# US 2019/0244744 A1 · Common-mode choke coil > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0244744 A1 - Document ID: US20190244744A1 - Status: Published application - Kind: A1 - Application number: 16/264,368 - Filed: 2019-01-31 - Published: 2019-08-08 - Earliest claimed: 2018-02-05 - Assignees: Murata Manufacturing Co., Ltd. - Applicants: Murata Manufacturing Co., Ltd. - Inventors: Kazuhiko TAKENAKA; Shigeto YAMAMOTO; Ryota HASHIMOTO; Akio IGARASHI; Yuki KANBE - Web page: https://patentgrep.com/patent/US20190244744A1 ## CPC - H01F 17/045: {with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core} - H01F 27/2823: {Wires (H01F27/2866 takes precedence)} - H01F 17/04: with magnetic core - H01F 27/29: Terminals; Tapping arrangements {for signal inductances} - H01F 38/48: {Common mode inductor for reducing or eliminating common mode noise on parallel lines} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract A coil component includes a drum core that includes a winding core portion and a pair of flange portions formed at the ends of the winding core portion, electrodes that are included in the pair of flange portions, and first and second wires that are wound around the winding core portion and that include extended portions electrically connected to the electrodes. The flange portions are continuous with the winding core portion and have slopes that guide the extended portions to the electrodes. ## Claims ### Claim 1 A common-mode choke coil comprising: a core that includes a winding core portion and a pair of flange portions formed at ends of the winding core portion; electrodes that are included in the pair of flange portions; and first and second wires that are wound around the winding core portion and that include extended portions electrically connected to the electrodes, wherein the flange portions are continuous with the winding core portion and have slopes each of which guides a specific one of the extended portions to a specific one of the electrodes. ### Claim 2 (depends on 1) The common-mode choke coil according to claim 1, wherein the pair of flange portions each have one of the slopes. ### Claim 3 (depends on 1) The common-mode choke coil according to claim 1, wherein facing surfaces of the pair of flange portions that face each other have the slopes, and when viewed in a direction in which the pair of flange portions are arranged, the first and second wires are hidden by end surfaces of the pair of flange portions that are opposite to the facing surfaces of the pair of flange portions. ### Claim 4 (depends on 1) The common-mode choke coil according to claim 1, wherein the slopes are hidden when viewed in a direction that is perpendicular to the direction in which the pair of flange portions are arranged and that is parallel to a mounting surface. ### Claim 5 (depends on 1) The common-mode choke coil according to claim 1, wherein the extended portions are shaped so as to follow shapes of the slopes. ### Claim 6 (depends on 1) The common-mode choke coil according to claim 1, wherein the slopes each have a groove in which one of the extended portions is fitted. ### Claim 7 (depends on 1) The common-mode choke coil according to claim 1, wherein an inclination angle of each of the slopes is within a range of about 5 degrees to about 20 degrees. ### Claim 8 (depends on 2) The common-mode choke coil according to claim 2, wherein facing surfaces of the pair of flange portions that face each other have the slopes, and when viewed in a direction in which the pair of flange portions are arranged, the first and second wires are hidden by end surfaces of the pair of flange portions that are opposite to the facing surfaces of the pair of flange portions. ### Claim 9 (depends on 2) The common-mode choke coil according to claim 2, wherein the slopes are hidden when viewed in a direction that is perpendicular to the direction in which the pair of flange portions are arranged and that is parallel to a mounting surface. ### Claim 10 (depends on 3) The common-mode choke coil according to claim 3, wherein the slopes are hidden when viewed in a direction that is perpendicular to the direction in which the pair of flange portions are arranged and that is parallel to a mounting surface. ### Claim 11 (depends on 2) The common-mode choke coil according to claim 2, wherein the extended portions are shaped so as to follow shapes of the slopes. ### Claim 12 (depends on 3) The common-mode choke coil according to claim 3, wherein the extended portions are shaped so as to follow shapes of the slopes. ### Claim 13 (depends on 4) The common-mode choke coil according to claim 4, wherein the extended portions are shaped so as to follow shapes of the slopes. ### Claim 14 (depends on 2) The common-mode choke coil according to claim 2, wherein the slopes each have a groove in which one of the extended portions is fitted. ### Claim 15 (depends on 3) The common-mode choke coil according to claim 3, wherein the slopes each have a groove in which one of the extended portions is fitted. ### Claim 16 (depends on 4) The common-mode choke coil according to claim 4, wherein the slopes each have a groove in which one of the extended portions is fitted. ### Claim 17 (depends on 5) The common-mode choke coil according to claim 5, wherein the slopes each have a groove in which one of the extended portions is fitted. ### Claim 18 (depends on 2) The common-mode choke coil according to claim 2, wherein an inclination angle of each of the slopes is within a range of about 5 degrees to about 20 degrees. ### Claim 19 (depends on 3) The common-mode choke coil according to claim 3, wherein an inclination angle of each of the slopes is within a range of about 5 degrees to about 20 degrees. ### Claim 20 A common-mode choke coil comprising: a core that includes a winding core portion and a pair of flange portions formed at ends of the winding core portion; electrodes that are included in the pair of flange portions; and first and second wires that are wound around the winding core portion and that include extended portions electrically connected to the electrodes, wherein the flange portions are continuous with the winding core portion and have a slope which guides a specific one of the extended portions to a specific one of the electrodes.