JP2016201467A - Surface mount inductor - Google Patents

Surface mount inductor Download PDF

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JP2016201467A
JP2016201467A JP2015080684A JP2015080684A JP2016201467A JP 2016201467 A JP2016201467 A JP 2016201467A JP 2015080684 A JP2015080684 A JP 2015080684A JP 2015080684 A JP2015080684 A JP 2015080684A JP 2016201467 A JP2016201467 A JP 2016201467A
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molded body
coil
mount inductor
flush
external terminal
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昌明 戸塚
Masaaki Totsuka
昌明 戸塚
千寿 境
Senju Sakai
千寿 境
佐々森　邦夫
Kunio Sasamori
邦夫 佐々森
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Toko Inc
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Toko Inc
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Abstract

PROBLEM TO BE SOLVED: To provide a surface mount inductor capable of setting the size of a compact without taking into consideration the thickness of an external terminal and improving characteristics.SOLUTION: A surface mount inductor includes: a coil 11 formed by winding a conducting wire; and a compact 12 which is formed using a sealing material containing resin and a magnetic material and in which the coil is incorporated. The surfaces of the lead-out ends 11b of the oil are exposed and extended to the end surfaces of a compact so as to have the same plane as the respective surfaces. The upper part and the lower part of the end surface of the compact are formed to be smaller than the size in the vertical direction of the compact. Then, an external terminal is formed by coating a conductive material on the compact so that the upper and lower surfaces have the same plane as the upper and lower surfaces of the compact.SELECTED DRAWING: Figure 1

Description

本発明は、導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、コイルを内蔵する成形体を備えた表面実装インダクタに関する。   The present invention relates to a surface mount inductor including a coil formed by winding a conducting wire and a sealing material including a resin and a magnetic material, and including a molded body containing the coil.

従来の表面実装インダクタに、図７に示す様に、導線を巻回してコイル７１を形成し、このコイル７１を樹脂と磁性材料を含む封止材で形成された成形体７２内に埋設し、コイル７１の引き出し端を成形体７２の端面に引き出し、このコイル７１の引き出し端と成形体７２に形成された外部端子７３を接続したものがある（例えば、特許文献１を参照。）。   As shown in FIG. 7, a coil 71 is formed by winding a conductive wire on a conventional surface mount inductor, and the coil 71 is embedded in a molded body 72 formed of a sealing material including a resin and a magnetic material. There is one in which the leading end of the coil 71 is pulled out to the end surface of the molded body 72 and the leading end of the coil 71 is connected to the external terminal 73 formed on the molded body 72 (see, for example, Patent Document 1).

特開２０１０−２４５４７３号公報JP 2010-245473 A

この種の従来の表面実装インダクタは、ディップ方式で導電ペーストを成形体に付与することにより成形体に外部端子を形成している。そのため、成形体に導電ペーストが多めに付着して外部端子の厚みが厚くなりやすく、外部端子の厚みが厚くなることを考慮して成形体全体の大きさをその分小さくする必要があった。成形体全体を小さくした場合、インダクタンス値、直流抵抗Ｒｄｃ、定格電流Ｉｓａｔ等の特性が劣化するという問題があった。   In this type of conventional surface mount inductor, an external terminal is formed on a molded body by applying a conductive paste to the molded body by a dipping method. For this reason, it is necessary to reduce the overall size of the molded body by taking into account that a large amount of conductive paste adheres to the molded body and the thickness of the external terminal tends to increase, and the thickness of the external terminal increases. When the whole compact is made small, there is a problem that characteristics such as inductance value, DC resistance Rdc, rated current Isat, and the like deteriorate.

本発明は、外部端子の厚みを考慮することなく成形体の大きさを設定でき、特性を改善できる表面実装インダクタを提供することを目的とする。   An object of the present invention is to provide a surface mount inductor that can set the size of a molded body without considering the thickness of an external terminal and can improve the characteristics.

本発明は、導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、コイルを内蔵する成形体を備えた表面実装インダクタにおいて、コイルの引き出し端部の表面が、成形体の端面にそれぞれその表面と同一面になる様に露出、延在し、成形体の端面の上部と下部が成形体の上下方向の大きさよりも小さく形成され、その上下面が成形体の上下面と同一面となる様に成形体に導電材料を塗布して外部端子が形成される。
また、本発明は、導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、コイルを内蔵する成形体を備えた表面実装インダクタにおいて、コイルの引き出し端部の表面が、成形体の端面にそれぞれその表面と同一面になる様に露出、延在し、成形体の端面の左右が成形体の左右方向の大きさよりも小さく形成され、その左右が成形体の左右と同一面となる様に成形体に導電材料を塗布して外部端子が形成される。
さらに、本発明は、導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、コイルを内蔵する成形体を備えた表面実装インダクタにおいて、コイルの引き出し端部の表面が、成形体の端面にそれぞれその表面と同一面になる様に露出、延在し、成形体の端面の上下左右が成形体の上下左右よりも小さく形成され、その上下左右が成形体の上下左右と同一面となる様に成形体に導電材料を塗布して外部端子が形成される。 The present invention relates to a surface mount inductor formed by using a coil formed by winding a conductive wire and a sealing material containing a resin and a magnetic material, and including a molded body incorporating the coil. However, it is exposed and extended on the end surface of the molded body so as to be flush with the surface thereof, and the upper and lower portions of the end surface of the molded body are formed smaller than the vertical size of the molded body, and the upper and lower surfaces are molded. An external terminal is formed by applying a conductive material to the molded body so as to be flush with the upper and lower surfaces of the body.
The present invention also provides a coil-drawing end portion in a surface-mount inductor formed using a coil formed by winding a conductive wire and a sealing material containing a resin and a magnetic material, and including a molded body incorporating the coil. The surface of the molded body is exposed and extends so as to be flush with the surface of the molded body, and the left and right sides of the molded body are formed smaller than the size of the molded body in the left-right direction. The external terminals are formed by applying a conductive material to the molded body so as to be on the same plane as the left and right sides.
Furthermore, the present invention provides a coil-drawing end portion in a surface-mount inductor comprising a coil formed by winding a conducting wire and a sealing material including a resin and a magnetic material, and including a molded body incorporating the coil. The surface of the molded body is exposed and extended so as to be flush with the surface of the molded body, and the vertical and horizontal directions of the molded body are smaller than the vertical and horizontal directions of the molded body. An external terminal is formed by applying a conductive material to the molded body so as to be flush with the upper, lower, left, and right sides.

本発明は、導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、コイルを内蔵する成形体を備えた表面実装インダクタにおいて、コイルの引き出し端部の表面が、成形体の端面にそれぞれその表面と同一面になる様に露出、延在し、成形体の端面の上部と下部が成形体の上下方向の大きさよりも小さく形成され、その上下面が成形体の上下面と同一面となる様に成形体に導電材料を塗布して外部端子が形成されるので、外部端子の厚みを考慮することなく成形体の大きさを設定でき、特性を改善できる。
また、本発明は、導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、コイルを内蔵する成形体を備えた表面実装インダクタにおいて、コイルの引き出し端部の表面が、成形体の端面にそれぞれその表面と同一面になる様に露出、延在し、成形体の端面の左右が成形体の左右方向の大きさよりも小さく形成され、その左右が成形体の左右と同一面となる様に成形体に導電材料を塗布して外部端子が形成されるので、外部端子の厚みを考慮することなく成形体の大きさを設定でき、特性を改善できる。
さらに、本発明は、導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、コイルを内蔵する成形体を備えた表面実装インダクタにおいて、コイルの引き出し端部の表面が、成形体の端面にそれぞれその表面と同一面になる様に露出、延在し、成形体の端面の上下左右が成形体の上下左右よりも小さく形成され、その上下左右が成形体の上下左右と同一面となる様に成形体に導電材料を塗布して外部端子が形成されるので、外部端子の厚みを考慮することなく成形体の大きさを設定でき、特性を改善できる。 The present invention relates to a surface mount inductor formed by using a coil formed by winding a conductive wire and a sealing material containing a resin and a magnetic material, and including a molded body incorporating the coil. However, it is exposed and extended on the end surface of the molded body so as to be flush with the surface thereof, and the upper and lower portions of the end surface of the molded body are formed smaller than the vertical size of the molded body, and the upper and lower surfaces are molded. Since the external terminal is formed by applying a conductive material to the molded body so that it is flush with the upper and lower surfaces of the body, the size of the molded body can be set and the characteristics can be improved without considering the thickness of the external terminal .
The present invention also provides a coil-drawing end portion in a surface-mount inductor formed using a coil formed by winding a conductive wire and a sealing material containing a resin and a magnetic material, and including a molded body incorporating the coil. The surface of the molded body is exposed and extends so as to be flush with the surface of the molded body, and the left and right sides of the molded body are formed smaller than the size of the molded body in the left-right direction. Since the external terminal is formed by applying a conductive material to the molded body so as to be flush with the left and right sides of the molded body, the size of the molded body can be set without considering the thickness of the external terminal, and the characteristics can be improved.
Furthermore, the present invention provides a coil-drawing end portion in a surface-mount inductor comprising a coil formed by winding a conducting wire and a sealing material including a resin and a magnetic material, and including a molded body incorporating the coil. The surface of the molded body is exposed and extended so as to be flush with the surface of the molded body, and the vertical and horizontal directions of the molded body are smaller than the vertical and horizontal directions of the molded body. Since the external terminals are formed by applying a conductive material to the molded body so as to be on the same plane as the upper, lower, left and right sides, the size of the molded body can be set and the characteristics can be improved without considering the thickness of the external terminals.

本発明の表面実装インダクタの第１の実施例の成形体を示す斜視図である。It is a perspective view which shows the molded object of the 1st Example of the surface mount inductor of this invention. 本発明の表面実装インダクタの第１の実施例を示す斜視図である。1 is a perspective view showing a first embodiment of a surface mount inductor according to the present invention. FIG. 本発明の表面実装インダクタの第２の実施例の成形体を示す斜視図である。It is a perspective view which shows the molded object of the 2nd Example of the surface mount inductor of this invention. 本発明の表面実装インダクタの第２の実施例を示す斜視図である。It is a perspective view which shows the 2nd Example of the surface mount inductor of this invention. 本発明の表面実装インダクタの第３の実施例の成形体を示す斜視図である。It is a perspective view which shows the molded object of the 3rd Example of the surface mount inductor of this invention. 本発明の表面実装インダクタの第３の実施例を示す斜視図である。It is a perspective view which shows the 3rd Example of the surface mount inductor of this invention. 従来の表面実装インダクタの斜視図である。It is a perspective view of the conventional surface mount inductor.

本発明の表面実装インダクタは、導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、コイルを内蔵する成形体を備える。コイルは、引き出し端部の表面が成形体の端面にそれぞれその表面と同一面になる様に露出、延在する。成形体は、端面の上部と下部が成形体の上下方向の大きさよりも小さく形成されたり、端面の左右が成形体の左右方向の大きさよりも小さく形成されたり、端面の上下左右が成形体の上下左右よりも小さく形成されたりする。そして、その上下面が成形体の上下面と同一面となる様に成形体に導電材料を塗布したり、その左右が成形体の左右と同一面となる様に成形体に導電材料を塗布したり、その上下左右が成形体の上下左右と同一面となる様に成形体に導電材料を塗布したりして外部端子が形成される。
従って、本発明の表面実装インダクタは、外部端子の厚みを考慮して成形体全体の大きさを小さくする必要がなく、成形体の外部端子が形成されていない部分により必要以上に成形体が小さくなることを防止できる。 The surface-mount inductor of the present invention includes a coil formed by winding a conductive wire, and a molded body that is formed using a sealing material including a resin and a magnetic material, and that incorporates the coil. The coil is exposed and extended so that the surface of the lead-out end is flush with the surface of the end of the molded body. The molded body is formed such that the upper and lower ends of the end surface are smaller than the vertical size of the molded body, the left and right end surfaces are smaller than the horizontal size of the molded body, It is formed smaller than the top, bottom, left and right. Then, apply a conductive material to the molded body so that its upper and lower surfaces are flush with the upper and lower surfaces of the molded body, or apply a conductive material to the molded body so that its left and right sides are flush with the left and right sides of the molded body. Alternatively, the external terminals are formed by applying a conductive material to the molded body so that the upper, lower, left, and right sides thereof are flush with the upper, lower, left, and right sides of the molded body.
Therefore, the surface mount inductor of the present invention does not need to reduce the overall size of the molded body in consideration of the thickness of the external terminals, and the molded body is smaller than necessary due to the portion of the molded body where the external terminals are not formed. Can be prevented.

以下、本発明の表面実装インダクタ及びその製造方法の実施例を図１乃至図６を参照して説明する。
図１は本発明の表面実装インダクタの第１の実施例の成形体を示す斜視図、図２は本発明の表面実装インダクタの第１の実施例を示す斜視図である。
図１、図２において、１１はコイル、１２は成形体である。
コイル１１は、導線をその両端部が外周に位置するように２段の外外巻きに巻回した巻回部１１ａと、巻回部１１ａから引き出された引き出し端部１１ｂを備えた空芯コイルが形成される。導線は断面が平角状の平角線が用いられる。引き出し端部１１ｂは、導線の両端部が巻回部１１ａから巻回部を挟んで対向する様に引き出される。
成形体１２は、樹脂と磁性材料を含む封止材を用いてコイル１１を内包する様に形成される。封止材としては、磁性材料として例えば鉄系の金属磁性粉末を、樹脂として例えばエポキシ樹脂をそれぞれ用い、これらを混合したものが用いられる。この成形体１２の端面には、コイル１１の引き出し端部１１ｂの表面が成形体１２の端面と同一面となる様に露出し、成形体１２の側面方向に延在する。また、成形体１２の端面側の上下部は成形体１２の上下方向の大きさよりも小さく形成されて、成形体１２の端面側の上下部と成形体の上下面の間に凹み１２ａ、１２ｂ、１２ｃ、１２ｄが形成される。
そして、この成形体１２の端面と側面と凹み１２ａ、１２ｂ、１２ｃ、１２ｄに導電材料を塗布して外部端子１３が形成される。この時、導電材料は、その上下面が、成形体１２の端面側の上下部と成形体１２の上下面の間に形成された凹み１２ａ、１２ｂ、１２ｃ、１２ｄから突出することなく、かつ、成形体１２の上下面と同一面になる様に塗布される。外部端子１３は、成形体１２の側面から突出するものの、成形体１２の上下面と同一面に形成される。 Hereinafter, embodiments of the surface mount inductor and the manufacturing method thereof according to the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view showing a molded body of a first embodiment of a surface mount inductor according to the present invention, and FIG. 2 is a perspective view showing a first embodiment of the surface mount inductor according to the present invention.
1 and 2, 11 is a coil, and 12 is a molded body.
The coil 11 is an air-core coil including a winding part 11a in which a conductive wire is wound in two stages of outer and outer windings so that both ends thereof are positioned on the outer periphery, and a lead-out end part 11b drawn from the winding part 11a. Is formed. The conducting wire is a rectangular wire having a rectangular cross section. The lead-out end portion 11b is pulled out so that both end portions of the conducting wire face each other with the winding portion interposed therebetween from the winding portion 11a.
The molded body 12 is formed so as to enclose the coil 11 using a sealing material including a resin and a magnetic material. As the sealing material, for example, an iron-based metal magnetic powder is used as a magnetic material, and an epoxy resin is used as a resin, and a mixture thereof is used. The end surface of the molded body 12 is exposed such that the surface of the lead-out end portion 11 b of the coil 11 is flush with the end surface of the molded body 12, and extends in the side surface direction of the molded body 12. Further, the upper and lower portions on the end surface side of the molded body 12 are formed smaller than the size of the molded body 12 in the vertical direction, and the recesses 12a and 12b are formed between the upper and lower portions on the end surface side of the molded body 12 and the upper and lower surfaces of the molded body. 12c and 12d are formed.
Then, an external terminal 13 is formed by applying a conductive material to the end surface, side surface, and recesses 12a, 12b, 12c, and 12d of the molded body 12. At this time, the upper and lower surfaces of the conductive material do not protrude from the recesses 12a, 12b, 12c, and 12d formed between the upper and lower portions on the end surface side of the molded body 12 and the upper and lower surfaces of the molded body 12, and It is applied so as to be flush with the upper and lower surfaces of the molded body 12. Although the external terminal 13 protrudes from the side surface of the molded body 12, it is formed on the same surface as the upper and lower surfaces of the molded body 12.

この様に形成された本発明の表面実装インダクタは、成形体の外部端子が形成されていない部分の上下方向の大きさを、従来よりも、外部端子の厚みの２倍分大きくすることができる。例えば、外部端子の厚みが０．０４ｍｍの場合、成形体の外部端子が形成されていない部分の上下方向の大きさを従来よりも０．０８ｍｍ大きくすることができ、その分コイルを構成する導線の線幅を０．２３ｍｍから０．３１ｍｍに大きくして、直流抵抗Ｒｄｃを２５％改善することができる。   In the surface mount inductor of the present invention formed in this way, the size in the vertical direction of the portion where the external terminal of the molded body is not formed can be increased by twice the thickness of the external terminal as compared with the conventional case. . For example, when the thickness of the external terminal is 0.04 mm, the size in the vertical direction of the portion of the molded body where the external terminal is not formed can be increased by 0.08 mm compared to the conventional case. Can be increased from 0.23 mm to 0.31 mm to improve the DC resistance Rdc by 25%.

図３は本発明の表面実装インダクタの第２の実施例の成形体を示す斜視図、図４は本発明の表面実装インダクタの第２の実施例を示す斜視図である。
コイル３１は、導線をその両端部が外周に位置するように２段の外外巻きに巻回した巻回部３１ａと、巻回部３１ａから引き出された引き出し端部３１ｂを備えた空芯コイルが形成される。
成形体３２は、樹脂と磁性材料を含む封止材を用いてコイル３１を内包する様に形成される。封止材としては、磁性材料として例えば鉄系の金属磁性粉末を、樹脂として例えばエポキシ樹脂をそれぞれ用い、これらを混合したものが用いられる。この成形体３２の端面には、コイル３１の引き出し端部３１ｂの表面が成形体３２の端面と同一面となる様に露出し、成形体３２の側面方向に延在する。また、成形体３２の端面側の左右は成形体３２の左右方向の大きさよりも小さく形成されて、成形体３２の端面側の左右と成形体の左右の間に凹み３２ａ、３２ｂ、３２ｃ、３２ｄが形成される。
そして、この成形体３２の端面と上下面と凹み３２ａ、３２ｂ、３２ｃ、３２ｄに導電材料を塗布して外部端子３３が形成される。この時、導電材料は、その左右が、成形体３２の端面側の左右と成形体３２の左右の間に形成された凹み３２ａ、３２ｂ、３２ｃ、３２ｄから突出することなく、かつ、成形体の左右と同一面になる様に塗布される。外部端子３３は、成形体３２の上下面から突出するものの、成形体３２の左右と同一面に形成される。 FIG. 3 is a perspective view showing a molded body of a second embodiment of the surface mount inductor of the present invention, and FIG. 4 is a perspective view showing a second embodiment of the surface mount inductor of the present invention.
The coil 31 is an air-core coil provided with a winding portion 31a in which a conducting wire is wound in two stages of outer and outer windings so that both ends thereof are positioned on the outer periphery, and a drawn end portion 31b drawn from the winding portion 31a. Is formed.
The molded body 32 is formed so as to enclose the coil 31 using a sealing material including a resin and a magnetic material. As the sealing material, for example, an iron-based metal magnetic powder is used as a magnetic material, and an epoxy resin is used as a resin, and a mixture thereof is used. The end surface of the molded body 32 is exposed such that the surface of the lead-out end portion 31 b of the coil 31 is flush with the end surface of the molded body 32, and extends in the side surface direction of the molded body 32. Further, the left and right sides of the end surface side of the molded body 32 are formed smaller than the size in the left-right direction of the molded body 32, and the recesses 32a, 32b, 32c, 32d are formed between the left and right sides of the end surface side of the molded body 32 and the left and right sides of the molded body. Is formed.
And the external terminal 33 is formed by apply | coating a conductive material to the end surface of this molded object 32, an up-and-down surface, and the dents 32a, 32b, 32c, 32d. At this time, the conductive material does not protrude from the recesses 32a, 32b, 32c, and 32d formed between the left and right of the end surface side of the molded body 32 and the left and right of the molded body 32. It is applied so that it is flush with the left and right sides. The external terminals 33 protrude from the upper and lower surfaces of the molded body 32, but are formed on the same plane as the left and right sides of the molded body 32.

図５は本発明の表面実装インダクタの第３の実施例の成形体を示す斜視図、図６は本発明の表面実装インダクタの第３の実施例を示す斜視図である。
コイル５１は、導線をその両端部が外周に位置するように２段の外外巻きに巻回した巻回部５１ａと、巻回部５１ａから引き出された引き出し端部５１ｂを備えた空芯コイルが形成される。
成形体５２は、樹脂と磁性材料を含む封止材を用いてコイル５１を内包する様に形成される。封止材としては、磁性材料として例えば鉄系の金属磁性粉末を、樹脂として例えばエポキシ樹脂をそれぞれ用い、これらを混合したものが用いられる。この成形体５２の端面には、コイル５１の引き出し端部５１ｂの表面が成形体５２の端面と同一面となる様に露出し、成形体５２の側面方向に延在する。また、成形体５２の端面側の上下左右は成形体５２の上下左右よりも小さく形成されて、成形体５２の端面側の上下左右と成形体の上下左右の間に凹み５２ａ、５２ｂ、５２ｃ、５２ｄ、５２ｅ、５２ｆ、５２ｇ、５２ｈが形成される。
そして、この成形体５２の端面と凹み５２ａ、５２ｂ、５２ｃ、５２ｄ、５２ｅ、５２ｆ、５２ｇ、５２ｈに導電材料を塗布して外部端子５３が形成される。この時、導電材料は、凹み５２ａ、５２ｂ、５２ｃ、５２ｄ、５２ｅ、５２ｆ、５２ｇ、５２ｈから突出することなく、かつ、成形体の上下左右と同一面になる様に塗布される。外部端子５３は、成形体５２の上下左右と同一面に形成される。 FIG. 5 is a perspective view showing a molded product of a third embodiment of the surface mount inductor of the present invention, and FIG. 6 is a perspective view showing a third embodiment of the surface mount inductor of the present invention.
The coil 51 is an air-core coil provided with a winding part 51a in which a conductive wire is wound in two stages of outer and outer windings so that both ends thereof are located on the outer periphery, and a lead-out end part 51b drawn out from the winding part 51a. Is formed.
The molded body 52 is formed so as to enclose the coil 51 using a sealing material including a resin and a magnetic material. As the sealing material, for example, an iron-based metal magnetic powder is used as a magnetic material, and an epoxy resin is used as a resin, and a mixture thereof is used. The end surface of the molded body 52 is exposed such that the surface of the lead-out end portion 51 b of the coil 51 is flush with the end surface of the molded body 52, and extends in the side surface direction of the molded body 52. Further, the upper, lower, left, and right sides of the end surface side of the molded body 52 are formed smaller than the upper, lower, left and right sides of the molded body 52, and the recesses 52a, 52b, 52c, 52d, 52e, 52f, 52g, and 52h are formed.
And the external terminal 53 is formed by apply | coating a conductive material to the end surface of this molded object 52, and the dents 52a, 52b, 52c, 52d, 52e, 52f, 52g, 52h. At this time, the conductive material is applied so as not to protrude from the recesses 52a, 52b, 52c, 52d, 52e, 52f, 52g, and 52h, and to be flush with the upper, lower, left, and right sides of the molded body. The external terminals 53 are formed on the same plane as the upper, lower, left, and right sides of the molded body 52.

以上、本発明の表面実装インダクタ及びその製造方法の実施例を述べたが、本発明はこの実施例に限られるものではない。例えば、実施例では封止材として磁性材料に鉄系金属磁性粉末、樹脂にエポキシ樹脂を用いたが、磁性材料として他の組成の金属磁性粉末、その表面がガラス等の絶縁体で被覆された金属磁性粉末、表面を改質した金属磁性粉末を用いても良い。また、樹脂として、ポリイミド樹脂やフェノール樹脂などの熱硬化性樹脂や、ポリエチレン樹脂やポリアミド樹脂などの熱可塑性樹脂を用いても良い。また、コイルを構成する導線として断面が平角状の平角線を用いる場合を示したが、断面が円形、長方形、多角形等様々な形状のものを用いることができる。   As mentioned above, although the Example of the surface mount inductor of this invention and its manufacturing method was described, this invention is not limited to this Example. For example, in the examples, iron-based metal magnetic powder was used as the sealing material as the sealing material, and epoxy resin was used as the resin, but the metal magnetic powder of another composition was used as the magnetic material, and its surface was coated with an insulator such as glass Metal magnetic powder or metal magnetic powder with a modified surface may be used. Further, as the resin, a thermosetting resin such as a polyimide resin or a phenol resin, or a thermoplastic resin such as a polyethylene resin or a polyamide resin may be used. Moreover, although the case where the rectangular wire used as a conducting wire which comprises a coil was shown was shown, the thing of various shapes, such as circular, a rectangle, and a polygon, can be used for a cross section.

１１ コイル
１２ 成形体 11 Coil 12 Molded body

Claims (3)

導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、該コイルを内蔵する成形体を備えた表面実装インダクタにおいて、
該コイルの引き出し端部の表面が、該成形体の端面にそれぞれその表面と同一面になる様に露出、延在し、
該成形体の端面の上部と下部が成形体の上下方向の大きさよりも小さく形成され、
その上下面が成形体の上下面と同一面となる様に該成形体に導電材料を塗布して外部端子が形成されたことを特徴とする表面実装インダクタ。 In a surface mount inductor comprising a coil formed by winding a conductive wire and a sealing material containing a resin and a magnetic material, and a molded body incorporating the coil,
The surface of the coil drawing end is exposed and extended so that the end surface of the molded body is flush with the surface of the molded body,
The upper and lower ends of the end surface of the molded body are formed smaller than the vertical size of the molded body,
A surface-mount inductor, wherein an external terminal is formed by applying a conductive material to the molded body so that the upper and lower surfaces thereof are flush with the upper and lower surfaces of the molded body. 導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、該コイルを内蔵する成形体を備えた表面実装インダクタにおいて、
該コイルの引き出し端部の表面が、該成形体の端面にそれぞれその表面と同一面になる様に露出、延在し、
該成形体の端面の左右が成形体の左右方向の大きさよりも小さく形成され、
その左右が成形体の左右と同一面となる様に該成形体に導電材料を塗布して外部端子が形成されたことを特徴とする表面実装インダクタ。 In a surface mount inductor comprising a coil formed by winding a conductive wire and a sealing material containing a resin and a magnetic material, and a molded body incorporating the coil,
The surface of the coil drawing end is exposed and extended so that the end surface of the molded body is flush with the surface of the molded body,
The left and right end surfaces of the molded body are formed smaller than the size in the left-right direction of the molded body,
A surface-mount inductor, wherein an external terminal is formed by applying a conductive material to the molded body so that the left and right sides thereof are flush with the left and right sides of the molded body. 導線を巻回して形成したコイルと、樹脂と磁性材料を含む封止材を用いて形成され、該コイルを内蔵する成形体を備えた表面実装インダクタにおいて、
該コイルの引き出し端部の表面が、該成形体の端面にそれぞれその表面と同一面になる様に露出、延在し、
該成形体の端面の上下左右が成形体の上下左右よりも小さく形成され、
その上下左右が成形体の上下左右と同一面となる様に該成形体に導電材料を塗布して外部端子が形成されたことを特徴とする表面実装インダクタ。 In a surface mount inductor comprising a coil formed by winding a conductive wire and a sealing material containing a resin and a magnetic material, and a molded body incorporating the coil,
The surface of the coil drawing end is exposed and extended so that the end surface of the molded body is flush with the surface of the molded body,
The top, bottom, left and right of the end surface of the molded body are formed smaller than the top, bottom, left and right of the molded body,
A surface-mount inductor, wherein an external terminal is formed by applying a conductive material to the molded body so that the upper, lower, left, and right sides are flush with the upper, lower, left, and right sides of the molded body.
JP2015080684A 2015-04-10 2015-04-10 Surface mount inductor Pending JP2016201467A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003031424A (en) * 2001-07-11 2003-01-31 Fdk Corp Chip component
JP2014225590A (en) * 2013-05-17 2014-12-04 東光株式会社 Method for manufacturing surface mounted inductor
JP2015002228A (en) * 2013-06-14 2015-01-05 東光株式会社 Manufacturing method of surface-mounting inductor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003031424A (en) * 2001-07-11 2003-01-31 Fdk Corp Chip component
JP2014225590A (en) * 2013-05-17 2014-12-04 東光株式会社 Method for manufacturing surface mounted inductor
JP2015002228A (en) * 2013-06-14 2015-01-05 東光株式会社 Manufacturing method of surface-mounting inductor

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