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公开(公告)号：US20250014828A1
公开(公告)日：2025-01-09
申请号：US18755757
申请日：2024-06-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hironori TSUTSUMI , Mitsuru IKEDA , Akihiro YOSHIDA , Takayuki SHIMAKAWA
Abstract: An external electrode includes a base electrode layer, a Ni plating layer, and a Sn plating layer. The base electrode layer is provided on an element body portion. The Ni plating layer is provided above the base electrode layer. The Sn plating layer is provided on the Ni plating layer. The base electrode layer includes Ni as a primary component and a dielectric material.
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公开(公告)号：US20250014821A1
公开(公告)日：2025-01-09
申请号：US18755754
申请日：2024-06-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hironori TSUTSUMI , Mitsuru IKEDA , Akihiro YOSHIDA , Takayuki SHIMAKAWA
Abstract: Dielectric layers include outer dielectric layers and inner dielectric layers. The outer dielectric layers are located between a first principal surface and an internal electrode layer located closest to the first principal surface in a thickness direction and between a second principal surface and an internal electrode layer located closest to the second principal surface in the thickness direction. The inner dielectric layers are located between internal electrode layers adjacent to each other in the thickness direction. In an element body portion, side margin portions, which are located in a width direction between a first side surface and a plurality of internal electrode layers and between a second side surface and a plurality of internal electrode layers, have a higher Mn content than the inner dielectric layers.
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公开(公告)号：US20250014820A1
公开(公告)日：2025-01-09
申请号：US18746113
申请日：2024-06-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hironori TSUTSUMI , Mitsuru IKEDA , Akihiro YOSHIDA , Takayuki SHIMAKAWA
Abstract: A multilayer ceramic capacitor includes an element body portion including dielectric layers and internal electrode layers, and external electrodes. In a cross section of the element body portion extending through a central portion in a length direction, a deviation amount in a width direction between internal electrode layers adjacent to each other in a thickness direction is smaller than about 3 μm, each of the internal electrode layers includes an opposing portion opposed to the internal electrode layer, and a lead-out portion, a width of the opposing portion is greater than a width of the lead-out portion, a region of the element body portion where the lead-out portions overlap in the thickness direction includes a thick portion thicker than the central portion in the length direction, and end portions of the lead-out portions in the thickness direction deviate by about 3 μm or more in the width direction.
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公开(公告)号：US20230215656A1
公开(公告)日：2023-07-06
申请号：US18119619
申请日：2023-03-09
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yasuhiro NISHISAKA , Mitsuru IKEDA
CPC classification number: H01G4/306 , H01G4/008 , H01G4/1272 , H01G4/2325
Abstract: An electronic component includes a multilayer body including a multilayer main body including end surfaces at which internal nickel electrode layers are exposed, side gap portions, external nickel layers on the end surfaces of the multilayer body, and external copper electrode layers covering the end surfaces on which the external nickel layers are provided. A nickel-based oxide and/or a silicon-based oxide are provided between the external nickel layer and the external copper electrode layer. A nickel layer and a tin layer are provided outside the external copper electrode layer. In a cross section passing through a middle of the electronic component in the width direction and extending in the length direction and the lamination direction, a relationship of about 0.2≤Tea/Tem≤about 1.1 is satisfied.
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公开(公告)号：US20210335541A1
公开(公告)日：2021-10-28
申请号：US17232365
申请日：2021-04-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Mitsuru IKEDA
Abstract: A multilayer ceramic capacitor includes a multilayer body and two external electrodes. The multilayer body includes a multilayer main body including an inner layer portion including dielectric layers and internal electrode layers alternately stacked, and outer layer portions on opposite sides of the inner layer portion in a stacking direction, two side gap portions on opposite sides in a width direction, main surfaces on opposite sides in the stacking direction, side surfaces on opposite sides in the width direction, and end surfaces respectively provided on opposite sides in a length direction. The two external electrodes are provided at the end surfaces, each including a foundation electrode layer in contact with the multilayer body, and a conductive resin layer on the foundation electrode layer. An end region of the internal electrode layers in contact with the foundation electrode layer is thicker than other regions of the internal electrode layers.
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Patent Agency Ranking
公开(公告)号：US20160141105A1
公开(公告)日：2016-05-19
申请号：US14661026
申请日：2015-03-18
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hirobumi ADACHI , Mitsuru IKEDA , Hitoaki KIMURA
CPC classification number: H01G4/232 , H01G4/0085 , H01G4/1227
Abstract: A three-terminal capacitor includes a capacitor element including first through sixth surfaces, first-side and second-side outer electrodes, a center outer electrode between the first-side and second-side outer electrodes, and conductor layers within the capacitor element. A height H2 is greater than a height H3, where the height H2 represents a higher one of a height at a center of a portion of the first-side outer electrode on the fifth surface and a height at a center of a portion of the first-side outer electrode on the sixth surface, and the height H3 represents a height at a center of a portion of the first-side outer electrode on the third surface, wherein the height H2 and the height H3 extend in the thickness direction.
Abstract translation: 三端电容器包括电容器元件，包括第一至第六表面，第一侧和第二侧外电极，第一侧和第二侧外电极之间的中心外电极，以及电容器元件内的导体层。 高度H2大于高度H3，其中高度H2表示在第五表面上的第一侧外部电极的一部分的中心处的高度中的高度，以及第一表面的一部分的中心处的高度 并且高度H3表示在第三表面上的第一侧外部电极的一部分的中心处的高度，其中高度H2和高度H3在厚度方向上延伸。
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公开(公告)号：US20250014831A1
公开(公告)日：2025-01-09
申请号：US18754245
申请日：2024-06-26
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hironori TSUTSUMI , Mitsuru IKEDA , Akihiro YOSHIDA , Takayuki SHIMAKAWA
Abstract: A multilayer ceramic capacitor includes an element body portion including dielectric layers and internal electrode layers including Ni laminated in a thickness direction. In the internal electrode layers, a width of an opposing portion is larger than a width of a lead-out portion. The element body portion includes first, second, and third regions in order from an inside to an outside in the width direction in each of a region from an end portion on one side of the lead-out portion in the width direction to the first side surface and a region from an end portion on another side of the lead-out portion to the second side surface. When grain sizes of dielectrics included in the first, second, and third regions are respectively defined as gr1, gr2, and gr3, a relationship of gr1
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公开(公告)号：US20240181507A1
公开(公告)日：2024-06-06
申请号：US18439797
申请日：2024-02-13
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiyoyuki NAKAGAWA , Mitsuru IKEDA
CPC classification number: B08B9/46 , H05K5/0217 , B08B2209/08
Abstract: A case includes a case body including an accommodation space to accommodate electronic components and a discharge port to accommodate in and discharge the electronic components from the accommodation space, and a shutter slidable in the case body to open and close the discharge port. The case body includes an inner rear wall portion defining the accommodation space. The inner rear wall portion includes a thin portion defining and functioning as a through-hole formation portion at which a through hole may be provided to allow communication between outside of the case body and the accommodation space.
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公开(公告)号：US20240013980A1
公开(公告)日：2024-01-11
申请号：US18218714
申请日：2023-07-06
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Hironori TSUTSUMI , Shoji FUKUI , Junichi KAWASAKI , Mitsuru IKEDA
CPC classification number: H01G4/30 , H01G4/012 , H01G4/1227 , H01G4/008
Abstract: A multilayer ceramic capacitor includes a multilayer body including an inner layer portion including dielectric layers and internal electrode layers, and external electrodes on end surfaces of the multilayer body. The internal electrode layers each include a counter electrode portion and an extension electrode portion extending from the counter electrode portion toward the end surface and, when viewing the multilayer body in a cross section parallel to the width direction and the lamination direction, and when a maximum length in the width direction of a range in which one end in the width direction of the counter electrode portions is provided is defined as R1, and a maximum length in the width direction of a range in which one end in the width direction of the extension electrode portions is provided is defined as R2, a relationship between R1 and R2 is R2>R1.
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公开(公告)号：US20220384102A1
公开(公告)日：2022-12-01
申请号：US17752908
申请日：2022-05-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Mitsuru IKEDA , Yasuhiro NISHISAKA
Abstract: An electronic component includes an electronic element and an interposer board. The electronic element includes a multilayer body and external electrodes at multilayer body end surfaces of the multilayer body and connected to internal electrode layers. The interposer board includes board end surfaces, board side surfaces orthogonal to the board end surfaces, and board main surfaces orthogonal to the board end surface and the board side surface. One of the board main surfaces is located in a vicinity of the electronic element and joined with one of the pair of multilayer body main surfaces in the vicinity of the board. The interposer board is an alumina board. The board end surfaces each include a metal layer including a Zn-containing layer and a Cu layer on an outer periphery of the Zn-containing layer.
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