# US 12,191,061 B2 · Multilayer coil component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,191,061 B2 - Document ID: US12191061B2 - Status: Granted - Kind: B2 - Application number: 18/434,516 - Filed: 2024-02-06 - Published: 2024-05-30 - Granted: 2025-01-07 - Earliest claimed: 2019-05-24 - Assignees: Murata Manufacturing Co., Ltd. - Applicants: Murata Manufacturing Co., Ltd. - Inventors: Atsuo Hirukawa - Web page: https://patentgrep.com/patent/US12191061B2 ## CPC - H01F 17/0013: {with stacked layers} - H01F 27/292: {Surface mounted devices} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract A multilayer coil component includes a multilayer body that contain a coil. The coil includes coil conductors. A lamination direction of the multilayer body and an axial direction of the coil are parallel to a first main surface. A distance between the coil conductors adjacent to each other in the lamination direction is from 4 μm to 8 μm. Each coil conductor includes a line portion and a land portion that is disposed at an end portion of the line portion. The land portions of the coil conductors adjacent to each other in the lamination direction are connected to each other with a via conductor interposed therebetween. A width of the line portion is from 30 μm to 50 μm. An inner diameter of each coil conductor is from 50 μm to 100 μm. ## Claims ### Claim 1 A multilayer coil component comprising: a multilayer body that includes insulating layers laminated in a length direction and that contain a coil; and a first outer electrode and a second outer electrode that are electrically connected to the coil, wherein the coil includes coil conductors that are laminated in the length direction together with the insulating layers and that are electrically connected to each other, wherein the multilayer body has a first end surface and a second end surface that face each other in the length direction, a first main surface and a second main surface that face each other in a height direction perpendicular to the length direction, and a first side surface and a second side surface that face each other in a width direction perpendicular to the length direction and the height direction, wherein the first outer electrode covers the entire first end surface, wherein the second outer electrode covers the entire second end surface, wherein a lamination direction of the multilayer body and an axial direction of the coil are parallel to the first main surface, wherein a distance between the coil conductors adjacent to each other in the lamination direction is from 4 μm to 8 μm, wherein each coil conductor includes a line portion and a land portion that is disposed at an end portion of the line portion, wherein the land portions of the coil conductors adjacent to each other in the lamination direction are connected to each other with a via conductor interposed therebetween, wherein a width of the line portion is from 30 μm to 50 μm, wherein the first outer electrode extends from the first end surface, and covers a part of the first main surface, a part of the second main surface, a part of the first side surface, and a part of the second side surface, and wherein when viewed in a direction orthogonal to the axial direction of the coil, the first outer electrode overlaps a portion of the coil conductor. ### Claim 2 (depends on 1) The multilayer coil component according to claim 1, wherein the width of the line portion is from 30 μm to 40 μm. ### Claim 3 (depends on 2) The multilayer coil component according to claim 2, wherein the distance between the coil conductors adjacent to each other in the lamination direction is from 5 μm to 7 μm. ### Claim 4 (depends on 2) The multilayer coil component according to claim 2, wherein a number of the coil conductors that are laminated is from 40 to 60. ### Claim 5 (depends on 2) The multilayer coil component according to claim 2, wherein a length of the multilayer body is from 560 μm to 600 μm. ### Claim 6 (depends on 2) The multilayer coil component according to claim 2, wherein a length of a region in which the coil conductors are disposed in the lamination direction is in a range of from 85% to 95% of a length of the multilayer body. ### Claim 7 (depends on 2) The multilayer coil component according to claim 2, wherein a length of a region in which the coil conductors are disposed in the lamination direction is in a range of from 90% to 95% of a length of the multilayer body. ### Claim 8 (depends on 2) The multilayer coil component according to claim 2, wherein the first main surface is a mounting surface, the first outer electrode extends so as to cover the portion of the first end surface and a portion of the first main surface, and the second outer electrode extends so as to cover the portion of the second end surface and a portion of the first main surface. ### Claim 9 (depends on 1) The multilayer coil component according to claim 1, wherein the distance between the coil conductors adjacent to each other in the lamination direction is from 5 μm to 7 μm. ### Claim 10 (depends on 9) The multilayer coil component according to claim 9, wherein a number of the coil conductors that are laminated is from 40 to 60. ### Claim 11 (depends on 9) The multilayer coil component according to claim 9, wherein a length of the multilayer body is from 560 μm to 600 μm. ### Claim 12 (depends on 1) The multilayer coil component according to claim 1, wherein a number of the coil conductors that are laminated is from 40 to 60. ### Claim 13 (depends on 1) The multilayer coil component according to claim 1, wherein a length of the multilayer body is from 560 μm to 600 μm. ### Claim 14 (depends on 1) The multilayer coil component according to claim 1, wherein a length of a region in which the coil conductors are disposed in the lamination direction is in a range of from 85% to 95% of a length of the multilayer body. ### Claim 15 (depends on 1) The multilayer coil component according to claim 1, wherein a length of a region in which the coil conductors are disposed in the lamination direction is in a range of from 90% to 95% of a length of the multilayer body. ### Claim 16 (depends on 1) The multilayer coil component according to claim 1, wherein the first main surface is a mounting surface, the first outer electrode extends so as to cover the portion of the first end surface and a portion of the first main surface, and the second outer electrode extends so as to cover the portion of the second end surface and a portion of the first main surface. ### Claim 17 (depends on 1) A bias-tee circuit in an optical communication circuit having the multilayer coil component according to claim 1.