Murata Manufacturing Co., Ltd.

Kohei Shimada

Hiroyuki Wada

Sui Uno

Tomotaka Hirata

Hitoshi Nishimura

Hiroki Awata

Tomomi Koga

Kenji Takagi

Yuta Saito

Masahiro Wakashima

Naobumi Ikegami

Katsuya Ishida

Shinji Otani

Kazutaka Nakamura

Takeshi Furukawa

Akio Masunari

Keisuke Araki

Kazuo Muto

Shunsuke Abe

Akitomo Takahashi

Hiroyuki Yoshioka

Masato Ishibashi

Tomoo Yuguchi

A capacitor disposed inside a multilayer substrate that includes a conductive pattern on a surface thereof and an anode portion having a first conductive metal member and a porous portion disposed on a surface of the first conductive metal member, a cathode portion, and a dielectric layer disposed between the anode portion and the cathode portion. Moreover, the anode portion is led out to a surface side of the multilayer substrate by a connection electrode including an alloy layer containing a metal forming the first conductive metal member and a conductive layer disposed on the alloy layer, and in which the connection electrode is connected to the conductive pattern formed on the surface of the multilayer substrate.

Capacitor, connection structure, and method for manufacturing capacitor

A multilayer ceramic capacitor includes a laminate with a rectangular or substantially rectangular parallelepiped shape and including dielectric layers, first internal electrode layers, and second internal electrode layers that are laminated; a first external electrode connected with the first internal electrode layers; and a second external electrode connected with the second internal electrode layers. Each of the first internal electrode layers or the second internal electrode layers has a coverage in a central portion in a W direction that is lower than a coverage within about 30.000 &#x3bc;m from an end portion in the W direction, and has a shifting amount in the W direction of about 0.000 &#x3bc;m or more and about 10.000 &#x3bc;m or less.

Multilayer ceramic capacitor

A perovskite ceramic composition that contains Sn, Ba, and Ti, and where the Sn content is within a range of about 0.001 parts by mol&#x2264;Sn&#x2264;about 0.999 parts by mole with respect to 100 parts by mole of the Ti. The perovskite ceramic composition can be used in a composition that further includes a rare earth element R, Mn, and Si, and optionally Mg, where proportions of the R, the Mn, the Si, and the optional Mg, satisfy R: 0&#x3c;R&#x2264;about 10 parts by mole, Mn: 0&#x3c;Mn&#x2264;about 5 parts by mole, Si: 0&#x3c;Si&#x2264;about 5 parts by mole Mg: 0&#x3c;Mg&#x2264;about 5 parts by mole with respect to 100 parts by mole of Ti.

Perovskite ceramic composition, combined composition containing perovskite ceramic composition, method for manufacturing perovskite ceramic composition, and method for manufacturing multilayer ceramic capacitor

An electronic component is able to be mounted on a mounting substrate on which a first electronic component and a second electronic component are able to be mounted. When dimensions of the first electronic component and the second electronic component in a width direction is designated as Wand W, respectively, and dimensions of the first electronic component and the second electronic component in a length direction are designated as Land L, respectively, dimensions of the electronic component in the width direction and the length direction are any one of combinations of Wand L, and of Wand L. The electronic component includes a third laminate and a pair of third external electrodes. Each of the pair of third external electrodes includes a fired layer, and a resin layer provided on an external surface of the fired layer.

Electronic component

An electronic component is able to be mounted on a mounting substrate including a pair of first edge portions that faces each other, and a pair of second edge portions that is perpendicular or substantially perpendicular to the pair of first edge portions and faces each other. The mounting substrate has a structure that allows at least any one of the electronic component, a first electronic component, and a second electronic component, to be mounted thereon. When a dimension of the first electronic component in a length direction is designated as L1, a dimension of the first electronic component in a width direction is designated as W1, a dimension of the second electronic component in the length direction is designated as L2, and a dimension of the second electronic component in the width direction is designated as W2, a dimension of the electronic component in the width direction is any one of W1 and W2. A dimension of the electronic component in the length direction is L2 when the dimension of the electronic component in the width direction is W1, and is L1 when the dimension of the electronic component in the width direction is W2.

A multilayer ceramic capacitor that includes a laminated body having a plurality of ceramic layers including crystal grains that have a perovskite structure, and a plurality of internal electrode layers; and external electrodes on first and second end surfaces of the laminated body and electrically connected to respective sets of the plurality of internal electrodes. In the ceramic layers, when the content of Ti is 100 parts by mol, the ceramic layers contain Ca at 0.10 to 15.00 parts by mol; Mg at 0.0010 to 0.0097 parts by mol; R at 0.50 to 4.00 parts by mol; M at 0.10 to 2.00 parts by mol; and Si at 0.50 to 2.00 parts by mol, and core parts of the crystal grains contain Ca.

Multilayer ceramic capacitor and manufacturing method therefor

A multilayer ceramic capacitor includes a laminated body including laminated ceramic layers, and first and second internal electrodes extending along interfaces between the ceramic layers. External electrodes are located on outer surfaces of the laminated body. Phosphor is disposed on portions of outer surfaces of the laminated body containing no external electrodes.

Multilayer ceramic electronic component

A multilayer ceramic capacitor includes a laminated body including an inner layer portion including ceramic dielectric layers and internal electrodes, and outer layer portions including ceramic dielectric layers. External electrodes connected to the internal electrodes are provided on both ends of the laminated body. The main constituent of the inner layer portion is a perovskite-type compound represented by ABO. The outer layer portions include first outer layers and second outer layers respectively containing oxides that differ from each other in main constituents, and boundary reaction layers are provided between the first outer layers and the second outer layers. First ceramic dielectric layers outside the boundary reaction layers differ in color from second ceramic dielectric layers inside the boundary reaction layers.

A mounting substrate on which at least any one of three kinds of electronic components including a first electronic component, a second electronic component, and a third electronic component are able to be mounted includes a pair of first edge portions and a pair of second edge portions. When a dimension of the first electronic component in its length direction is designated as La dimension of the first electronic component in its width direction is designated as Wa dimension of the second electronic component in its length direction is designated as Land a dimension of the second electronic component in its width direction is designated as Wa dimension of the third electronic component in its width direction is any one of Wand Wand a dimension of the third electronic component in its length direction is Lwhen the dimension of the third electronic component in its width direction is Wand is Lwhen the dimension of the third electronic component in its width direction is WAt least one or more of the third electronic components are mounted on the mounting substrate.

Mounting substrate

A multilayer ceramic capacitor includes a multilayer body including dielectric ceramic layers and inner electrode layers containing Ni and electrically connected to outer electrodes. The dielectric ceramic layers contain a Ba- and Ti-containing perovskite compound, Ca, Mg, R (at least one rare earth metal selected from La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y), M (at least one selected from Zr, Mn, Co, Fe, Cr, Cu, Al, V, Mo, and W), and Si. The number of parts by mole of each element relative to Ti as 100 parts is as follows:

Multilayer ceramic capacitor and method for producing multilayer ceramic capacitor

Provided is a laminated ceramic capacitor which can suppress degradation of the insulation resistance due to the addition of vanadium. Second insulating layers are stacked on both sides in the stacking direction of a first insulating layer group, which has first insulating layers stacked over one another, and internal electrodes are placed on principal surfaces of the first insulating layers. At least one internal electrode is placed between the first and second insulating layers. Both contain, as their main constituent, a perovskite-type compound represented by the formula 'ABO' wherein 'A' denotes at least one of Ba, Sr, and Ca, &#x201c;B&#x201d; denotes at least one of Ti, Zr, and Hf. V is added to only the first insulating layers.

Laminated ceramic capacitor

A laminated ceramic capacitor having a laminated body composed of a plurality of ceramic layers for inner layers; a plurality of internal electrodes at the interfaces between the plurality of ceramic layers for inner layers; and a plurality of ceramic layers for outer layers, provided on the top and bottom so as to sandwich the plurality of ceramic layers for inner layers. The ceramic layers for inner layers are composed of a material containing a multiple oxide including an alkaline-earth metal. The ceramic layers for outer layers respectively have TiOceramic layers containing TiOas their main constituent for certain layers including the outermost layers, and multiple oxide ceramic layers containing a multiple oxide including an alkaline-earth metal for the other layers.

A multilayer ceramic capacitor includes a ceramic main body including an inner layer portion including third ceramic layers and a plurality of inner electrodes arranged at interfaces between the third ceramic layers, and first and second outer layer portions respectively including first and second ceramic layers, the first and second ceramic layers being arranged vertically so as to sandwich the inner layer portion. The third ceramic layers and the first and second outer layer portions contain a perovskite-type compound represented by ABOwhere A contains one or more of Ba, Sr, and Ca, B contains one or more of Ti, Zr, and Hf, and O represents oxygen) as a main component. Where a rare-earth element concentration (C) in the third ceramic layers is compared to a rare-earth element concentration (C) in outermost layer portions including at least outermost surfaces of the first and second outer layer portions, C&#x3e;C(inclusive of C=0).

Growing community of inventors

Nagaokakyo, Japan

Kohei Shimada