JP2019165233A - Electronic component and circuit module - Google Patents

Abstract

To provide an electronic component and a circuit module capable of reducing possibility that disconnection occurs in a winding.SOLUTION: An electronic component 10 includes a core 12, a first winding 16a, and external electrodes 14a to 14d. A flange portion of the core includes a flange main body 28a facing upward and having a first surface S1 positioned on an upper side than a winding core portion 22 of the core, and a first electrode formation portion 28a and a second electrode formation portion 28b each protruding toward the upper side than the first surface. The external electrode 14a is provided on a second surface S2a of the first electrode formation portion and connected to the first winding. A crotch space Sp1 surrounded by the first electrode formation portion, the second electrode formation portion and the first surface is formed. A predetermined section of the first winding away from the winding core portion to the external electrode extends toward an upper right side when viewed from a front side and does not have a portion overlapping the crotch space in the entire line width of the first winding.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electronic component and a circuit module provided with a winding type coil.

  As an invention related to a conventional electronic component, for example, a wound chip type common mode choke coil described in Patent Document 1 is known. FIG. 13 is a perspective view of a common mode choke coil 500 described in Patent Document 1. FIG. In FIG. 13, the direction in which the core portion 511 extends is defined as the front-rear direction. The direction in which the leg-shaped electrode portions 515a and 515b are arranged is defined as the left-right direction. A direction perpendicular to the front-rear direction and the left-right direction is defined as the up-down direction.

  The common mode choke coil 500 includes a core 510, leg-shaped electrode portions 515a and 515b, and windings 531a and 531b. The core 510 includes a winding core part 511 and a flange part 512. The winding core part 511 is a prismatic member extending in the front-rear direction. The collar portion 512 is provided at the rear end of the core portion 511 and projects from the core portion 511 in the vertical direction and the left-right direction. The leg-shaped electrode portions 515a and 515b are provided on the upper surface of the flange portion 512, and are arranged in this order from the right side to the left side. In addition, a groove 513 is provided in the flange portion 512. The groove 513 is located between the leg electrode part 515a and the leg electrode part 515b. As a result, the bottom of the groove 513 and the upper surface of the core 511 form a single plane.

  The windings 531a and 531b are wound around the winding core portion 511 so as to turn clockwise when viewed from the front side. The winding 531a extends in the groove 513 toward the upper right side after being separated from the core portion 511. One end of the winding 531a is connected to the leg-shaped electrode portion 515a. One end of the winding 531b is connected to the leg electrode portion 515b.

JP 2007-103596 A

  Incidentally, in recent years, after mounting the common mode choke coil 500 described in Patent Document 1 on a circuit board, the common mode choke coil 500 may be coated with a resin for moisture prevention. The inventor of the present application has discovered that when such a resin coating is applied to the common mode choke coil 500, the winding 531a may be disconnected. Furthermore, this inventor estimated the mechanism of generation | occurrence | production of a disconnection as follows. FIG. 14 is a diagram showing the resin and the winding 531a in a low temperature state. FIG. 15 is a diagram showing the resin and the winding 531a in a high temperature state.

  When the resin coating is applied to the common mode choke coil 500, the resin tends to accumulate in the grooves 513. The resin accumulated in the groove 513 forms a film in a triangular region A0 (see FIG. 13) surrounded by the upper surface of the winding core portion 511, the winding 531a, and the flange portion 512. Thereby, the coil | winding 531a and resin contact.

  When the common mode choke coil 500 is repeatedly exposed to a low temperature state and a high temperature state, the resin repeatedly contracts and expands. As shown in FIG. 13, the resin exists in the region A0 below the winding 531a. Therefore, when contracted, the winding 531a is pulled downward by the resin and bent so as to protrude downward as shown in FIG. On the other hand, since the resin is softened during expansion, a large force is not applied from the resin to the winding 531a. However, as shown in FIG. 15, while the resin expands, the winding 531a maintains a bent state. Therefore, the winding 531a is buried in the expanded resin in a bent state. Thereby, at the time of the next contraction, the winding 531a is further pulled downward by the resin and further bent so as to protrude downward. When such expansion and contraction of the resin are repeated, the bending of the winding 531a gradually increases, and finally the winding 531a is disconnected.

  Accordingly, an object of the present invention is to provide an electronic component and a circuit module that can reduce the possibility of disconnection in a winding.

The electronic component according to the first aspect of the present invention is
A winding core portion extending in the first direction and an end portion on one side of the winding core portion in the first direction and facing one side of the second direction orthogonal to the first direction. And a core that includes a flange protruding from the core portion,
A first winding and a second winding wound around the winding core;
An external electrode;
With
The buttocks
A collar body having a first surface facing one side in the second direction and located on one side in the second direction with respect to the core portion,
A first electrode forming portion and a second electrode forming portion protruding from the flange main body toward the one side in the second direction from the first surface;
Contains
The first electrode forming portion, at least a part of the first surface, and the second electrode forming portion are arranged from one side to the other in the third direction orthogonal to the first direction and the second direction. To the side in this order,
The first electrode forming portion has a second surface facing one side of the second direction,
The external electrode is provided on the second surface and connected to the first winding;
When viewed from the first direction, a crotch space surrounded by at least part of the first electrode forming portion, the second electrode forming portion, and the first surface is formed,
Defining a section from leaving the core portion in the first winding to reaching the external electrode as a predetermined section;
An end portion on one side in the third direction of the predetermined section is located on one side in the third direction with respect to the crotch space,
An end portion on the other side in the third direction of the predetermined section is located on the other side in the third direction with respect to the crotch space,
The predetermined section extends toward one side of the second direction and one side of the third direction when viewed from the first direction;
The collar body has a third surface that faces the other side of the first direction and is positioned between the first surface and the core portion in the second direction. ,
The predetermined section has a portion that overlaps the third surface when viewed from the first direction;
The third surface has a normal vector extending to the other side of the first direction and one side of the second direction.

The electronic component according to the second aspect of the present invention is
A winding core portion extending in the first direction and an end portion on one side of the winding core portion in the first direction and facing one side of the second direction orthogonal to the first direction. And a core that includes a flange protruding from the core portion,
A first winding and a second winding wound around the winding core;
An external electrode;
With
The buttocks
A collar body having a first surface facing one side in the second direction and located on one side in the second direction with respect to the core portion,
A first electrode forming portion and a second electrode forming portion protruding from the flange main body toward the one side in the second direction from the first surface;
Contains
The first electrode forming portion, at least a part of the first surface, and the second electrode forming portion are arranged from one side to the other in the third direction orthogonal to the first direction and the second direction. To the side in this order,
The first electrode forming portion has a second surface facing one side of the second direction,
The external electrode is provided on the second surface and connected to the first winding;
When viewed from the first direction, a crotch space surrounded by at least part of the first electrode forming portion, the second electrode forming portion, and the first surface is formed,
The first electrode forming portion has a fourth surface facing the other side of the third direction,
The second electrode forming portion has a fifth surface facing one side of the third direction,
The crotch space is a space surrounded by at least a part of the first surface, the fourth surface, and the fifth surface when viewed from the first direction;
The fourth surface has a normal vector extending to the other side of the third direction and to one side of the second direction, and / or the fifth surface has a third direction in the third direction. A normal vector extending to one side and one side in the second direction.

The electronic component according to the third aspect of the present invention is
A winding core portion extending in the first direction and an end portion on one side of the winding core portion in the first direction and facing one side of the second direction orthogonal to the first direction. And a core that includes a flange protruding from the core portion,
A first winding and a second winding wound around the winding core;
An external electrode;
With
The buttocks
A collar body having a first surface facing one side in the second direction and located on one side in the second direction with respect to the core portion,
A first electrode forming portion and a second electrode forming portion protruding from the flange main body toward the one side in the second direction from the first surface;
Contains
The first electrode forming portion, at least a part of the first surface, and the second electrode forming portion are arranged from one side to the other in the third direction orthogonal to the first direction and the second direction. To the side in this order,
The first electrode forming portion has a second surface facing one side of the second direction,
The external electrode is provided on the second surface and connected to the first winding;
The second surface has a main portion and a protrusion,
The main portion extends in the third direction when viewed from the second direction;
The protrusion protrudes from a position on one side in the third direction from an end on the other side in the third direction of the main part toward the other side in the first direction,
The external electrode is provided across the main portion and the protrusion.

The electronic component according to the fourth aspect of the present invention is
A winding core portion extending in the first direction and an end portion on one side of the winding core portion in the first direction and facing one side of the second direction orthogonal to the first direction. And a core that includes a flange protruding from the core portion,
A first winding and a second winding wound around the winding core;
An external electrode;
With
The buttocks
A collar body having a first surface facing one side in the second direction and located on one side in the second direction with respect to the core portion,
A first electrode forming portion and a second electrode forming portion protruding from the flange main body toward the one side in the second direction from the first surface;
Contains
The first electrode forming portion, at least a part of the first surface, and the second electrode forming portion are arranged from one side to the other in the third direction orthogonal to the first direction and the second direction. To the side in this order,
The flange portion protrudes from the core portion toward the other side in the second direction, and has a sixth surface.
The sixth surface is located on the other side in the second direction with respect to the core portion, and faces the other side in the first direction,
When viewed from the second direction, the sixth surface is orthogonal to the first direction so as to advance to one side of the first direction as it proceeds to one side of the third direction. It is inclined with respect to the surface.

A circuit module according to an aspect of the present invention is
Electronic components,
A circuit board including a substrate body having a first main surface, and a land electrode provided on the first main surface;
Coating resin,
With
The electronic component is
A winding core portion extending in the first direction and an end portion on one side of the winding core portion in the first direction and facing one side of the second direction orthogonal to the first direction. And a core that includes a flange protruding from the core portion,
A first winding and a second winding wound around the winding core;
An external electrode;
With
The buttocks
A collar body having a first surface facing one side in the second direction and located on one side in the second direction with respect to the core portion,
A first electrode forming portion and a second electrode forming portion protruding from the flange main body toward the one side in the second direction from the first surface;
Contains
The first electrode forming portion, at least a part of the first surface, and the second electrode forming portion are arranged from one side to the other in the third direction orthogonal to the first direction and the second direction. To the side in this order,
The first electrode forming portion has a second surface facing one side of the second direction,
The external electrode is provided on the second surface and connected to the first winding;
When viewed from the first direction, a crotch space surrounded by at least part of the first electrode forming portion, the second electrode forming portion, and the first surface is formed,
The external electrode is electrically connected to the land electrode,
The coating resin covers at least a part of the surface of the electronic component and accumulates in the crotch space.

  In the present application, the fact that the surface normal vector extends to one side (or the other side) of the specific direction means that the surface normal vector is parallel to the specific direction. That the normal vector of the surface is parallel to the specific direction includes not only the case where the surface is parallel but also the case where the surface is slightly out of parallel due to manufacturing variations. Further, the fact that the surface faces one side (or the other side) in the specific direction is not only when the normal vector of the surface is parallel to the specific direction, but also the normal vector of the surface is inclined with respect to the specific direction. Including cases.

  According to the present invention, it is possible to reduce the possibility of disconnection in the winding.

1 is an external perspective view of an electronic component 10. It is the figure which looked at the core 12 of the electronic component 10 from the lower side. It is the figure which looked at the core 12 of the electronic component 10 from the upper side. FIG. 3 is a cross-sectional structural view taken along line AA in FIG. 2. 1 is a cross-sectional structure diagram of a circuit module 100. FIG. It is sectional structure drawing of the core of the electronic component which concerns on a modification. It is sectional structure drawing of the core of the electronic component which concerns on a comparative example. It is the figure which looked at crotch space Sp1a which is a 1st reference example from the front side. It is the figure which looked at crotch space Sp1b which is a 2nd reference example from the front side. It is a figure which shows the dimension of each part of a 1st sample thru | or a 3rd sample. It is the figure which looked at the core 12a from the lower side. It is the figure which looked at the core 12a from the upper side. 2 is a perspective view of a common mode choke coil 500 described in Patent Document 1. FIG. It is the figure which showed resin and the coil | winding 531a in a low temperature state. It is the figure which showed resin and the coil | winding 531a in a high temperature state.

(Embodiment)
Hereinafter, an electronic component and a circuit module according to an embodiment will be described with reference to the drawings. FIG. 1 is an external perspective view of the electronic component 10. FIG. 2 is a view of the core 12 of the electronic component 10 as viewed from below. FIG. 3 is a view of the core 12 of the electronic component 10 as viewed from above. FIG. 4 is a cross-sectional structural view taken along line AA in FIG. In FIG. 4, the section I <b> 1 from the time when the winding 16 a leaves the core portion 22 until it reaches the external electrode 14 a is illustrated, and the other winding 16 a is omitted.

  Hereinafter, the direction in which the core portion 22 of the core 12 of the electronic component 10 extends is defined as the front-rear direction (an example of the first direction, the rear side is an example of one side, and the front side is an example of the other side). The direction in which the external electrode 14a and the external electrode 14b are arranged is defined as the left-right direction (an example of the third direction, the right side is an example of one side, and the left side is an example of the other side). The front-rear direction and the left-right direction are orthogonal to each other. Further, a direction orthogonal to the front-rear direction and the left-right direction is defined as a vertical direction (an example of the second direction, the upper side is an example of one side, and the lower side is an example of the other side). Here, the front-rear direction, the left-right direction, and the up-down direction are directions defined for the description of the electronic component 10 and do not have to coincide with the front-rear direction, the left-right direction, and the up-down direction when the electronic component 10 is used. .

  As shown in FIG. 1, the electronic component 10 includes a core 12, external electrodes 14 a to 14 d, windings 16 a and 16 b, and a top plate 18. The core 12 is made of a magnetic material, for example, Ni-Zn ferrite. However, the material of the core 12 is not limited to Ni—Zn ferrite, but may be other materials. As shown in FIGS. 1 to 3, the core 12 includes a core portion 22 and flange portions 24a and 24b.

  As shown in FIG. 2, the core portion 22 has a quadrangular prism shape extending in the front-rear direction. In this embodiment, the core part 22 has an upper surface, a lower surface, a right surface, and a left surface. The upper surface has a normal vector extending upward. The lower surface has a normal vector extending downward. The right surface has a normal vector extending to the right side. The left surface has a normal vector extending to the left side. However, the core part 22 is not limited to a rectangular column shape, and may have another shape such as a columnar shape.

  The flange portion 24 a is provided at the rear end of the core portion 22 and projects from the core portion 22 to the upper side, the lower side, the right side, and the left side. The flange portion 24a is a plate-like member having a main surface that is rectangular when viewed from the front side. When the flange portion 24a is viewed from the front side, the upper and lower long sides of the flange portion 24a are parallel to the horizontal direction, and the right and left short sides of the flange portion 24a are parallel to the vertical direction.

  Here, the boundary between the core portion 22 and the flange portion 24a will be described. As shown in FIG. 2, the core portion 22 is a portion around which windings 16a and 16b described later are wound. In the present embodiment, the core portion 22 is a portion where the cross-sectional shape perpendicular to the front-rear direction is substantially uniform. Therefore, the winding portions 16a and 16b are not wound around the portion extending in the vertical and horizontal directions in the transition portion from the core portion 22 to the flange portion 24a, and the cross-sectional shape is not substantially uniform. It is understood that it is not a part of the core part 22 but a part of the flange part 24b.

  The flange 24a includes a flange main body 26a and electrode forming portions 28a and 28b. The collar part main body 26a is a part excluding electrode forming parts 28a and 28b described later in the collar part 24a. The collar body 26a has surfaces S1 and S3. The surface S1 (an example of the first surface) is an upper surface of the collar body 26a and faces upward. Furthermore, the surface S <b> 1 is positioned above the core portion 22. In the present embodiment, the surface S1 has a normal vector extending upward. Further, when viewed from above, the surface S1 includes a portion extending in the front-rear direction between electrode forming portions 28a and 28b, which will be described later, and a portion extending in the left-right direction on the front side of the electrode forming portions 28a and 28b. , T-shaped. Note that the normal vector of the surface S1 may extend obliquely upward (for example, the front upper side or the front rear side).

  The surface S3 (an example of the third surface) faces the front side and is positioned between the surface S1 and the core part 22 in the up-down direction. In the present embodiment, the surface S3 has a normal vector extending to the front upper side. Further, the surface S3 is a part of the front surface of the collar body 26a, and more precisely, is a rectangular surface that connects the upper surface of the core portion 22 and the surface S1. Therefore, the lower long side of the surface S <b> 1 is in contact with the core portion 22. Further, the upper long side of the surface S1 is in contact with the surface S1. The surface S3 may have a normal vector extending to the front side.

  The electrode forming portions 28a and 28b are portions that protrude from the flange main body 26a toward the upper side of the surface S1. Therefore, the electrode forming portions 28a and 28b are portions positioned on the upper side of the surface S1 in the flange portion 24a. In FIG. 4, the electrode forming portions 28a and 28b are portions located above the dotted line in the flange portion 24a. The electrode forming portion 28a, part of the surface S1, and the electrode forming portion 28b are arranged in this order from the right side to the left side. Below, the shape of the electrode formation part 28a, 28b is demonstrated in detail.

  The electrode forming portion 28a (an example of a first electrode forming portion) has a surface S2a (an example of a second surface) facing upward. In the present embodiment, the surface S2a has a normal vector extending upward. Further, the surface S2a is L-shaped when viewed from above. More specifically, as shown in FIG. 3, the surface S2a has a main portion 30a and a protruding portion 32a. The main portion 30a has a rectangular shape having long sides extending in the left-right direction. The protrusion 32a protrudes from the right end of the main portion 30a toward the front side. In addition, the main part 30a should just have comprised the shape extended in the left-right direction, and shapes other than rectangular shape may be sufficient as it. Moreover, the protrusion part 32a should just protrude toward the front side from the position of the right side rather than the left end of the main part 30a. Therefore, the protrusion 32a may protrude toward the front side from a position other than the right end of the main portion 30a.

  The electrode forming portion 28a has a surface S4 (an example of a fourth surface) facing the left side. In the present embodiment, the surface S4 has a normal vector extending to the upper left side. The surface S4 is the left surface of the electrode forming portion 28a, and is a rectangular surface that connects the surface S1 and the surface S2a. In the present embodiment, the surface S4 (an example of the fourth surface) is inclined with respect to the surface S2a (an example of the second surface), but the surface S4 has a normal vector extending to the left side, That is, it may be a surface perpendicular to the surface S2a.

  The electrode forming portion 28b (an example of the second electrode forming portion) has a surface S2b facing upward. In the present embodiment, the surface S2b has a normal vector extending upward. Further, the surface S2b is L-shaped when viewed from above. More specifically, the surface S2b has a main portion 30b and a protruding portion 32b as shown in FIG. The main part 30b has a rectangular shape with long sides extending in the left-right direction. The protrusion 32b protrudes from the left end of the main portion 30b toward the front side. In addition, the main part 30b should just have comprised the shape extended in the left-right direction, and may be shapes other than rectangular shape. Moreover, the protrusion part 32b should just protrude toward the front side from the position of the left side rather than the right end of the main part 30b. Therefore, the protrusion 32a may protrude toward the front side from a position other than the left end of the main portion 30b.

  The electrode forming portion 28b has a surface S5 (an example of a fifth surface) facing the right side. In the present embodiment, the surface S5 has a normal vector extending to the upper right side. The surface S5 is the right surface of the electrode forming portion 28b, and is a rectangular surface that connects the surface S1 and the surface S2b. In the present embodiment, the surface S5 (an example of the fifth surface) is inclined with respect to the surface S2b (an example of the second surface), but the surface S5 has a normal vector extending to the right side, That is, it may be a surface perpendicular to the surface S2b.

  In the above-described collar portion 24a, as shown in FIG. 4, a crotch space Sp1 is formed. The crotch portion space Sp1 is a space surrounded by the electrode forming portion 28a, the electrode forming portion 28b, and the surface S1 when viewed from the front side. In the present embodiment, the crotch space Sp1 is a trapezoidal space surrounded by the surface S1, the surface S4, and the surface S5 when viewed from the front side. However, the crotch space Sp1 is open on the upper side, the front side, and the rear side. Therefore, the front surface of the crotch space Sp1 is a plane that connects the front side of the surface S4 and the front side of the surface S5. The rear surface of the crotch part space Sp1 is a plane that connects the rear side of the surface S4 and the rear side of the surface S5. The upper surface of the crotch space Sp1 is a plane that connects the upper side of the surface S4 and the upper side of the surface S5.

  The external electrode 14a is provided on the surface S2a. More specifically, the external electrode 14a is provided across the main portion 30a and the protruding portion 32a of the surface S2a by covering the entire surface S2a.

  The external electrode 14b is provided on the surface S2b. More specifically, the external electrode 14b is provided across the main portion 30b and the protrusion 32b of the surface S2b by covering the entire surface S2b. The external electrodes 14a and 14b as described above are manufactured by performing Ni plating and Sn plating on a base electrode made of Ag. However, the material of the external electrodes 14a and 14b is not limited to this.

  The flange portion 24b is provided at the front end of the core portion 22, and projects from the core portion 22 to the upper side, the lower side, the right side, and the left side. However, the structure of the flange part 24b is such that, when viewed from above, the axis Ax (see FIG. 2) passing through the center of the winding core part 22 (intersection of diagonal lines) and extending in the vertical direction of the flange part 24a. It is rotationally symmetric with the structure. Therefore, description of the details of the structure of the flange 24b is omitted.

  The external electrodes 14c and 14d are provided on the surfaces S2c and S2d, respectively. However, the structures of the external electrodes 14c and 14d are rotationally symmetric with respect to the structure of the external electrodes 14a and 14b with respect to the axis Ax (see FIG. 2). Therefore, the detailed description of the structure of the external electrodes 14c and 14d is omitted.

  The windings 16a and 16b are wound around the core portion 22 as shown in FIG. More specifically, the windings 16a and 16b (an example of the first winding and the second winding) are wound in a string winding shape that advances from the front side to the rear side while rotating clockwise when viewed from the front side. I am doing. The windings 16 a and 16 b are running in parallel so as to be lined up and down in the core portion 22. Therefore, when proceeding from the front side to the rear side on the surface of the core part 22, the windings 16a and the windings 16b are alternately arranged. However, the winding 16b may be wound around the winding 16a after the winding 16a is wound around the winding core 22, or the winding 16b may be wound after the winding 16b is wound around the winding core 22. The wire 16a may be wound on the winding 16b. Thereby, the coil comprised by the coil | winding 16a and the coil comprised by the coil | winding 16b comprise the common mode choke coil by mutually magnetically coupling. However, these coils may constitute a transformer. The windings 16a and 16b have a structure in which a metal wire such as Cu is covered with an insulating resin such as enamel. The diameters of the windings 16a and 16b are, for example, 0.05 mm.

  Further, the rear end t1 (an example of the end) of the winding 16a is connected to the external electrode 14a. A front end t2 of the winding 16a is connected to the external electrode 14d. The rear end t3 of the winding 16b is connected to the external electrode 14b. A front end t4 of the winding 16b is connected to the external electrode 14c. The rear ends t1, t3 and the front ends t2, t4 are respectively connected to the external electrodes 14a, 14b, 14d, 14c by thermocompression bonding. More specifically, the rear ends t1, t3 and the front ends t2, t4 are pressed against the external electrodes 14a, 14b, 14d, and 14c, respectively, by a heating tool. Thereby, the coating of the rear ends t1, t3 and the front ends t2, t4 is melted to expose the metal wire, and the metal wire and the external electrodes 14a to 14d are metal-bonded.

  By the way, in the electronic component 10, in order to reduce the possibility of disconnection in the winding 16a, the positional relationship between the winding 16a and the crotch space Sp1 is devised. Hereinafter, the positional relationship between the winding 16a and the crotch space Sp1 will be described in more detail with reference to FIGS. A section from the separation of the core portion 22 in the winding 16a to reaching the external electrode 14b is defined as a section I1 (an example of a predetermined section).

  The width of the winding core part 22 in the left-right direction is larger than the width of the crotch part space Sp1 in the left-right direction. Further, the winding 16a is separated from the core portion 22 at the upper left corner of the core portion 22 in the cross section of FIG. Therefore, the position where the winding 16a leaves the core portion 22 (that is, the left end of the section I1) is located on the left side of the crotch space Sp1. The external electrode 14a is located on the right side of the crotch space Sp1. Therefore, the position of the winding 16a that reaches the external electrode 14a (that is, the right end of the section I1) is located on the right side of the crotch space Sp1. Further, the right end of the section I1 is located above the left end of the section I1. Accordingly, the section I1 extends from the lower left side toward the upper right side when viewed from the front side. The section I1 has a portion that overlaps the surface S3 when viewed from the front side, and also extends from the lower left side toward the upper right side on the surface S3.

  However, in the electronic component 10, as shown in FIG. 4, the section I1 does not overlap the crotch space Sp1 when viewed from the front side. Specifically, when viewed from the front side, the section I1 extends from the lower left side toward the upper right side and passes through the surface S3, and passes below the crotch space Sp1 from the left side to the right side. ing. The section I1 passes through the surface S3 when viewed from the front side, and further extends from the lower left side to the upper right side to reach the external electrode 14a. The section I1 runs on the external electrode 14a from the vicinity of the corner formed by the main portion 30a and the protruding portion 32a.

  The positional relationship between the winding 16b and the crotch space Sp2 is rotationally symmetric with respect to the positional relationship between the winding 16a and the crotch space Sp1 with respect to the axis Ax. Therefore, the detailed description of the positional relationship between the winding 16b and the crotch space Sp2 is omitted.

  The top plate 18 is a plate-like member having a rectangular shape when viewed from above. The top plate 18 is made of a magnetic material, for example, Ni—Zn ferrite. However, the material of the top plate 18 is not limited to Ni—Zn ferrite, but may be other materials. The top plate 18 is bonded to the lower surfaces of the flange portions 24a and 24b with an adhesive (for example, a thermosetting epoxy resin). Thereby, a closed magnetic path is formed by the core part 22, the flange part 24a, the top plate 18, and the flange part 24b. Note that the top plate 18 has an arbitrary configuration, and the electronic component 10 may not include the top plate 18.

  The length of the electronic component 10 configured as described above in the front-rear direction is, for example, 3.2 mm. The width of the electronic component 10 in the left-right direction is, for example, 2.5 mm. The vertical height of the electronic component 10 is, for example, 2.5 mm. However, the size of the electronic component 10 is not limited to this.

  The electronic component 10 is mounted on a circuit board. Below, the circuit module provided with the electronic component 10 and the circuit board is demonstrated, referring drawings. FIG. 5 is a cross-sectional structure diagram of the circuit module 100. However, in FIG. 5, only the coating resin 108 is shown in the cross section, and the electronic component 10 and the circuit board 102 are not cross sections but side views. The position of the cross section of the coating resin 108 is the center in the left-right direction of the electronic component 10.

  The circuit module 100 includes an electronic component 10, a circuit board 102, and a coating resin 108. The circuit board 102 includes a board body 104 and land electrodes 106a to 106d (the land electrodes 106a and 106d are not shown). The substrate body 104 is a flat multilayer substrate, for example, and has an upper surface (an example of a first main surface) and a lower surface. The land electrodes 106 a to 106 d are provided on the upper surface of the substrate body 104.

  The external electrodes 14a to 14d are electrically connected to the land electrodes 106a to 106d, respectively, by solder, conductive adhesive, or the like. Thereby, the electronic component 10 is mounted on the circuit board 102. The coating resin 108 is provided for moisture prevention and covers the entire electronic component 10. In the case shown in FIG. 5, a coating resin 108 that covers the electronic component 10 is formed by dropping a liquid resin. The material of the coating resin 108 is, for example, a polyolefin resin such as polyethylene. The coating resin 108 may cover the entire electronic component 10 or a part of the electronic component 10. Further, the coating resin 108 may be applied to the electronic component 10 by spraying other than dripping.

(effect)
According to the electronic component 10 configured as described above, it is possible to reduce the possibility that the windings 16a and 16b are disconnected. Since the principle that can reduce the possibility of disconnection in the windings 16a and 16b is the same, the winding 16a will be described as an example.

  In the electronic component 10, the section I1 does not overlap the crotch space Sp1 when viewed from the front side. As a result, the coating resin 108 accumulated in the crotch space Sp1 is less likely to contact the section I1. Therefore, even if the electronic component 10 is repeatedly exposed to a high temperature state and a low temperature state, the section I1 is less likely to be pulled backward into the crotch space Sp1 by the coating resin 108 accumulated in the crotch space Sp1. As a result, it is possible to reduce the possibility of disconnection in the winding 16a.

  By the way, in the electronic component 10, the section I1 may overlap with the crotch space Sp1 if it is small when viewed from the front side. The positional relationship between the section I1 and the crotch space Sp1 will be described below. FIG. 6 is a cross-sectional structure diagram of a core of an electronic component according to a modification. FIG. 7 is a cross-sectional structure diagram of a core of an electronic component according to a comparative example.

  As shown in FIG. 6, the section I1 may overlap the crotch space Sp1 in a part of the line width of the winding 16a when viewed from the front side. In FIG. 6, the section I1 has a portion that protrudes into the crotch space Sp1 by about half the line width of the winding 16a when viewed from the front side. In this case, the coating resin 108 accumulated in the crotch space Sp1 slightly contacts the section I1. However, since the amount of the coating resin 108 in contact with the section I1 is small, the force applied to the section I1 is also small. Therefore, the possibility that disconnection occurs in the winding 16a can be reduced.

  In addition, in the electronic component according to the modification, the section I1 has a portion that overlaps the surface S3 when viewed from the front side. Thereby, even if the section I1 is pulled backward into the crotch space Sp1 by the coating resin 108, the section I1 is caught on the surface S3. As a result, it is possible to prevent the section I1 from being bent greatly by being pulled, and to reduce the possibility that the winding 16a is broken.

  However, the section I1 must not have a portion that overlaps the crotch space Sp1 in the entire line width of the winding 16a when viewed from the front side. More specifically, in FIG. 7, the section I1 protrudes into the crotch space Sp1 over the entire line width of the winding 16a when viewed from the front side. Therefore, the section I1 has a portion overlapping the crotch space Sp1 in the entire line width of the winding 16a when viewed from the front side. In this case, a large amount of the coating resin 108 accumulated in the crotch space Sp1 contacts the section I1. Therefore, the force exerted on the section I1 by the coating resin 108 accumulated in the crotch space Sp1 is also large. Therefore, in the electronic component having the core of FIG. 7, there is a possibility that the winding 16a may be disconnected.

  In addition, in the electronic component according to the comparative example, a triangular space is formed by the section I1, the surface S1, and the surface S4 when viewed from the front side. Thereby, the coating resin 108 forms a film in the triangular space. When such an electronic component is repeatedly exposed to a low temperature state and a high temperature state, the coating resin 108 film repeatedly contracts and expands. When contracted, the section I1 is pulled downward by the film of the coating resin 108 and is bent so as to protrude downward. On the other hand, since the film of the coating resin 108 is softened during expansion, a large force is not applied to the section I1 from the film of the coating resin 108. However, while the film of the coating resin 108 expands, the section I1 maintains a bent state. Therefore, the section I1 is buried in the film of the coating resin 108 expanded in a bent state. Thereby, at the time of the next contraction, the section I1 is further pulled downward by the film of the coating resin 108 and further bent so as to protrude downward. When such expansion and contraction of the film of the coating resin 108 is repeated, the bending of the section I1 gradually increases, and finally the wire breaks in the winding 16a. For the above reasons, like the electronic component 10 and the electronic component according to the modification, the section I1 has a portion that overlaps the crotch space Sp1 in the entire line width of the winding 16a when viewed from the front side. It is required not to.

  In addition, according to the electronic component 10, the possibility of disconnection in the windings 16a and 16b can be reduced for the following reason. Since the principle that can reduce the possibility of disconnection in the windings 16a and 16b is the same, the winding 16a will be described as an example.

  In the electronic component 10, the section I1 extends toward the rear upper side. Therefore, if the surface S3 has a normal vector extending to the front upper side, the section I1 and the surface S3 are easily in line contact. Therefore, even if the section I1 is pulled backward by the coating resin 108, the section I1 is caught by the surface S3. At this time, since the section I1 and the surface S3 are in line contact, the force applied from the surface S3 is distributed over a wide range of the section I1. As a result, it is possible to reduce the possibility of disconnection in the winding 16a.

  Further, according to the electronic component 10, it is possible to achieve both a reduction in the possibility of disconnection in the winding 16a and a reduction in the possibility of a short circuit between the external electrode 14a and the external electrode 14b. FIG. 8 is a view of the crotch space Sp1a as the first reference example viewed from the front side. FIG. 9 is a view of the crotch space Sp1b as the second reference example viewed from the front side. 8 and 9, the crotch space Sp1 is displayed so as to overlap the crotch space Sp1a and Sp1b. 8 and 9, the crotch space Sp1 is indicated by a dotted line. The crotch space Sp1a, which is the first reference example, and the crotch space Sp1b, which is the second reference example, are both examples used for explaining the effects and are examples of the present invention.

  More specifically, the crotch space Sp1a shown in FIG. 8 has a rectangular shape when viewed from the front side. The width in the left-right direction of the crotch space Sp1a is equal to the width in the left-right direction of the upper surface of the crotch space Sp1. Thereby, the space | interval of the external electrode 14a and the external electrode 14b becomes large, and possibility that a short circuit will generate | occur | produce between the external electrode 14a and the external electrode 14b can be reduced.

  However, the area of the crotch space Sp1a is larger than the area of the crotch space Sp1. Therefore, the amount of resin that accumulates in the crotch space Sp1a is greater than the amount of resin that accumulates in the crotch space Sp1. Thereby, the possibility that the resin accumulated in the crotch space Sp1a contacts the section I1 is higher than the possibility that the resin collected in the crotch space Sp1 contacts the section I1. Accordingly, the electronic component to which the crotch space Sp1a is applied is more likely to be disconnected from the winding 16a than the electronic component 10 to which the crotch space Sp1 is applied.

  On the other hand, the crotch space Sp1b shown in FIG. 9 has a rectangular shape when viewed from the front side. The width in the left-right direction of the crotch space Sp1b is equal to the width in the left-right direction of the lower surface (surface S1) of the crotch space Sp1. Thereby, the area of the crotch space Sp1b is reduced, and the possibility of occurrence of disconnection in the winding 16a can be reduced.

  However, the distance between the external electrode 14a and the external electrode 14b is smaller in the electronic component to which the crotch space Sp1b is applied than in the electronic component 10 to which the crotch space Sp1 is applied. For this reason, the electronic component to which the crotch space Sp1b is applied is more likely to cause a short circuit between the external electrode 14a and the external electrode 14b than the electronic component 10 to which the crotch space Sp1 is applied. .

  As described above, in the crotch portion spaces Sp1a and Sp1b having a rectangular shape when viewed from the front side, the possibility of disconnection in the winding 16a is reduced, and a short circuit is generated between the external electrode 14a and the external electrode 14b. It has been difficult to achieve both reduction of the possibility of occurrence.

  Therefore, in the electronic component 10, the surface S4 has a normal vector extending to the upper left side. Further, the surface S5 has a normal vector extending to the upper right side. Thereby, the area of the crotch space Sp1 can be reduced while increasing the interval between the external electrode 14a and the external electrode 14b. As a result, in the electronic component 10, it is possible to achieve both a reduction in the possibility of disconnection in the winding 16a and a reduction in the possibility of a short circuit between the external electrode 14a and the external electrode 14b. For the same reason, in the electronic component 10, it is possible to achieve both a reduction in the possibility of disconnection in the winding 16b and a reduction in the possibility of a short circuit between the external electrode 14c and the external electrode 14d.

  The surface S4 may have a normal vector extending to the upper left side, and the surface S5 may have a normal vector extending to the right side. Further, the surface S4 may have a normal vector extending to the left side, and the surface S5 may have a normal vector extending to the upper right side. Further, when the reduction in the possibility of occurrence of disconnection in the winding 16a and the reduction in the possibility of occurrence of a short circuit between the external electrode 14a and the external electrode 14b are not emphasized, when viewed from the front side The crotch space Sp1a, Sp1b having a rectangular shape may be applied to the electronic component.

  In addition, according to the electronic component 10, the possibility of disconnection in the windings 16a and 16b can be reduced for the following reason. Since the principle that can reduce the possibility of disconnection in the windings 16a and 16b is the same, the winding 16a will be described as an example. In the electronic component 10, the winding 16a in the section I1 extends linearly from the lower left side to the upper right side along the surface S3. The flange portion 24a is connected to the winding core portion 22 and includes a surface S3 that is inclined with respect to the winding core portion 22, so that the section I1 of the winding 16a can be moved along the flange section 24a without bending the winding 16a of the section I1. Therefore, the possibility of disconnection in the winding 16a during manufacturing can be reduced.

  Further, according to the electronic component 10, the rear end t1 of the winding 16a and the external electrode 14a can be easily connected. More specifically, when the surface S2a is not L-shaped but rectangular, the winding 16a passes over the long side on the front side of the external electrode 14a and rides on the external electrode 14a. Therefore, the rear end t1 of the winding 16a is located in the vicinity of the long side on the front side of the external electrode 14a. In this case, when the rear end t1 is pressure-bonded, the rear end t1 may drop off to the front side of the external electrode 14a.

  On the other hand, the surface S2a is L-shaped when viewed from above. More specifically, the surface S2a is L-shaped and has a main portion 30a and a protrusion 32a. The main portion 30a has a rectangular shape having long sides extending in the left-right direction. The protrusion 32a protrudes from the right end of the main portion 30a toward the front side. The external electrode 14a is provided across the main portion 30a and the protruding portion 32a. Thus, when the winding 16a passes over the long side on the front side of the main portion 30a and rides on the external electrode 14a, the protrusion 32a is positioned on the front side of the rear end t1 of the winding 16a. As a result, when the rear end t1 is pressure-bonded, the rear end t1 is suppressed from dropping off to the front side of the external electrode 14a. Therefore, the rear end t1 of the winding 16a and the external electrode 14a can be easily connected. For the same reason, the front end t4 of the winding 16b and the external electrode 14c can be easily connected.

  The inventor of the present application conducted an experiment described below in order to confirm that the possibility of disconnection of the winding 16a in the electronic component 10 can be reduced. Specifically, the inventor of the present application created a first sample to a third sample. Hereinafter, the first to third samples will be described with reference to the drawings. FIG. 10 is a diagram showing dimensions of each part of the first sample to the third sample. FIG. 10 is the same cross-sectional structure diagram as the cross-sectional structure diagram of FIG. LA and LD indicate the width of the flange 24a in the left-right direction. LB and LC indicate the distance from the upper surface of the core part 22 to the upper end of the flange part 24a. La indicates the width of the winding core portion 22 in the left-right direction. Lb indicates the height in the vertical direction of the surface S3. Lc indicates the height in the vertical direction of the electrode forming portions 28a and 28b. Ld indicates the width in the left-right direction of the surface S1.

  The inventor of the present application changed La / LA, Lb / LB, Lc / LC, and Ld / LD as shown in Table 1 below.

  According to Table 1, it can be seen that Lb / LB of the second sample and the third sample is smaller than Lb / LB of the first sample. This means that the vertical height of the surface S3 is low in the second sample, and the surface S3 does not exist in the third sample. Therefore, in the second sample and the third sample, the section I1 has a portion that overlaps the crotch space Sp1 in the entire line width of the winding 16a when viewed from the front side. That is, the second sample and the third sample are electronic components according to the comparative example. On the other hand, in the first sample, the section I1 does not overlap with the crotch space Sp1 when viewed from the front side. That is, the first sample is the electronic component according to the example. If the inventor of the present application designs the core 12 so that La / LA, Lb / LB, Lc / LC and Ld / LD are within the following ranges, the section I1 overlaps the crotch space Sp1 when viewed from the front side. I found it difficult.

0.47 ≦ La / LA ≦ 0.57
0.45 ≦ Lb / LB ≦ 0.76
0.23 ≦ Lc / LC ≦ 0.45
0.04 ≦ Ld / LD ≦ 0.12

  Thirty of the first to third samples as described above were mounted on a circuit board and coated with a coating resin to produce a circuit module. Then, the first step of exposing each circuit module to a low temperature state of −40 ° C. for 60 minutes and the second step of exposing each circuit module to a low temperature state of 90 ° C. for 40 minutes were alternately performed. Performing each of the first step and the second step once is called one cycle. In the third sample, disconnection occurred in two of the 30 samples at 150 cycles. Furthermore, in the third sample, disconnection occurred in 4 of the remaining 28 samples at the time of 500 cycles. Similarly, disconnection also occurred in the second sample.

  On the other hand, in the first sample, no disconnection occurred in any sample even at the time of 2000 cycles. From the above experiment, it can be seen that the possibility of disconnection in the winding 16a can be reduced because the section I1 does not overlap with the crotch space Sp1 when viewed from the front side.

(First modification)
Hereinafter, the core 12a according to the first modification will be described with reference to the drawings. FIG. 11 is a view of the core 12a as viewed from below. FIG. 12 is a view of the core 12a as viewed from above.

  The core 12a is different from the core 12 in the structure of the flange portions 24a and 24b. The core 12a will be described focusing on the differences related to the following.

  The flange portion 24a protrudes downward from the core portion 22, and has a surface S6 (an example of a sixth surface), S7, S8, and S9. The surface S6 is a surface that is located below the core portion 22 and faces the front side. Both ends in the left-right direction of the surface S6 substantially coincide with both ends in the left-right direction of the core part 22 when viewed from above. And when it sees from the lower side, surface S6 is inclined with respect to the surface orthogonal to the front-back direction so that it may go back as it goes to the left side.

  The surface S7 is a surface adjacent to the right side of the surface S6, and has a normal vector extending to the front side. The surface S8 is a surface adjacent to the left side of the surface S6 and has a normal vector extending to the front side. That is, the surfaces S7 and S8 are parallel to the surface orthogonal to the front-rear direction. The surface S9 is a rear surface of the flange portion 24a and has a normal vector extending rearward.

  In the collar part 24a as described above, as shown in FIG. 11, the distance between the surface S7 and the surface S9 is larger than the distance between the surface S8 and the surface S9. As shown in FIG. 12, the length in the front-rear direction of the protrusion 32a is longer than the length in the front-rear direction of the protrusion 32b.

  The flange portion 24b protrudes downward from the core portion 22 and has surfaces S16, S17, S18, and S19. The surface S <b> 16 is a surface that is located below the winding core portion 22 and faces the rear side. Both ends in the left-right direction of the surface S16 substantially coincide with both ends in the left-right direction of the core part 22 when viewed from above. The surface S16 is inclined with respect to a surface orthogonal to the front-rear direction so that the surface S16 proceeds to the rear side as it proceeds to the left side when viewed from below.

  The surface S17 is a surface adjacent to the right side of the surface S16 and has a normal vector extending to the rear side. The surface S18 is a surface adjacent to the left side of the surface S16, and has a normal vector extending to the rear side. That is, the surfaces S17 and S18 are parallel to the surface orthogonal to the front-rear direction. The surface S19 is a front surface of the flange portion 24b and has a normal vector extending to the front side.

  In the collar part 24b as described above, as shown in FIG. 11, the distance between the surface S18 and the surface S19 is larger than the distance between the surface S17 and the surface S19. And as shown in FIG. 12, the length of the protrusion part 32c in the front-back direction becomes longer than the length of the protrusion part 32d in the front-rear direction.

  Windings 16 a and 16 b are wound around the core 12 a as described above in the same manner as the core 12. That is, the windings 16a and 16b are wound around the core portion 22 of the core 12a so that when viewed from the front side, the windings 16a and 16b travel from the front side to the rear side while rotating clockwise. In this case, a portion of the winding 16 a that is wound most rearward in the core portion 22 extends from the front right side toward the rear left side on the lower surface of the core portion 22. That is, the winding 16a comes along the surface S6. As a result, the length of contact of the winding 16a with the core 12 is increased, and the inductance value of the coil constituted by the winding 16a is increased. For the same reason, the inductance value of the coil constituted by the winding 16b increases.

  Further, according to the electronic component including the core 12a, the connection reliability between the rear end t1 of the winding 16a and the external electrode 14a can be improved. More specifically, the surface S2a has a main portion 30a and a protruding portion 32a, and is L-shaped when viewed from above. The main portion 30a has a rectangular shape having long sides extending in the left-right direction. The protrusion 32a protrudes from the right end of the main portion 30a toward the front side. The external electrode 14a is provided across the main portion 30a and the protruding portion 32a. Thus, when the winding 16a passes over the long side on the front side of the main portion 30a and rides on the external electrode 14a, the protrusion 32a is positioned on the front side of the rear end t1 of the winding 16a. In particular, the length of the protrusion 32a of the core 12a in the front-rear direction is longer than the length of the protrusion 32a of the core 12 in the front-rear direction. Therefore, the core 12a is further suppressed from falling off the rear end t1 to the front side of the external electrode 14a when the rear end t1 is crimped than the core 12. Therefore, the connection reliability between the rear end t1 of the winding 16a and the external electrode 14a is improved. For the same reason, the connection reliability between the front end t4 of the winding 16b and the external electrode 14c is further improved.

(Other embodiments)
The electronic component and the circuit module according to the present invention are not limited to the electronic component and the circuit module 100 including the electronic component 10 and the core 12a, but can be changed within the scope of the gist thereof.

  Moreover, you may combine arbitrarily the structure of the electronic component 10 and the electronic component provided with the core 12a, and the circuit module 100. FIG.

  The front surfaces of the electrode forming portions 28a and 28b may be directly connected to the surface S3. More specifically, as shown in FIG. 1, the front surfaces of the electrode forming portions 28a and 28b are located behind the surface S3. Therefore, the surface S1 exists on the front side of the electrode forming portions 28a and 28b. However, the front surfaces of the electrode forming portions 28a and 28b may be directly connected to the surface S3. In this case, the surface S1 does not exist on the front side of the electrode forming portions 28a and 28b. Therefore, the surface S1 is positioned between the electrode forming portion 28a and the electrode forming portion 28b as a whole.

  As described above, the present invention is useful for electronic parts and circuit modules, and is particularly excellent in that the possibility of occurrence of disconnection in a winding can be reduced.

10: Electronic parts 12, 12a: Core 13: Grooves 14a to 14d: External electrodes 16a, 16b: Winding 18: Top plate 22: Core part 24a, 24b: Gutter part 26a: Gutter body 28a, 28b: Electrode formation Portions 30a and 30b: Main portions 32a to 32d: Protrusion portion 100: Circuit module 102: Circuit board 104: Board body 106a to 106d: Land electrode 108: Coating resin I1: Sections S1, S2a, S2b, S2c, S2d, S3 S9, S16 to S19: plane Sp1, Sp1a, Sp1b, Sp2: crotch space

Claims (5)

A winding core portion extending in the first direction and an end portion on one side of the winding core portion in the first direction and facing one side of the second direction orthogonal to the first direction. And a core that includes a flange protruding from the core portion,
A first winding and a second winding wound around the winding core;
An external electrode;
With
The buttocks
A collar body having a first surface facing one side in the second direction and located on one side in the second direction with respect to the core portion,
A first electrode forming portion and a second electrode forming portion protruding from the flange main body toward the one side in the second direction from the first surface;
Contains
The first electrode forming portion, at least a part of the first surface, and the second electrode forming portion are arranged from one side to the other in the third direction orthogonal to the first direction and the second direction. To the side in this order,
The first electrode forming portion has a second surface facing one side of the second direction,
The external electrode is provided on the second surface and connected to the first winding;
When viewed from the first direction, a crotch space surrounded by at least part of the first electrode forming portion, the second electrode forming portion, and the first surface is formed,
Defining a section from leaving the core portion in the first winding to reaching the external electrode as a predetermined section;
An end portion on one side in the third direction of the predetermined section is located on one side in the third direction with respect to the crotch space,
An end portion on the other side in the third direction of the predetermined section is located on the other side in the third direction with respect to the crotch space,
The predetermined section extends toward one side of the second direction and one side of the third direction when viewed from the first direction;
The collar body has a third surface that faces the other side of the first direction and is positioned between the first surface and the core portion in the second direction. ,
The predetermined section has a portion that overlaps the third surface when viewed from the first direction;
The third surface has a normal vector extending to the other side of the first direction and one side of the second direction.
Electronic components. A winding core portion extending in the first direction and an end portion on one side of the winding core portion in the first direction and facing one side of the second direction orthogonal to the first direction. And a core that includes a flange protruding from the core portion,
A first winding and a second winding wound around the winding core;
An external electrode;
With
The buttocks
A collar body having a first surface facing one side in the second direction and located on one side in the second direction with respect to the core portion,
A first electrode forming portion and a second electrode forming portion protruding from the flange main body toward the one side in the second direction from the first surface;
Contains
The first electrode forming portion, at least a part of the first surface, and the second electrode forming portion are arranged from one side to the other in the third direction orthogonal to the first direction and the second direction. To the side in this order,
The first electrode forming portion has a second surface facing one side of the second direction,
The external electrode is provided on the second surface and connected to the first winding;
When viewed from the first direction, a crotch space surrounded by at least part of the first electrode forming portion, the second electrode forming portion, and the first surface is formed,
The first electrode forming portion has a fourth surface facing the other side of the third direction,
The second electrode forming portion has a fifth surface facing one side of the third direction,
The crotch space is a space surrounded by at least a part of the first surface, the fourth surface, and the fifth surface when viewed from the first direction;
The fourth surface has a normal vector extending to the other side of the third direction and to one side of the second direction, and / or the fifth surface has a third direction in the third direction. Having a normal vector extending to one side and one side of the second direction;
Electronic components. A winding core portion extending in the first direction and an end portion on one side of the winding core portion in the first direction and facing one side of the second direction orthogonal to the first direction. And a core that includes a flange protruding from the core portion,
A first winding and a second winding wound around the winding core;
An external electrode;
With
The buttocks
A collar body having a first surface facing one side in the second direction and located on one side in the second direction with respect to the core portion,
A first electrode forming portion and a second electrode forming portion protruding from the flange main body toward the one side in the second direction from the first surface;
Contains
The first electrode forming portion, at least a part of the first surface, and the second electrode forming portion are arranged from one side to the other in the third direction orthogonal to the first direction and the second direction. To the side in this order,
The first electrode forming portion has a second surface facing one side of the second direction,
The external electrode is provided on the second surface and connected to the first winding;
The second surface has a main portion and a protrusion,
The main portion extends in the third direction when viewed from the second direction;
The protrusion protrudes from a position on one side in the third direction from an end on the other side in the third direction of the main part toward the other side in the first direction,
The external electrode is provided across the main part and the protruding part,
Electronic components. A winding core portion extending in the first direction and an end portion on one side of the winding core portion in the first direction and facing one side of the second direction orthogonal to the first direction. And a core that includes a flange protruding from the core portion,
A first winding and a second winding wound around the winding core;
An external electrode;
With
The buttocks
A collar body having a first surface facing one side in the second direction and located on one side in the second direction with respect to the core portion,
A first electrode forming portion and a second electrode forming portion protruding from the flange main body toward the one side in the second direction from the first surface;
Contains
The first electrode forming portion, at least a part of the first surface, and the second electrode forming portion are arranged from one side to the other in the third direction orthogonal to the first direction and the second direction. To the side in this order,
The flange portion protrudes from the core portion toward the other side in the second direction, and has a sixth surface.
The sixth surface is located on the other side in the second direction with respect to the core portion, and faces the other side in the first direction,
When viewed from the second direction, the sixth surface is orthogonal to the first direction so as to advance to one side of the first direction as it proceeds to one side of the third direction. Tilted with respect to the surface
Electronic components. Electronic components,
A circuit board including a substrate body having a first main surface, and a land electrode provided on the first main surface;
Coating resin,
With
The electronic component is
A winding core portion extending in the first direction and an end portion on one side of the winding core portion in the first direction and facing one side of the second direction orthogonal to the first direction. And a core that includes a flange protruding from the core portion,
A first winding and a second winding wound around the winding core;
An external electrode;
With
The buttocks
A collar body having a first surface facing one side in the second direction and located on one side in the second direction with respect to the core portion,
A first electrode forming portion and a second electrode forming portion protruding from the flange main body toward the one side in the second direction from the first surface;
Contains
The first electrode forming portion, at least a part of the first surface, and the second electrode forming portion are arranged from one side to the other in the third direction orthogonal to the first direction and the second direction. To the side in this order,
The first electrode forming portion has a second surface facing one side of the second direction,
The external electrode is provided on the second surface and connected to the first winding;
When viewed from the first direction, a crotch space surrounded by at least part of the first electrode forming portion, the second electrode forming portion, and the first surface is formed,
The external electrode is electrically connected to the land electrode,
The coating resin covers at least a part of the surface of the electronic component and accumulates in the crotch space.
Circuit module.