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公开(公告)号：US20220310313A1
公开(公告)日：2022-09-29
申请号：US17703597
申请日：2022-03-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takumi ARAI , Motoki TOYAMA
IPC: H01F27/29 , H01F27/255 , H01F27/26
Abstract: An inductor is configured to keep an inductance value within an allowable range of a specification. The inductor includes a conductor embedded in a core containing magnetic powder. The core includes a mounting surface facing a mounting substrate side at the time of mounting, an upper surface facing the mounting surface, a pair of end surfaces orthogonal to the mounting surface, and a pair of side surfaces orthogonal to the mounting surface and the pair of end surfaces. The conductor includes a conductive wire portion extending inside the core over the pair of end surfaces, and an electrode portion led out from each of the end surfaces and extending along the end surface and the mounting surface. The conductive wire portion is curved toward the mounting surface side in side view when the core is viewed from the side surface.
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公开(公告)号：US20220310308A1
公开(公告)日：2022-09-29
申请号：US17656447
申请日：2022-03-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takumi ARAI , Motoki TOYAMA , Daigo MIZUMURA
Abstract: An inductor capable of suppressing deformation of a conductive wire portion in a core. The inductor includes a conductor is embedded in a core containing magnetic powder. The core includes a mounting surface facing a mounting substrate side at the time of mounting, and a pair of end surfaces orthogonal to the mounting surface. The inductor includes a conductive wire portion extending inside the core over the pair of end surfaces and an electrode portion led out from each of the pair of end surfaces and extending along the end surface and the mounting surface. The conductive wire portion includes a reinforcing portion.
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公开(公告)号：US20190272947A1
公开(公告)日：2019-09-05
申请号：US16289234
申请日：2019-02-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Ryuta UEMATSU , Takumi ARAI , Koichi SAITO , Kazuhide KUDO
Abstract: A surface mount inductor includes a molded body made of a composite material containing a magnetic powder, and a metal plate including a first metal plate portion that is buried in the molded body and second metal plate portions that extend from the first metal plate portion to outside the molded body. The second metal plate portions each include a first bent portion that extends from a side surface of the molded body and is bent in a direction that intersects the mounting surface and a second bent portion that is bent from the direction that intersects the mounting surface toward a side surface the molded body. The second metal plate portions extend along the molded body onto the mounting surface and form an external terminal. An internal angle of each first bent portion is formed so as to be an obtuse angle.
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公开(公告)号：US20220310309A1
公开(公告)日：2022-09-29
申请号：US17656449
申请日：2022-03-25
Applicant: MURATA MANUFACTURING CO., LTD.
Inventor： Takumi ARAI , Motoki TOYAMA , Hiroyasu MORI
Abstract: An inductor includes a core containing magnetic powder and a conductor embedded in the core. The core includes a mounting surface facing a mounting substrate side at the time of mounting, a pair of end surfaces orthogonal to the mounting surface, a pair of side surfaces orthogonal to the mounting surface and the pair of end surfaces. The conductor has a plate shape and includes a conductive wire portion extending inside the core over the end surfaces and a pair of electrode portions provided at both end portions of the conductive wire portion and extending from the end surface of the core to the mounting surface. The conductive wire portion includes a belt-shaped flat plate portion. One surface of the electrode portion facing the core is embedded in the core, and the other surface of the electrode portion facing the one surface is exposed from the core.
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公开(公告)号：US20190272946A1
公开(公告)日：2019-09-05
申请号：US16289219
申请日：2019-02-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takumi ARAI , Ryuta UEMATSU , Koichi SAITO , Kazuhide KUDO
Abstract: A surface-mount inductor includes a molded body and a metallic plate. The metallic plate has a first metallic plate portion embedded in the molded body such that an extension direction and a width direction thereof are parallel to the mounting surface; second metallic plate portions extending from both end portions, in the extension direction, of the first metallic plate portion to a bottom surface of the molded body in a direction to the mounting surface; and third metallic plate portions disposed to extend from the second metallic plate portions along the bottom surface of the molded body and be separated from side surfaces adjacent to the bottom surface of the molded body. Each of the third metallic plate portions has at least a surface exposed from the molded body. End portions of the metallic plate are embedded to be separated from the side surfaces of the molded body.
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Patent Agency Ranking
公开(公告)号：US20190272945A1
公开(公告)日：2019-09-05
申请号：US16289192
申请日：2019-02-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takumi ARAI , Ryuta UEMATSU , Koichi SAITO , Kazuhide KUDO
Abstract: A surface mount inductor includes a molded body made of a composite material containing magnetic powder, and a metal plate including a first metal plate portion embedded in the molded body and a second metal plate portion extending from the first metal plate portion to an outside of the molded body. The second metal plate portion is extended from a side surface or mounting surface side of the molded body, is arranged along the molded body with a bent portion, and forms an external terminal arranged at least on the mounting surface side of the molded body. The external terminal includes a plating layer on a surface on an opposite side from a surface facing the molded body, and does not include a plating layer on the surface facing the molded body.
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公开(公告)号：US20220310315A1
公开(公告)日：2022-09-29
申请号：US17703932
申请日：2022-03-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takumi ARAI , Motoki TOYAMA
IPC: H01F27/29 , H01F27/255 , H01F27/26
Abstract: An inductor including a conductor having a plate thickness is embedded in a core containing magnetic powder. The core includes a mounting surface facing a mounting substrate side at the time of mounting, an upper surface facing the mounting surface, and a pair of end surfaces orthogonal to the mounting surface. The conductor includes a conductive wire extending inside the core over the pair of end surfaces, and a pair of electrode terminals. Each electrode terminal includes an electrode portion at respective end portions of the conductive wire and exposed to the mounting surface, and first and second bent portions having a first bend and second bend, respectively, which are each 2.0 times to 3.0 times the plate thickness. When one of the first and second bends is 2.0 times or more the plate thickness, the other is less than 3.0 times the plate thickness.
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公开(公告)号：US20220310314A1
公开(公告)日：2022-09-29
申请号：US17703852
申请日：2022-03-24
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Takumi ARAI , Motoki TOYAMA
IPC: H01F27/29 , H01F27/255 , H01F27/26
Abstract: An inductor includes a core containing magnetic powder and a conductor embedded in the core. The core includes a mounting surface facing a mounting substrate side at the time of mounting, end surfaces orthogonal to the mounting surface, and side surfaces orthogonal to the mounting surface and the end surfaces. The conductor includes a conductive wire portion extending inside the core over the end surfaces and electrode portions at both end portions of the conductive wire portion and extending from the end surface of the core to the mounting surface. Each electrode portion is exposed to the side surfaces of the core, and in both end portions of the conductive wire portion, a shape of an edge portion corresponding to the side surface of the core is a cutout shape in which a location inside the core is cut out from a location connected to the electrode portion.
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公开(公告)号：US20210118602A1
公开(公告)日：2021-04-22
申请号：US17072556
申请日：2020-10-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Yuichi TSUCHIYA , Takumi ARAI , Motoki TOYAMA , Ryuta UEMATSU
IPC: H01F27/255 , H01F1/147 , H01F41/02 , H01F27/29 , H01F41/04
Abstract: An inductor includes an external terminal and an element body that includes a magnetic portion containing a magnetic powder and a coil embedded in the magnetic portion. The magnetic powder has a particle size D50 at 50% of the cumulative volume of 5 μm or less, a D90/D10 of 19 or lower, and a Vickers hardness of 1000 (kgf/mm2) or lower, the D90/D10 being the ratio of particle size D90 at 90% of the cumulative volume to particle size D10 at 10% of the cumulative volume in the cumulative particle size distribution by volume. In the magnetic portion, the packing density of the magnetic powder by volume is 60% or higher.
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公开(公告)号：US20200279688A1
公开(公告)日：2020-09-03
申请号：US16805539
申请日：2020-02-28
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Motoki TOYAMA , Takumi ARAI , Ryuta UEMATSU , Yuichi TSUCHIYA
Abstract: An inductor includes a main body having a bottom surface, a top surface positioned opposite to the bottom surface, four side surfaces connected to the bottom surface and the top surface, a metal body that includes a first metal portion buried in the main body and second metal portions extending outward from respective opposite longitudinal ends of the first metal portion. The second metal portions are exposed from respective opposite side surfaces of the main body. In the inductor, each second metal portion is formed into a tabular shape having a first surface with a plating layer and a second surface positioned opposite to the first surface. Each second metal portion is formed into an external terminal and includes a first bend and a second bend that are formed by bending the second metal portion.
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