Coil components

Abstract

The margins of the coil components are adjusted to improve the filling rate of the coil's air core. [Solution] The coil component 1000 has a first side surface 101 and a second side surface 102 facing a first direction X, and a third side surface 103 and a fourth side surface 104 facing a second direction Y, and includes a body 101 containing a magnetic material, a coil 300 disposed inside the body and forming at least one turn, and lead frames 400 and 500 connected to both ends of the coil inside the body and disposed on the first and second side surfaces of the body, where My is the shortest distance between the coil and the third side surface of the body, and W is the length along the second direction of the body, then My / W is 0 or more and 0.1 or less.

Description

Technical Field

[0001] The present invention relates to a coil component.

Background Art

[0002] An inductor, which is one of the coil components, is a typical passive electronic component used in electronic devices together with a resistor and a capacitor.

[0003] Recently, the market for power inductors for high current, such as AI, electrical equipment, and robots, has been increasing. In particular, electrical equipment parts require high reliability technology for improving safety, and need to satisfy high current characteristics and cope with vibration resistance.

[0004] Especially when the main body is made of metal magnetic powder, the coil can have a structure embedded in the main body, but the size of the air core part cannot be infinitely large, and there may be a limit to the component design margin.

Summary of the Invention

Problems to be Solved by the Invention

[0005] According to an embodiment of the present invention, one object is to adjust the margin of the coil component to improve the filling rate of the coil air core part.

Means for Solving the Problems

[0006] An embodiment of the present invention includes a main body containing a magnetic substance, including a first side surface and a second side surface facing each other in a first direction, and a third and a fourth side surface facing each other in a second direction, a coil disposed in the main body and forming at least one turn, and lead frames disposed on the first side surface and the second side surface of the main body and connected to both ends of the coil inside the main body. When the shortest distance between the coil and the third side surface of the main body is My and the length of the main body along the second direction is W, My / W satisfies 0 or more and 0.1 or less, and provides a coil component.

[0007] Another embodiment of the present invention provides a coil component comprising a body containing a magnetic material, including first and second sides facing a first direction, and third and fourth sides facing a second direction; a coil disposed within the body and forming at least one turn; and lead frames connected to both ends of the coil inside the body and disposed on the first and second sides of the body, wherein when the shortest distance between the coil and the first side of the body is Mx and the length of the body along the first direction is L, Mx / L is 0 or more and 0.1 or less. [Effects of the Invention]

[0008] According to one embodiment of the present invention, a coil component can be provided that improves the filling rate of the coil's air core by adjusting the margin of one component. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view showing a coil component related to one embodiment of the present invention. [Figure 2] This figure shows a cross-section along the line I-I' in Figure 1. [Figure 3] This figure shows the main body (molded part and cover part) of Figure 1. [Figure 4] This figure shows the main body (molded part and cover part) of one modified example shown in Figure 3. [Figure 5] This figure shows the main body (molded part and cover part) of another modified example of Figure 3. [Figure 6] This is a transparent view of the coil component as seen from the Z direction. [Figure 7] This is one modified example shown in Figure 6. [Figure 8] Figure 7 is a view from the Y direction. [Figure 9] This is another variation of Figure 6. [Figure 10] This is yet another variation of Figure 6. [Modes for carrying out the invention]

[0010] The terminology used in this application is used solely to describe specific embodiments and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “includes” or “having” are intended to specify the existence of features, figures, stages, actions, components, parts, or combinations thereof described in the specification, and should be understood not to preemptively exclude the possibility of the existence or addition of one or more other features, figures, stages, actions, components, parts, or combinations thereof. Throughout the specification, “above” means located above or below the part in question, and does not necessarily mean located above the direction of gravity.

[0011] Furthermore, the term "connection" shall not refer only to cases where each component is in direct physical contact with another component, but shall also encompass cases where other components are interposed between the components, and each component is in contact with the other components.

[0012] The dimensions and thicknesses of each component shown in the drawings are arbitrary for illustrative purposes, and therefore the present invention is not necessarily limited to those shown.

[0013] In drawings, the X direction can be defined as the first direction or length direction, the Y direction as the second direction or width direction, and the Z direction as the third direction or thickness direction.

[0014] Hereinafter, coil components according to embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, the same drawing number will be assigned to identical or corresponding components, and redundant explanations will be omitted.

[0015] Electronic devices utilize various types of electronic components, and various types of coil components can be appropriately used between these electronic components for purposes such as noise reduction.

[0016] That is, in an electronic device, coil components can be used for power inductors, high-frequency inductors, general beads, GHz beads, common mode filters, etc.

[0017] FIG. 1 is a perspective view showing a coil component according to an embodiment of the present invention, and FIG. 2 is a view showing a cross-section taken along the line I-I' of FIG. 1.

[0018] Referring to FIG. 1, a coil component according to an embodiment of the present invention includes a main body 100 containing a magnetic substance, a coil 300 disposed within the main body 100, and lead frames 400 and 500 disposed on the first side surface 101 and the second side surface 102 of the main body.

[0019] The main body 100 forms the overall appearance of the coil component 1000 according to the present embodiment and embeds the coil 300 therein.

[0020] The main body 100 can be formed in an overall hexahedron shape. Based on FIG. 1, the main body 100 includes a first side surface 101 and a second side surface 102 facing each other in the first direction (X direction), a third side surface 103 and a fourth side surface 104 facing each other in the second direction (Y direction), and one surface 105 and the other surface 106 facing each other in the third direction (Z direction). Each of the first to fourth side surfaces 101, 102, 103, 104 of the main body 100 corresponds to the side surface of the main body 100 connecting the one surface 105 and the upper surface 106.

[0021] The length of the coil component 1000 can be defined as the maximum length among multiple line segments parallel to the length direction X, obtained by connecting the two outermost boundary lines facing the length direction X of the coil component 1000 as shown in the aforementioned cross-sectional photograph, based on an optical microscope or SEM (Scanning Electron Microscope) photograph of the cross-section (length direction X-thickness direction Z) at the center of the coil component 1000 in the width direction Y. Alternatively, the length of the coil component 1000 can be defined as the minimum length among multiple line segments parallel to the length direction X, obtained by connecting the two outermost boundary lines facing the length direction X of the coil component 1000 as shown in the aforementioned cross-sectional photograph. Alternatively, the length of the coil component 1000 can be defined as the arithmetic mean of the lengths of at least two line segments parallel to the length direction X, obtained by connecting the two outermost boundary lines facing the length direction X of the coil component 1000 as shown in the aforementioned cross-sectional photograph.

[0022] The thickness of the coil component 1000 can be defined as the maximum length of a plurality of line segments parallel to the thickness direction Z, obtained by connecting the two outermost boundary lines facing the thickness direction Z of the coil component 1000 as shown in the aforementioned cross-sectional photograph, based on an optical microscope or SEM (Scanning Electron Microscope) photograph of the cross-section of the coil component 1000 in the length direction X-thickness direction Z at the center of the width direction Y of the coil component 1000. Alternatively, the thickness of the coil component 1000 can be defined as the minimum length of a plurality of line segments parallel to the thickness direction Z, obtained by connecting the two outermost boundary lines facing the thickness direction Z of the coil component 1000 as shown in the aforementioned cross-sectional photograph. Alternatively, the thickness of the coil component 1000 can be defined as the arithmetic mean of the lengths of at least two line segments parallel to the thickness direction Z, obtained by connecting the two outermost boundary lines facing the thickness direction Z of the coil component 1000 as shown in the aforementioned cross-sectional photograph.

[0023] The width of the coil component 1000 can be defined as the maximum length of a plurality of line segments parallel to the width direction Y, obtained by connecting the two outermost boundary lines facing the width direction Y of the coil component 1000 as shown in the aforementioned cross-sectional photograph, based on an optical microscope or SEM (Scanning Electron Microscope) photograph of the cross-section (length direction X-width direction Y) at the center of the coil component 1000 in the thickness direction Z. Alternatively, the width of the coil component 1000 can be defined as the minimum length of a plurality of line segments parallel to the width direction Y, obtained by connecting the two outermost boundary lines facing the width direction Y of the coil component 1000 as shown in the aforementioned cross-sectional photograph. Alternatively, the width of the coil component 1000 can be defined as the arithmetic mean of the lengths of at least two line segments parallel to the width direction Y, obtained by connecting the two outermost boundary lines facing the width direction Y of the coil component 1000 as shown in the aforementioned cross-sectional photograph.

[0024] On the other hand, the length, width, and thickness of the coil component 1000 can also be measured using the micrometer method. The micrometer method involves setting a zero point with a Gage R&R (Repeatability and Reproducibility) micrometer, inserting the coil component 1000 according to this embodiment between the tips of the micrometer, and rotating the micrometer's measuring lever to perform the measurement. When measuring the length of the coil component 1000 using the micrometer method, the length can represent either a single measurement or the arithmetic mean of multiple measurements. This can also be applied to the width and thickness of the coil component 1000.

[0025] The length, width, and thickness of each of the coil component 1000 can refer to the length, width, and thickness of each of the main body 100. However, it is not limited to this, and it can also refer to the length, width, and thickness of the main body 100 on which the insulating layer is formed externally, or it can refer to the length, width, and thickness of the main body 100 on which the lead frames 400, 500 are formed.

[0026] The main body 100 may contain a magnetic material. The main body 100 can be formed by filling a mold with a magnetic material, or by filling a mold with a composite material containing a magnetic material and an insulating resin. A molding process in which high temperature and high pressure are applied to the magnetic material or composite material in the mold may be carried out further, but is not limited thereto.

[0027] The magnetic material contained in the main body 100 may, for example, be ferrite or metallic magnetic powder.

[0028] The ferrite powder may be at least one of the following, for example: spinel-type ferrites such as Mg-Zn, Mn-Zn, Mn-Mg, Cu-Zn, Mg-Mn-Sr, and Ni-Zn; hexagonal ferrites such as Ba-Zn, Ba-Mg, Ba-Ni, Ba-Co, and Ba-Ni-Co; garnet-type ferrites such as Y-type; and Li-based ferrites.

[0029] The metallic magnetic powder may contain one or more elements selected from the group consisting of iron (Fe), silicon (Si), chromium (Cr), cobalt (Co), molybdenum (Mo), aluminum (Al), niobium (Nb), copper (Cu), and nickel (Ni). For example, the metallic magnetic powder may be at least one of the following: pure iron powder, Fe-Si alloy powder, Fe-Si-Al alloy powder, Fe-Ni alloy powder, Fe-Ni-Mo alloy powder, Fe-Ni-Mo-Cu alloy powder, Fe-Co alloy powder, Fe-Ni-Co alloy powder, Fe-Cr alloy powder, Fe-Cr-Si alloy powder, Fe-Si-Cu-Nb alloy powder, Fe-Ni-Cr alloy powder, or Fe-Cr-Al alloy powder.

[0030] The metallic magnetic powder may be amorphous or crystalline. For example, the metallic magnetic powder may be an Fe-Si-B-Cr amorphous alloy powder, but is not necessarily limited to this.

[0031] The ferrite and metallic magnetic powders may each have an average diameter of approximately 0.1 μm to 30 μm, but are not limited to this.

[0032] The main body 100 may contain two or more types of magnetic materials. Here, "different types of magnetic materials" means that at least one of the following characteristics of the magnetic materials—diameter, composition, crystallinity, and shape—is distinguishable from one another. For example, the main body 100 may contain two or more magnetic powders with different diameters.

[0033] The insulating resin may contain, but is not limited to, epoxy, polyimide, liquid crystal polymer, etc., either alone or in combination.

[0034] Figure 3 shows a molded portion and a cover portion according to one embodiment of the present invention. Referring to Figure 3, the main body 100 can include a molded portion 110 in which a coil is arranged inside and a cover portion 120 arranged on the molded portion.

[0035] In the coil component 100 according to the present invention, the body 100 can be modified during the formation of the molded portion 110 and the cover portion 120 by changing the shape of the tablet to an E-tablet and an I-tablet, respectively, thereby effectively adjusting the margin between the coil 300 and the side of the body, while simultaneously improving the core filling rate.

[0036] The molded portion 110 is positioned below the cover portion 120, and the coil 300 is placed inside it. The molded portion 110 may have one surface (top surface) facing the cover portion 120, another surface (bottom surface) facing that surface, and multiple sides connecting the two surfaces. The multiple sides of the molded portion 110 may constitute part of the multiple sides of the main body 100.

[0037] The molded portion 110 may include a core C that penetrates the coil 300. Here, "penetrating the coil 300" can mean penetrating the air core of the coil 300 that forms at least one turn. The core C may be located in the inner region of the coil 300 that forms at least one turn, and its cross-section may be circular or elliptical.

[0038] An opening Ox may be formed in the molded portion 110 that exposes the coil in a first direction (X direction). Similarly, an opening Oy may be formed in the molded portion 110 that exposes the coil in a second direction (Y direction). By forming openings Ox and Oy on the surfaces of the molded portion 110 that constitute the sides 101, 102, 103, and 104 of the main body 100 as described above, the distance (margin) between the coil 300 and the sides 101, 102, 103, and 104 of the main body 100 can be effectively adjusted when the main body 100 is formed under pressure.

[0039] The cover portion 120 is positioned on the upper surface (one side) of the mold portion 110 and can cover the coil 300. After being positioned on the mold portion 110 and the coil 300, the cover portion 120 can be pressurized and bonded to the mold portion 110. The cover portion 120 may have one side (bottom surface) facing the mold portion 110, another side (top surface) facing that side, and multiple sides connecting the two sides. The multiple sides of the cover portion 120, together with the multiple sides of the mold portion 110, can constitute multiple sides of the main body 100.

[0040] Figure 4 shows the main body (molded part and cover part) of one modified example of Figure 3.

[0041] Referring to Figure 4, an opening Oy exposing the coil in the second direction (Y direction) may be formed, but an opening exposing the coil in the first direction (X direction) may not be formed.

[0042] Figure 5 shows the main body (molded part and cover part) of another modified example of Figure 3.

[0043] Referring to Figure 5, the molded portion 110 may have an opening Ox that exposes the coil in the first direction (X direction), but it may not have an opening that exposes the coil in the second direction (Y direction).

[0044] As described above, by forming the opening O in the first direction (X direction) or the second direction (Y direction), the margin of the coil 300 along the first or second direction can be freely designed.

[0045] The coil 300 is placed inside the main body 100 and exhibits the characteristics of a coil component. For example, when the coil component 1000 according to this embodiment is used as a power inductor, the coil 300 can stabilize the power supply of electronic equipment by storing the electric field as a magnetic field and maintaining the output voltage.

[0046] The coil 300 may include a winding portion 310 that forms at least one turn around the core C, and lead portions 331 and 332 that are connected to the lead frame, which will be described later.

[0047] Referring to Figures 1 and 2, the winding section 310 can form multiple turns from the core 110 toward the outside of the body 100 along the first direction (X direction) and the second direction (Y direction) of the body 100. The winding section 310 may be arranged parallel to one surface 105 of the body, and the winding axis of the winding section 310 may be formed parallel to the third direction (Z direction).

[0048] The winding section 310 may be wound in an overall circular or elliptical shape, and a core C may be placed in the center.

[0049] The first and second lead sections 331 and 332 correspond to both ends of the coil 300 and are connected to the lead frames 400 and 500 inside the main body 100. That is, with reference to Figure 2, the first lead section 331 can be connected to the first lead frame 400, and the second lead section 332 can be connected to the second lead frame 500.

[0050] The coil 300 may be an air-core coil, may be composed of metal wire (MW) with a circular cross-section, or may be composed of a rectangular coil, but is not limited to these.

[0051] The coil 300 may be formed by winding conductive metal, and the remaining portion, excluding the portion in contact with the lead frames 400 and 500 described later, may be coated with an insulating coating layer. Specifically, the coil 300 can be formed by spirally winding a metal wire (MW), such as a copper wire (Cu-wire), which includes a metal wire and an insulating coating layer covering the surface of the metal wire.

[0052] Figure 6 is a transparent view of the coil component as seen from the Z direction.

[0053] Referring to Figure 6, the margin structure of the coil and the side of the main body according to this embodiment will be described in detail.

[0054] The coil component 1000 according to this embodiment can adjust the shortest distance between the coil 300 and the third side surface 103 or the fourth side surface 104 of the main body 100. Specifically, when My is the shortest distance between the coil 300 and the third side surface 103 of the main body, and W is the length along the second direction of the main body, My / W can satisfy the condition of 0 to 0.1.

[0055] The shortest distance My between the coil 300 and the third side surface 103 of the main body can be measured by the following method.

[0056] A sample of the coil component 1000 can be obtained by non-destructive testing (NDT), for example, by using X-ray to obtain a sample that has been transmitted through the XY plane (LW plane). In the obtained sample, the outermost boundary line and the boundary line of the third side surface 103 are connected in the second direction (Y direction) of the outermost turn of the winding portion 310 of the coil 300, and multiple line segments parallel to the second direction (Y direction) are calculated. The shortest distance between the coil 300 and the third side surface 103 of the main body represents the minimum value among the lengths of the above multiple line segments, and can represent the arithmetic mean of the lengths of two or more line segments. On the other hand, since the lead-out portions 331 and 332 are unrelated to the winding portion 310 that forms the turn, the distance between the lead-out portions 331 and 332 and the side surface of the main body does not need to be considered when measuring the above distance.

[0057] However, this is not the only method; the distance can also be determined by taking cross-sections of the coil components in the XY plane (LW plane) during processes such as polishing using destructive physical analysis (DPA).

[0058] The shortest distance between the coil 300 and the fourth side surface 104 of the main body 100 may be the same as My. That is, the margin between the coil 300 and the third side surface 103 of the main body 100 and the margin between the coil 300 and the fourth side surface 104 of the main body 100 may be the same.

[0059] Referring to Figure 6, if the shortest distance between the coil 300 and the first side surface 101 of the main body 100 is Mx, and the length of the main body 100 along the first direction is L, then Mx / L can satisfy the condition of being between 0 and 0.1.

[0060] The shortest distance between the coil 300 and the second side surface 102 of the main body 100 may be the same as Mx. That is, the margin between the coil 300 and the first side surface 101 of the main body 100 and the margin between the coil 300 and the second side surface 102 of the main body 100 may be the same.

[0061] The shortest distance between the coil 300 and the first side surface 101 of the main body can be determined by analogy with the explanation regarding the shortest distance between the coil 300 and the third side surface 103 of the main body.

[0062] Table 1 below shows the measured characteristics (Ls, Rdc, Isat) of the coil component when the coil component margins Mx and My were adjusted, based on Model 1, which has a coil component length of 6.0 mm, a width of 6.0 mm, and a thickness of 3.0 mm, and Model 2, which has a coil component length of 6.0 mm, a width of 6.0 mm, and a thickness of 4.0 mm.

[0063] [Table 1]

[0064] Referring to [Table 1], it can be seen that when the margin is around 100 or 200 μm, compared to when the margin is 600 μm, Ls has its maximum value, and Isat continues to increase as the margin decreases.

[0065] In other words, when the margin has a length value in the range of 0 to 1 / 10 compared to the length and width of the coil component, the size of the air core can be sufficiently secured, and the characteristics of the coil component can be efficiently improved.

[0066] Figure 7 is a modified example of Figure 6.

[0067] Referring to Figure 7, the winding portion 310 of the coil 300 can extend to the third side surface 103 and the fourth side surface 104 of the main body 100. In this case, there is no margin between the coil 300 and the third side surface 103 and the fourth side surface 104, which means that the ratio My / W is 0.

[0068] Figure 8 is a view of Figure 7 from the Y direction.

[0069] Referring to Figure 8, the winding portion 310 can extend onto the surface of the main body 100. As shown in Figure 8(a), the winding portion 310 can extend linearly onto the surface of the main body 100. Alternatively, referring to Figure 8(b), the winding portion 310 can extend rectangularly onto the surface of the main body 100, having length in the first direction (X direction). Although not shown in the figure, an insulating film may be further formed on the winding portion 310 extending onto the surface of the main body 100 so that the winding portion 310 is not exposed on the component surface.

[0070] Figure 9 is another variation of Figure 6.

[0071] Referring to Figure 9, the winding portion 310 of the coil 300 can extend to the first side surface 101 and the second side surface 102 of the main body 100. In this case, there is no margin between the coil 300 and the first side surface 101 and the second side surface 102, which means that the ratio Mx / L is 0.

[0072] Figure 10 is yet another variation of Figure 6.

[0073] Referring to Figure 10, the winding portion 310 of the coil 300 can extend to the third side surface 103 and the fourth side surface 104 of the main body 100. In such a case, there is no margin between the coil 300 and the third side surface 103 and the fourth side surface 104, which means that the ratio My / W is 0.

[0074] At the same time, the winding portion 310 of the coil 300 can extend to the first side surface 101 and the second side surface 102 of the main body 100. In such a case, there may be no margin between the coil 300 and the first side surface 101 and the second side surface 102, meaning that the ratio Mx / L is 0.

[0075] The lead frames 400 and 500 are connected to both ends of the coil 300 and inside the main body 100, and are positioned on the sides 101 and 102 of the main body, serving as external electrodes for the coil component according to this embodiment.

[0076] Referring to Figure 2, the lead frames 400 and 500 may include a first lead frame 400 positioned on the first side surface 101 of the main body 100, and a second lead frame 500 positioned on the second side surface 102 of the main body 100. The first lead frame 400 is connected to the first lead section 331 inside the main body 100, and the second lead frame 500 is connected to the second lead section 332 inside the main body 100.

[0077] The lead frames 400 and 500 are positioned on the first side 101 and second side 102 of the main body 100 and may have a structure that allows them to be folded onto one side 101 of the main body.

[0078] The lead frames 400 and 500 can contain metals such as Ag, Ag-Pd, Ni, and Cu, and selective Ni plating layers and Sn plating layers can be formed on the surface of the lead frames.

[0079] Although one embodiment of the present invention has been described above, any person with ordinary skill in the art can modify and change the present invention in various ways by adding, changing, or deleting components, etc., without departing from the spirit of the invention as described in the claims, and this can also be said to be within the scope of the rights of the present invention. [Explanation of symbols]

[0080] 1000: Coil parts 100: Main unit 110: Mold part 120: Cover section 300: Coil 310: Winding section 331, 332: Drawer part 400, 500: Lead frame

Claims

1. A body containing a magnetic material, including a first side and a second side facing the first direction, and a third and a fourth side facing the second direction, A coil disposed within the main body and forming at least one turn, The coil is connected to both ends of the main body and to a lead frame which is positioned on the first and second sides of the main body, A coil component in which, when My is the shortest distance between the coil and the third side surface of the main body, and W is the length along the second direction of the main body, My / W satisfies the condition of 0 or more and 0.1 or less.

2. The coil component according to claim 1, wherein the shortest distance between the coil and the fourth side surface of the main body is My.

3. The coil component according to claim 1, wherein when the shortest distance between the coil and the first side surface of the main body is Mx, and the length of the main body along the first direction is L, Mx / L satisfies 0 or more and 0.1 or less.

4. The coil component according to claim 3, wherein the shortest distance between the coil and the second side surface of the main body is Mx.

5. The coil component according to claim 1, wherein the coil extends to the third and fourth sides of the main body.

6. The coil component according to claim 1, wherein the coil extends to the first side and the second side of the main body.

7. The main body includes a molded portion in which a coil is arranged inside and a cover portion arranged on the molded portion. The coil component according to claim 1, wherein the molded portion includes a core that penetrates the coil.

8. The coil component according to claim 7, wherein the molded portion has an opening formed to expose the coil in the second direction.

9. The coil component according to claim 7, wherein the molded portion has an opening formed to expose the coil in the first direction.

10. The main body further includes a first surface and a second surface facing the third direction, The coil component according to claim 1, wherein the lead frame extends to the first surface of the main body.

11. A body containing a magnetic material, including a first side and a second side facing the first direction, and a third and a fourth side facing the second direction, A coil disposed within the main body and forming at least one turn, The coil is connected to both ends of the main body and to the inside of the main body, and includes a lead frame positioned on the first and second sides of the main body, A coil component in which, when the shortest distance between the coil and the first side surface of the main body is Mx, and the length along the first direction of the main body is L, Mx / L satisfies the condition of 0 or more and 0.1 or less.

12. The coil component according to claim 11, wherein the shortest distance between the coil and the second side surface of the main body is Mx.

13. The coil component according to claim 11, wherein the coil extends to the first side and the second side of the main body.

14. The main body includes a molded portion in which a coil is arranged inside and a cover portion arranged on the molded portion. The coil component according to claim 11, wherein the molded portion includes a core that penetrates the coil.

15. The coil component according to claim 14, wherein the molded portion has an opening formed to expose the coil in the first direction.

16. The main body further includes a first surface and a second surface facing the third direction, The coil component according to claim 11, wherein the lead frame extends to the first surface of the main body.

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