# US 2023/0274875 A1 · Coil component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0274875 A1 - Document ID: US20230274875A1 - Status: Published application - Kind: A1 - Application number: 18/172,901 - Filed: 2023-02-22 - Published: 2023-08-31 - Earliest claimed: 2022-02-28 - Assignees: Murata Manufacturing Co., Ltd. - Applicants: Murata Manufacturing Co., Ltd. - Inventors: Katsuyuki TAKAHASHI - Web page: https://patentgrep.com/patent/US20230274875A1 ## CPC - H01F 17/045: {with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core} - H01F 27/292: {Surface mounted devices} - H01F 27/24: Magnetic cores - H01F 27/255: made from particles (H01F27/26 takes precedence) - H01F 27/2828: {Construction of conductive connections, of leads} - H01F 27/29: Terminals; Tapping arrangements {for signal inductances} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract A coil component includes a core. The core includes a winding core portion extending in an axial direction, and first and second flange portions respectively at end portions of the winding core portion opposite to each other in the axial direction. Each of the first and second flange portions includes raised portion raised at a central portion in a direction orthogonal to the axial direction and shoulder portions lower than the raised portion on both sides of the raised portion. A recess is on an inner end surface on which the end portion of the winding core portion in the axial direction in each of the first and second flange portion is positioned, and at least an end portion of the winding core portion in the axial direction is in the recess, is on the raised portion side, and bites into the inner end surface. ## Claims ### Claim 1 A coil component comprising: a core that has a winding core portion extending in an axial direction and a first flange portion and a second flange portion respectively at first and second end portions of the winding core portion opposite to each other in the axial direction; a first terminal electrode that is at the first flange portion; a second terminal electrode that is at the second flange portion; and at least one wire that is connected to the first terminal electrode and the second terminal electrode and is wound around the winding core portion, wherein each of the first flange portion and the second flange portion includes a raised portion raised at a central portion in a direction orthogonal to the axial direction and shoulder portions lower than the raised portion on both sides of the raised portion in the direction orthogonal to the axial direction on any surface around each of the first flange portion and the second flange portion, an inner end surface of each of the first flange portion and the second flange portion, on which a respective one of the first and second end portions of the winding core portion in the axial direction is located, includes a recess, and a portion of the first end portion of the winding core portion is in the recess of the first flange portion and extends into the inner end surface of the first flange portion, and a portion of the second end portion of the winding core portion is in the recess of the second flange portion and extends into the inner end surface of the second flange portion. ### Claim 2 (depends on 1) The coil component according to claim 1, wherein each of the first flange portion and the second flange portion includes a mounting surface facing a mounting board side at a time of mounting, a top surface facing opposite to the mounting surface, an outer end surface facing opposite to the inner end surface, the inner and outer end surfaces connecting the mounting surface and the top surface, and a first side surface and a second side surface that connect the inner end surface and the outer end surface and face in opposite directions to each other, and when a direction in which the first side surface and the second side surface face is a width direction, the raised portion is in a central portion in the width direction on the mounting surface of each of the first flange portion and the second flange portion, and the shoulder portions are on both sides of the raised portion in the width direction. ### Claim 3 (depends on 2) The coil component according to claim 2, wherein at each of the first flange portion and the second flange portion, first and second rounded surfaces are at intersection portions of the winding core portion and the inner end surface, and a radius of curvature defining the first rounded surface at the mounting surface side is larger than a radius of curvature defining the second rounded surface at the top surface side. ### Claim 4 (depends on 2) The coil component according to claim 2, wherein at the first flange portion, a gap is between the inner end surface and a first lead-out portion of the wire, the first lead-out portion of the wire being drawn from the winding core portion and reaching the first terminal electrode, and at the second flange portion, a gap is between the inner end surface and a second lead-out portion of the wire, the second lead-out portion of the wire being drawn from the winding core portion and reaching the second terminal electrode. ### Claim 5 (depends on 2) The coil component according to claim 2, wherein each of the first terminal electrode and the second terminal electrode includes a respective metal plate, each of the first terminal electrode and the second terminal electrode includes portions extending along the raised portion and the shoulder portions on the mounting surface of each of the first flange portion and the second flange portion, and in each of the first terminal electrode and the second terminal electrode, the portion extending along the raised portion defines a connection portion with the mounting board, and the portion extending along the shoulder portions defines a connection portion with the wire. ### Claim 6 (depends on 5) The coil component according to claim 5, wherein rounded surfaces are at both end portions of a top face of the raised portion in the width direction. ### Claim 7 (depends on 5) The coil component according to claim 5, wherein rounded surfaces are at portions where the raised portion intersects the shoulder portions. ### Claim 8 (depends on 5) The coil component according to claim 5, wherein both end faces of the raised portion in the width direction includes a gradient. ### Claim 9 (depends on 5) The coil component according to claim 5, wherein a surface of the raised portion on a side of the inner end surface includes a gradient. ### Claim 10 (depends on 3) The coil component according to claim 3, wherein at the first flange portion, a gap is between the inner end surface and a first lead-out portion of the wire, the first lead-out portion of the wire being drawn from the winding core portion and reaching the first terminal electrode, and at the second flange portion, a gap is between the inner end surface and a second lead-out portion of the wire, the second lead-out portion of the wire being drawn from the winding core portion and reaching the second terminal electrode. ### Claim 11 (depends on 3) The coil component according to claim 3, wherein each of the first terminal electrode and the second terminal electrode includes a respective metal plate, each of the first terminal electrode and the second terminal electrode includes portions extending along the raised portion and the shoulder portions on the mounting surface of each of the first flange portion and the second flange portion, and in each of the first terminal electrode and the second terminal electrode, the portion extending along the raised portion defines a connection portion with the mounting board, and the portion extending along the shoulder portions defines a connection portion with the wire. ### Claim 12 (depends on 4) The coil component according to claim 4, wherein each of the first terminal electrode and the second terminal electrode includes a respective metal plate, each of the first terminal electrode and the second terminal electrode includes portions extending along the raised portion and the shoulder portions on the mounting surface of each of the first flange portion and the second flange portion, and in each of the first terminal electrode and the second terminal electrode, the portion extending along the raised portion defines a connection portion with the mounting board, and the portion extending along the shoulder portions defines a connection portion with the wire. ### Claim 13 (depends on 10) The coil component according to claim 10, wherein each of the first terminal electrode and the second terminal electrode includes a respective metal plate, each of the first terminal electrode and the second terminal electrode includes portions extending along the raised portion and the shoulder portions on the mounting surface of each of the first flange portion and the second flange portion, and in each of the first terminal electrode and the second terminal electrode, the portion extending along the raised portion defines a connection portion with the mounting board, and the portion extending along the shoulder portions defines a connection portion with the wire. ### Claim 14 (depends on 6) The coil component according to claim 6, wherein rounded surfaces are at portions where the raised portion intersects the shoulder portions. ### Claim 15 (depends on 11) The coil component according to claim 11, wherein rounded surfaces are at portions where the raised portion intersects the shoulder portions. ### Claim 16 (depends on 6) The coil component according to claim 6, wherein both end faces of the raised portion in the width direction includes a gradient. ### Claim 17 (depends on 7) The coil component according to claim 7, wherein both end faces of the raised portion in the width direction includes a gradient. ### Claim 18 (depends on 6) The coil component according to claim 6, wherein a surface of the raised portion on a side of the inner end surface includes a gradient. ### Claim 19 (depends on 7) The coil component according to claim 7, wherein a surface of the raised portion on a side of the inner end surface includes a gradient. ### Claim 20 (depends on 8) The coil component according to claim 8, wherein a surface of the raised portion on a side of the inner end surface includes a gradient.