公开(公告)号：US20170062136A1

公开(公告)日：2017-03-02

申请号：US15352670

申请日：2016-11-16

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kosuke ONISHI ,  Tomohiro SASAKI ,  Yasuhiro NISHISAKA ,  Akira ISHIZUKA ,  Akihiro YOSHIDA

IPC: H01G4/30 ,  H01L41/047 ,  H01G4/248 ,  H01G4/008 ,  H01G4/12 ,  H01F27/29 ,  H01L41/293

CPC classification number: H01G4/30 ,  H01C7/008 ,  H01F27/2804 ,  H01F27/29 ,  H01F2027/2809 ,  H01G4/005 ,  H01G4/008 ,  H01G4/12 ,  H01G4/248 ,  H01L41/0472 ,  H01L41/293

Abstract: External electrodes, electrically connected to exposed portions of internal electrodes, are arranged on end surfaces of a ceramic main body of a laminated ceramic capacitor. Alloy layers of a metal contained in internal electrodes, and a metal contained in external electrodes, are arranged at the boundaries between external electrodes, and the ceramic main body and internal electrodes. Plating layers are provided on surfaces of external electrodes. A ceramic electronic component having a reduced ESR is thus provided.

Abstract translation: 电连接到内部电极的露出部分的外部电极设置在层叠陶瓷电容器的陶瓷主体的端面上。 包含在内部电极中的金属和外部电极中包含的金属的合金层被布置在外部电极和陶瓷主体和内部电极之间的边界处。 电镀层设置在外部电极的表面上。 因此提供了具有减小的ESR的陶瓷电子部件。

公开(公告)号：US20250014830A1

公开(公告)日：2025-01-09

申请号：US18754231

申请日：2024-06-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hironori TSUTSUMI ,  Mitsuru IKEDA ,  Akihiro YOSHIDA ,  Takayuki SHIMAKAWA

IPC: H01G4/30 ,  H01G4/008 ,  H01G4/12

Abstract: A multilayer ceramic capacitor includes an element body portion including dielectric layers and internal electrode layers including Ni, and external electrodes. In each internal electrode layer, a width of an opposing portion is larger than a width of a lead-out portion. The element body portion includes side margin portions extending from both end portions of the opposing portion to first and second side surfaces, through a central portion in a length direction, and parallel or substantially parallel to a thickness direction and a width direction. A dielectric layer between adjacent internal electrode layers in the thickness direction includes grains including pores. Each of the side margin portions includes a dielectric including grains that do not include pores.

公开(公告)号：US20250014818A1

公开(公告)日：2025-01-09

申请号：US18754232

申请日：2024-06-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hironori TSUTSUMI ,  Mitsuru IKEDA ,  Akihiro YOSHIDA ,  Takayuki SHIMAKAWA

IPC: H01G4/008 ,  H01G4/12 ,  H01G4/232 ,  H01G4/248 ,  H01G4/30

Abstract: A multilayer ceramic capacitor includes an element body portion including internal electrode layers, and first and second external electrodes. In the internal electrode layers, a width of an opposing portion is larger than a width of a lead-out portion, each of the first and second external electrodes includes a Cu layer on the element body portion including first and second layer portions. The first layer portion has a higher Cu content than the second layer portion, the second layer portion has a higher glass content than the first layer portion. The Cu in the first layer portion is continuous to connect lead-out portions adjacent to each other. In a cross section of the second layer portion extending through a central portion in the width direction and parallel to the thickness and length directions, the glass occupies about 25% or more of an area of the second layer portion.

公开(公告)号：US20250014829A1

公开(公告)日：2025-01-09

申请号：US18754226

申请日：2024-06-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hironori TSUTSUMI ,  Mitsuru IKEDA ,  Akihiro YOSHIDA ,  Takayuki SHIMAKAWA

IPC: H01G4/30 ,  H01G4/008 ,  H01G4/12

Abstract: A multilayer ceramic capacitor includes an element body portion including dielectric layers and internal electrode layers laminated in a thickness direction, and external electrodes respectively on first and second end surfaces and electrically connected to the internal electrode layers. Each of the internal electrode layers includes an opposing portion opposed to another internal electrode layer, and a lead-out portion connected to the opposing portion and extending to the first or second end surface, a width of the opposing portion is larger than a width of the lead-out portion in the width direction, and a relationship of C1>C2 is satisfied when a continuity of an end portion of the opposing portion in the width direction is defined as C1 and a continuity of an end portion of the lead-out portion in the width direction is defined as C2.

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

IPC: H01G4/232 ,  H01G4/008 ,  H01G4/12 ,  H01G4/224 ,  H01G4/30

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.

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

IPC: H01G4/12 ,  H01G4/005 ,  H01G4/232 ,  H01G4/30

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.

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

IPC: H01G4/012 ,  H01G4/008 ,  H01G4/232 ,  H01G4/30

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.

公开(公告)号：US20160095223A1

公开(公告)日：2016-03-31

申请号：US14867282

申请日：2015-09-28

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Akihiro YOSHIDA

IPC: H05K1/18 ,  H01G4/224 ,  H05K1/11 ,  H01G4/12 ,  H05K1/02 ,  H01G4/30 ,  H01G4/012

CPC classification number: H01G4/12 ,  H01G4/012 ,  H01G4/2325 ,  H01G4/30 ,  H05K1/0271 ,  H05K1/181 ,  H05K2201/10015

Abstract: A multilayer ceramic capacitor includes an external electrode on an end surface of a ceramic body to be connected to internal electrodes including a base layer including a sintered metal containing Cu and glass and a Cu plated layer on the base layer. The external electrode includes a principal surface portion disposed on a principal surface of the ceramic body. The Cu metal of the Cu plated layer is present in the base layer to a position of about ⅓ or more of the thickness of the base layer from a surface layer of the external electrode. The metal thickness of the external electrode is about 8.7 μm or more and about 13.9 μm or less.

Abstract translation: 多层陶瓷电容器包括在陶瓷体的端面上的外部电极，该外部电极与内部电极连接，内部电极包括基底层，该基底层包含含有Cu和玻璃的烧结金属和在基底层上的Cu镀层。 外部电极包括设置在陶瓷体的主表面上的主表面部分。 Cu镀层的Cu金属在基底层中存在于外层电极表面层的基底层厚度的约1/3以上的位置。 外部电极的金属厚度为约8.7μm以上且约13.9μm以下。

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

IPC: H01G4/30 ,  H01G4/008 ,  H01G4/12

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

公开(公告)号：US20150016018A1

公开(公告)日：2015-01-15

申请号：US14324397

申请日：2014-07-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kosuke ONISHI ,  Tomohiro SASAKI ,  Yasuhiro NISHISAKA ,  Akira ISHIZUKA ,  Akihiro YOSHIDA

IPC: H01G4/005 ,  H01L41/047 ,  H01C7/00 ,  H01G4/30 ,  H01F27/29

CPC classification number: H01G4/30 ,  H01C7/008 ,  H01F27/2804 ,  H01F27/29 ,  H01F2027/2809 ,  H01G4/005 ,  H01G4/008 ,  H01G4/12 ,  H01G4/248 ,  H01L41/0472 ,  H01L41/293

Abstract: External electrodes, electrically connected to exposed portions of internal electrodes, are arranged on end surfaces of a ceramic main body of a laminated ceramic capacitor. Alloy layers of a metal contained in internal electrodes, and a metal contained in external electrodes, are arranged at the boundaries between external electrodes, and the ceramic main body and internal electrodes. Plating layers are provided on surfaces of external electrodes. A ceramic electronic component having a reduced ESR is thus provided.

Abstract translation: 电连接到内部电极的露出部分的外部电极设置在层叠陶瓷电容器的陶瓷主体的端面上。 包含在内部电极中的金属和外部电极中包含的金属的合金层被布置在外部电极和陶瓷主体和内部电极之间的边界处。 电镀层设置在外部电极的表面上。 因此提供了具有减小的ESR的陶瓷电子部件。