# US 11,309,116 B2 · Electronic component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,309,116 B2 - Document ID: US11309116B2 - Status: Granted - Kind: B2 - Application number: 16/201,971 - Filed: 2018-11-27 - Published: 2019-05-30 - Granted: 2022-04-19 - Earliest claimed: 2017-11-29 - Assignees: Murata Manufacturing Co., Ltd. - Applicants: Murata Manufacturing Co., Ltd. - Inventors: Kouhei Matsuura; Morihiro Hamano; Keiichi Tsuduki - Web page: https://patentgrep.com/patent/US11309116B2 ## CPC - H01F 17/0013: {with stacked layers} - H01F 17/0033: {with the coil helically wound around a magnetic core} - H01F 27/2804: {Printed windings} - H01F 27/292: {Surface mounted devices} - H01F 41/0233: {Manufacturing of magnetic circuits made from sheets (magnetic cores made from sheets H01F27/245; soft magnetic alloys in the form of sheets H01F1/16)} - H01F 41/046: {structurally combined with ferromagnetic material} - H01F 38/48: {Common mode inductor for reducing or eliminating common mode noise on parallel lines} - H01F 2017/0066: {with a magnetic layer} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract An electronic component with a plurality of coil conductor layers laminated such that a coil conductor having a coil pattern on a surface of an insulation layer is formed on each of the plurality of coil conductor layers. The electronic component includes a laminated body in which a bottom face side extended electrode layer, a primary coil conductor layer including a primary coil conductor, a secondary coil conductor layer including a secondary coil conductor, a tertiary coil conductor layer including a tertiary coil conductor, a parallel primary coil conductor layer including a parallel primary coil conductor, and a top face side extended electrode layer are laminated in this order. The electronic component further includes first through sixth external electrodes on a surface of the laminated body, which are connected to the primary, secondary, tertiary and parallel primary coil conductors. ## Claims ### Claim 1 An electronic component with a plurality of coil conductor layers laminated wherein a coil conductor having a coil pattern on a surface of an insulation layer is formed on each of the plurality of coil conductor layers, the electronic component comprising: a laminated body in which a bottom face side extended electrode layer, a primary coil conductor layer including a primary coil conductor, a secondary coil conductor layer including a secondary coil conductor, a tertiary coil conductor layer including a tertiary coil conductor, a parallel primary coil conductor layer including a parallel primary coil conductor, and a top face side extended electrode layer are laminated in this order; and a first external electrode; a second external electrode; a third external electrode; a fourth external electrode; a fifth external electrode; and a sixth external electrode, wherein all of the external electrodes are provided on a surface of the laminated body, wherein the primary coil conductor is connected to the first external electrode and the fourth external electrode, the secondary coil conductor is connected to the second external electrode and the fifth external electrode, the tertiary coil conductor is connected to the third external electrode and the sixth external electrode, the parallel primary coil conductor is connected to the first external electrode and the fourth external electrode, the primary coil conductor and the parallel primary coil conductor are connected in parallel, each of the primary coil conductor, the secondary coil conductor, the tertiary coil conductor and the parallel primary coil conductor has a coil pattern, an inner end which is one end of the coil pattern and is disposed inside the coil pattern, and an outer end which is the other end of the coil pattern and is disposed outside the coil pattern, the inner end of the primary coil conductor and the inner end of the secondary coil conductor are connected to the bottom face side extended electrode layer through a first via hole conductor and a second via hole conductor both of which are provided inside the coil pattern, respectively, the inner end of the tertiary coil conductor and the inner end of the parallel primary coil conductor are connected to the top face side extended electrode layer through a third via hole conductor and a fourth via hole conductor both of which are provided inside the coil pattern, respectively, in a top view of the laminated body, the first via hole conductor and the second via hole conductor are disposed at a position to overlap any one of the third via hole conductor and the fourth via hole conductor, and a number of via hole conductors provided inside the coil pattern is two at a maximum in each of all coil conductor layers constituting the laminated body. ### Claim 2 (depends on 1) The electronic component according to claim 1, wherein the first external electrode, the second external electrode, and the third external electrode are provided on a first end face of the laminated body, the fourth external electrode, the fifth external electrode, and the sixth external electrode are provided on a second end face facing the first end face, the first external electrode, the second external electrode, and the third external electrode are disposed at positions facing the fourth external electrode, the fifth external electrode, and the sixth external electrode, respectively, the first external electrode is disposed between the second external electrode and the third external electrode, and the fourth external electrode is disposed between the fifth external electrode and the sixth external electrode. ### Claim 3 (depends on 2) The electronic component according to claim 2, wherein an inner magnetic path penetrating the primary coil conductor layer, the secondary coil conductor layer, the tertiary coil conductor layer, and the parallel primary coil conductor layer is provided at a position inside of a coil pattern in each of the primary coil conductor layer, the secondary coil conductor layer, the tertiary coil conductor layer, and the parallel primary coil conductor layer, and the position overlaps none of the first via hole conductor, the second via hole conductor, the third via hole conductor, and the fourth via hole conductor in a top view of the laminated body. ### Claim 4 (depends on 2) The electronic component according to claim 2, wherein the secondary coil conductor layer includes a plurality of secondary coil conductors having coil patterns substantially overlapping each other in the top view of the laminated body. ### Claim 5 (depends on 2) The electronic component according to claim 2, wherein the tertiary coil conductor layer includes a plurality of tertiary coil conductors having coil patterns substantially overlapping each other in the top view of the laminated body. ### Claim 6 (depends on 2) The electronic component according to claim 2, wherein a bottom face side magnetic layer and a top face side magnetic layer which are magnetic layers containing at least ferrite are further provided on a bottom of the bottom face side extended electrode layer, and a top of the top face side extended electrode layer, respectively. ### Claim 7 (depends on 2) The electronic component according to claim 2, wherein a number of windings of a coil pattern in each of the primary coil conductor layer, the secondary coil conductor layer, the tertiary coil conductor layer, and the parallel primary coil conductor layer is four or more. ### Claim 8 (depends on 2) The electronic component according to claim 2, wherein a pitch of a coil pattern in each of the primary coil conductor layer, the secondary coil conductor layer, the tertiary coil conductor layer, and the parallel primary coil conductor layer is from 28μ to 34 μm. ### Claim 9 (depends on 2) The electronic component according to claim 2, wherein the laminated body has an outer dimension of from 0.80 mm to 1.00 mm in length, from 0.58 mm to 0.78 mm in width, and from 0.25 mm to 0.45 mm in height. ### Claim 10 (depends on 1) The electronic component according to claim 1, wherein an inner magnetic path penetrating the primary coil conductor layer, the secondary coil conductor layer, the tertiary coil conductor layer, and the parallel primary coil conductor layer is provided at a position inside of a coil pattern in each of the primary coil conductor layer, the secondary coil conductor layer, the tertiary coil conductor layer, and the parallel primary coil conductor layer, and the position overlaps none of the first via hole conductor, the second via hole conductor, the third via hole conductor, and the fourth via hole conductor in a top view of the laminated body. ### Claim 11 (depends on 10) The electronic component according to claim 10, wherein the secondary coil conductor layer includes a plurality of secondary coil conductors having coil patterns substantially overlapping each other in the top view of the laminated body. ### Claim 12 (depends on 10) The electronic component according to claim 10, wherein the tertiary coil conductor layer includes a plurality of tertiary coil conductors having coil patterns substantially overlapping each other in the top view of the laminated body. ### Claim 13 (depends on 10) The electronic component according to claim 10, wherein a bottom face side magnetic layer and a top face side magnetic layer which are magnetic layers containing at least ferrite are further provided on a bottom of the bottom face side extended electrode layer, and a top of the top face side extended electrode layer, respectively. ### Claim 14 (depends on 1) The electronic component according to claim 1, wherein the secondary coil conductor layer includes a plurality of secondary coil conductors having coil patterns substantially overlapping each other in the top view of the laminated body. ### Claim 15 (depends on 1) The electronic component according to claim 1, wherein the tertiary coil conductor layer includes a plurality of tertiary coil conductors having coil patterns substantially overlapping each other in the top view of the laminated body. ### Claim 16 (depends on 1) The electronic component according to claim 1, wherein a bottom face side magnetic layer and a top face side magnetic layer which are magnetic layers containing at least ferrite are further provided on a bottom of the bottom face side extended electrode layer, and a top of the top face side extended electrode layer, respectively. ### Claim 17 (depends on 16) The electronic component according to claim 16, wherein a bottom face side insulator layer and a top face side insulator layer which are insulator layers containing at least glass ceramic are further provided on a bottom of the bottom face side magnetic layer and a top of the top face side magnetic layer. ### Claim 18 (depends on 1) The electronic component according to claim 1, wherein a number of windings of a coil pattern in each of the primary coil conductor layer, the secondary coil conductor layer, the tertiary coil conductor layer, and the parallel primary coil conductor layer is four or more. ### Claim 19 (depends on 1) The electronic component according to claim 1, wherein a pitch of a coil pattern in each of the primary coil conductor layer, the secondary coil conductor layer, the tertiary coil conductor layer, and the parallel primary coil conductor layer is from 28 μm to 34 μm. ### Claim 20 (depends on 1) The electronic component according to claim 1, wherein the laminated body has an outer dimension of from 0.80 mm to 1.00 mm in length, from 0.58 mm to 0.78 mm in width, and from 0.25 mm to 0.45 mm in height.