# US 2026/0100306 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 2026/0100306 A1 - Document ID: US20260100306A1 - Status: Published application - Kind: A1 - Application number: 19/220,848 - Filed: 2025-05-28 - Published: 2026-04-09 - Earliest claimed: 2024-10-08 - Assignees: Samsung Electro-Mechanics Co., Ltd. - Applicants: Samsung Electro-Mechanics Co., Ltd. - Inventors: Joung Hee CHO; Dong Gun LEE; Dong Hwi AHN - Web page: https://patentgrep.com/patent/US20260100306A1 ## CPC - H01F 27/2828: {Construction of conductive connections, of leads} - H01F 17/04: with magnetic core - H01F 27/292: {Surface mounted devices} - H01F 2017/048: {with encapsulating core, e.g. made of resin and magnetic powder} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract A coil component includes a body having first and second side surfaces opposing each other in a first direction and third and fourth side surfaces opposing each other in a second direction. The body includes a magnetic material. A coil is disposed within the body, and a lead frame is connected to an end of the coil. The lead frame includes a side-surface portion positioned on the first and second side surfaces of the body and at least one extension portion extending outward from the side-surface portion in the second direction, protruding outward from the body. The extension portion may be formed by bending or cutting a portion of the lead frame, providing improved adhesion strength and vibration resistance when mounted on a substrate. ## Claims ### Claim 1 A coil component, comprising: a body including first and second side surfaces opposing each other in a first direction, third and fourth side surfaces opposing each other in a second direction, and including a magnetic material; a coil disposed in the body; and a lead frame connected to an end of the coil, wherein the lead frame includes a side-surface portion disposed on the first side surface and the second side surface of the body, and at least one extension portion disposed outside the side-surface portion with respect to the second direction and protruding outward from the body. ### Claim 2 (depends on 1) The coil component of claim 1, wherein at least a portion of the extension portion is positioned farther from a first side surface and a second side surface of the body than the side-surface portion. ### Claim 3 (depends on 2) The coil component of claim 2, wherein, when a length of the extension portion protruding farther outward from the first and second side surfaces of the body than the side-surface portion is defined as a, and a length in the first direction of the body is defined as b, wherein a ratio of a/b is greater than 0 and satisfies 0.065 or lower. ### Claim 4 (depends on 1) The coil component of claim 1, wherein at least a portion of the extension portion is positioned at a level lower than a level of the first and second side surfaces of the body. ### Claim 5 (depends on 1) The coil component of claim 1, wherein a plurality of the extension portions are formed, and wherein the plurality of extension portions are spaced apart from each other in the second direction with the side-surface portion interposed therebetween. ### Claim 6 (depends on 5) The coil component of claim 5, wherein a distance at which the plurality of extension portions are spaced apart from each other in the second direction is equal to a length of the side-surface portion in the second direction. ### Claim 7 (depends on 1) The coil component of claim 1, wherein the lead frame further includes a lower-surface portion disposed on a lower surface of the body and connected to the side-surface portion, and wherein the lower-surface portion is integrally formed with the extension portion. ### Claim 8 (depends on 7) The coil component of claim 7, wherein a length in the second direction of the lower-surface portion is greater than a length in the second direction of the side-surface portion. ### Claim 9 (depends on 7) The coil component of claim 7, wherein a bottom surface of the lower-surface portion includes a plurality of recesses having a slit shape extending in the second direction, and wherein the plurality of recesses are spaced apart from each other in the first direction. ### Claim 10 (depends on 1) The coil component of claim 1, wherein the extension portion includes a protrusion having at least a portion extending inward into the body in the second direction. ### Claim 11 (depends on 10) The coil component of claim 10, wherein a groove of which a partial region is removed to correspond to the protrusion is formed in the side-surface portion. ### Claim 12 A coil component, comprising: a body including first and second side surfaces opposing each other in a first direction, third and fourth side surfaces opposing each other in a second direction, and including a magnetic material; a coil disposed in the body; and a lead frame connected to an end of the coil, wherein the lead frame includes a lower-surface portion disposed on a lower surface of the body, and at least one extension portion connected to the lower-surface portion and protruding outwardly of the body, and wherein a length of the lower-surface portion is greater than a length of the extension portion in the second direction. ### Claim 13 (depends on 12) The coil component of claim 12, wherein, when a length in the second direction of the lower-surface portion is defined as c, and a length in the second direction of the extension portion is defined as d, wherein a ratio defined as d/c is greater than 0 and satisfies 0.083 or lower. ### Claim 14 (depends on 12) The coil component of claim 12, wherein at least a portion of the extension portion is positioned at a level lower than a level of the first and second side surfaces of the body. ### Claim 15 (depends on 12) The coil component of claim 12, wherein a plurality of the extension portions are formed, and wherein the plurality of extension portions are disposed at opposite ends of the lower-surface portion along the second direction. ### Claim 16 (depends on 15) The coil component of claim 15, wherein a distance at which the plurality of extension portions are spaced apart from each other in the second direction is less than a length of the lower-surface portion in the second direction. ### Claim 17 (depends on 12) The coil component of claim 12, wherein a cut surface defines a boundary between the extension portion and the side-surface portion.