasaki

Kouki Okawauchi

Hironori Fujita

Youichi Shibuki

Masatsugu Kikuchi

Takayoshi Ikeda

Yoshio Ishimori

A multilayer coil component includes: an element body containing a plurality of metal magnetic particles; a coil disposed in the element body; and an external electrode disposed on a surface of the element body and electrically connected to the coil. At least a part of a void part between the metal magnetic particles in the element body is filled with a first resin, the external electrode has a resin electrode containing a second resin and a conductor powder dispersed in the second resin, and the second resin connected from the resin electrode extends into the element body.

Multilayer coil component

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.

A multilayer conductor component includes an element body, an internal conductor, and an external electrode. The external electrode includes a sintered metal layer. The sintered metal layer is disposed on an end surface, a pair of side surfaces, a first main surface, and a second main surface of the element body. An electrode length, which is a length in the first direction from an edge of the sintered metal layer to a reference plane including the end surface, at a central portion of the first main surface in the third direction, is shorter than the electrode length at each of the ridge portions. The electrode length at a central portion of each of the pair of side surfaces in the second direction is equal to or less than the electrode length at each of the ridge portions.

Multilayer inductor component

A multilayer inductor component includes an element body, an internal conductor, and an external electrode. The internal conductor is disposed in the element body. The external electrode is disposed on a surface of the element body and electrically connected to the internal conductor. The external electrode includes a sintered metal layer and a plating layer. The sintered metal layer is disposed on the surface of the element body. The plating layer covers the sintered metal layer. The sintered metal layer includes a thick portion and thin portions. The thick portion covers the surface of the element body. A plurality of glass particles is dispersed in the thick portion. The thin portions cover glass particles exposed on a surface of the thick portion among the plurality of glass particles and being in contact with the plating layer.

A multilayer coil component includes an element body including a plurality of metal magnetic particles, and a plurality of coil conductors. The plurality of coil conductors is disposed in the element body. The plurality of coil conductors is separated from each other in a predetermined direction and electrically connected to each other. The plurality of coil conductors includes one pair of side surfaces opposing each other in the predetermined direction. Surface roughness of the one pair of side surfaces is less than 40% of an average particle size of the plurality of metal magnetic particles.

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.

A multilayer coil component includes an element body and a plurality of coil conductors. The element body includes a plurality of metal magnetic particles and resin existing between the plurality of metal magnetic particles. The plurality of coil conductors is disposed in the element body, the plurality of coil conductors being separated from each other in a predetermined direction and electrically connected to each other. The plurality of metal magnetic particles included in the element body includes a plurality of metal magnetic particles having a particle size equal to or greater than one third of a distance between the coil conductors adjacent to each other in the predetermined direction and equal to or less than a half of the distance. Between the coil conductors adjacent to each other in the predetermined direction, the metal magnetic particles having the particle size are distributed along the predetermined direction.

An element body includes a first function portion including a first material, a second function portion including a second material different from the first material, and an intermediate portion placed between the first function portion and the second function portion. The intermediate portion includes a first component included in the first material, and a second component included in the second material. A side surface of the element body includes surfaces of the first function portion, the second function portion, and the intermediate portion. Each of terminal electrodes includes electrode portion formed on the side surface across the surfaces of the first function portion, the second function portion, and the intermediate portion. An insulating layer is formed on the side surface in such a manner as to be in contact with at least a region exposed from the electrode portions between the electrode portions in the surface of the intermediate portion.

Electronic component

A multilayer LC filter array includes an element body of a rectangular parallelepiped shape, a first filter including a first inductor and a first capacitor, a second filter including a second inductor and a second capacitor, a first input terminal electrode and a first output terminal electrode that are connected to the first inductor, a second input terminal electrode and a second output terminal electrode that are connected to the second inductor, and a ground terminal electrode that is connected to the first capacitor and the second capacitor. The element body includes a principal surface. The ground terminal electrode is disposed at a center of the principal surface. The first input terminal electrode, the first output terminal electrode, the second input terminal electrode, and the second output terminal electrode are disposed at respective different corner portions of the element body when viewed from a direction orthogonal to the principal surface.

Lamination type LC filter array

The object of the invention is to provide a method of forming an external electrode of an electronic component whereby the external electrode can be formed in a stable fashion. In order to achieve this object, a method of forming an external electrode according to the present invention includes: a step of forming an electrode portionon a side faceof a chipconstituting an electronic component by applying a conductive pastefrom a direction facing this side face; a step of forming an electrode portionon a side faceof the chipfacing the side faceby applying the conductive pastefrom a direction facing this side face; a step of forming an electrode portionso as to connect the electrode portionand electrode portionon the bottom face of the chiprespectively adjacent to the side faceand the side face; and a step of forming an external electrodecomprising the electrode portion, electrode portionand electrode portionby drying this chip

Method of forming external electrode

A testing apparatus using a scanning electron microscope for enabling tests and measurements on any part of a test subject in a nondestructive way without being limited by a size of the test subject, which is, a testing apparatususing a scanning electron microscope for performing tests and measurements on any part of a test subject in a nondestructive way by using a scanning electron microscope, comprising a local vacuum formation portionfor forming a local vacuum region by blocking around a part to be tested of the test subject from the outside air, wherein the local vacuum formation portion comprises an exhaust portion for exhausting to form a partial vacuum region, a float meansfor floating the whole local vacuum formation portion above the test subject by emitting a compressed gas to an outer circumference portion of the local vacuum formation portion and a length measuring meansfor measuring a distance between the test subject and the local vacuum formation portion for controlling floating of the local vacuum formation portion by the float means.

Testing apparatus using scanning electron microscope

Growing community of inventors

Tokyo, Japan

Seiichi Nakagawa