Murata Manufacturing Co., Ltd.

Takashi Tomohiro

Hiromichi Tokuda

Noriko Shimizu

Kenichi Araki

Keita Muneuchi

Eiji Iso

Isao Ida

Toshimi Kaneko

Kazumasa Fujimoto

Takahiro Azuma

Gota Shinohara

Hidetoshi Yamamoto

Yoshihiro Imanishi

Masaki Kitajima

Tomoki Nobuta

Hironori Suzuki

Yasuhiro Nakata

An electronic component includes an element body made of a composite material of a resin material and metal powder. A plurality of particles of the metal powder are exposed from the resin material and make contact with one another on the outer surface of the element.

Electronic component and method for manufacturing the same

A coil component includes a body that is made of a composite material containing a resin material and metal powder, a coil conductor which is provided in the body and an end portion of which is exposed on an end face of the body, and a metal film that is provided on an outer surface of the body and that is electrically connected to the coil conductor on the end face in the outer surface. The outer surface of the body has a contact area that is in contact with the metal film. Multiple particles of the metal powder escape from the resin material and are in contact with each other in the contact area of the body.

Coil component and method of manufacturing the coil component

An electronic component includes a component base body and first and second outer electrodes covering respective end faces of the component base body. The component base body includes an element main body and a magnetic body portion covering the element main body. The element main body includes a linear inner conductor, a dielectric layer covering the periphery of part of the inner conductor, and a conductor layer formed to cover the dielectric layer.

Electronic component

An electronic component includes a body made of a material containing particles of a metallic magnetic material, and an outer electrode disposed on a surface of the body. The surface of the body has a contact portion with which the outer electrode is in contact, and the surface of the body includes particles of the metallic magnetic material which are exposed from the surface of the body.

Electronic component and method of manufacturing the same

A laminate-type electronic component includes has a first coil and a second coil, and the number of turns of the first coil is smaller than that of the second coil due to a positional relationship between input-output electrodes. As a result, the thickness of an outer layer on the first coil side is increased, that is, the magnetic path cross-sectional area of the outer layer is increased. Thus, the inductance of the first coil is decreased. The thickness of the outer layer on the second coil side is decreased, that is, the magnetic path cross-sectional area of the outer layer on the second coil side is decreased. Thus, the inductance of the second coil is decreased.

Laminate-type ceramic electronic component

In a method of manufacturing a laminated ceramic electric component, a first transfer sheet in which a composite green sheet having a non-magnetic ceramic area and a magnetic ceramic area is supported by a supporting film, and a second transfer sheet in which a ceramic green sheet is supported by a supporting film are prepared. The method includes the first transfer step of sequentially transferring the ceramic green sheet onto a lamination stage, the second transfer step of transferring the composite green sheet, the third transfer step of transferring the ceramic green sheet of the second transfer sheet, and the step of obtaining a laminate.

Method of manufacturing laminated ceramic electronic component and laminated ceramic electronic component

In a method of manufacturing a laminated ceramic electronic component, a first transfer sheet in which a composite green sheet having a non-magnetic ceramic area and a magnetic ceramic area is supported by a supporting film, and a second transfer sheet in which a ceramic green sheet is supported by a supporting film are prepared. The method includes the first transfer step of sequentially transferring the ceramic green sheet onto a lamination stage, the second transfer step of transferring the composite green sheet, the third transfer step of transferring the ceramic green sheet of the second transfer sheet, and the step of obtaining a laminate.

A common-mode choke coil includes first to third spiral coils, in which the diameters of coil portions are substantially the same and the axes of the coil portions are aligned collinearly. Extended portions of the first and second coils have a flectional pattern and connect coil portions located at substantially the center in the longitudinal direction of sheets and input/output electrodes. The junctions of the extended portions and the coil portions have a folded configuration. Accordingly, the number of turns and the line length of the first coil are the same as those of the second coil.

Multilayered common-mode choke coil

In a method for manufacturing a laminated ceramic electronic component, a first transfer member and a second transfer member are prepared on a lamination stage to produce the laminated ceramic electronic component. The first transfer member includes a conductor-attached composite green sheet having a conductor on a portion of the surface thereof, including a non-magnetic ceramic region and a magnetic ceramic region, and a first carrier film that carries the conductor-attached composite green sheet. The second transfer member includes a ceramic green sheet and a carrier film that carries the ceramic green sheet. The laminated ceramic electronic component is thus produced through a first transfer step in which the ceramic green sheets are successively transferred, through a second transfer step in which the conductor-attached composite green sheet is transferred, and through a third transfer step in which the ceramic green sheet of the second transfer member is transferred. A desired conductor and a structure within a sintered ceramic body are produced with high accuracy, and the manufacturing process is greatly simplified, and costs of the laminated ceramic electronic component are greatly reduced.

Method of manufacturing laminated ceramic electronic component, and laminated ceramic electronic component

An LC filter is disclosed which exhibits excellent attenuation characteristics in a high-frequency range and substantially preserves its self-inductance and Q-factor. The LC filter is constructed of a laminated block formed by laminating insulating sheets each provided with a coil conductor. The coil conductors are connected in series to each other through via-holes to form a coil. Input/output external electrodes and ground external electrodes are disposed on the surfaces of the laminated block. The insulating sheets are laminated in a direction perpendicular to the input/output external electrodes and parallel to the mounting surface. The coil is axially placed perpendicular to the input/output external electrodes and parallel to the ground external electrodes and the mounting surface. A distributed capacitance is generated between the coil and each of the ground external electrodes to form a capacitor.

LC filter with a parallel ground electrode

An electronic device which has, on a rectangular insulating substrate, an input electrode and an output electrode, grounding electrodes and a conductor for electrically connecting the input electrode and the output electrode. The input electrode and the output electrode are disposed on both ends of the substrate. The grounding electrodes are disposed on side surfaces of the substrate in the center, and the conductor is disposed on an upper surface of the substrate. The conductor is a conductor with a high conductivity, a resistor or a coil. A capacity is generated between the conductor and the grounding electrode. If the conductor is a resistor, an RC circuit is formed.

Growing community of inventors

Omihachiman, Japan

Takashi Tomohiro