JPH08153633A - Winding chip inductor - Google Patents

Winding chip inductor

Info

Publication number
JPH08153633A
JPH08153633A JP6296781A JP29678194A JPH08153633A JP H08153633 A JPH08153633 A JP H08153633A JP 6296781 A JP6296781 A JP 6296781A JP 29678194 A JP29678194 A JP 29678194A JP H08153633 A JPH08153633 A JP H08153633A
Authority
JP
Japan
Prior art keywords
magnetic core
chip inductor
gap
winding
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6296781A
Other languages
Japanese (ja)
Inventor
Yasuhiro Ishimori
康寛 石森
Hideyuki Sato
秀行 佐藤
Kenji Sato
健治 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokin Corp
Original Assignee
Tokin Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokin Corp filed Critical Tokin Corp
Priority to JP6296781A priority Critical patent/JPH08153633A/en
Publication of JPH08153633A publication Critical patent/JPH08153633A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To lessen a winding chip inductor in eddy current loss by a method wherein a magnetic core is arranged on a pair of terminals through the intermediary of a non-magnetic gap material prescribed in thickness. CONSTITUTION: A winding chip inductor is composed of a pair of lead terminals 31 and 32 and a magnetic core 10 arranged between them, wherein both the ends of a winding wound on the magnetic core 10 are connected to the lead terminals 31 and 32. The magnetic core 10 is arranged on the pair of lead terminals 31 and 32 through the intermediary of a prescribed gap g between them or the intermediary of a non-magnetic material gap material 40 of prescribed thickness g. By this setup, an eddy current hardly flows through the magnetic core 10, so that the magnetic core 10 is small in eddy current loss, and a winding chip inductor of this constitution is capable of being enhanced in sharpness or quality factor (Q) as art inductor.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、高周波回路等に対して
表面実装法により実装されてインダクタやトランス等と
して用いられる巻線チップインダクタに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire-wound chip inductor mounted on a high-frequency circuit or the like by a surface mounting method and used as an inductor or a transformer.

【0002】[0002]

【従来の技術】従来のこの種の巻線チップインダクタ
は、基部とその両端から足部が延在している所謂U字型
の形状を呈する磁気コアと、磁気コアの基部に巻回され
た銅線等の巻線と、磁気コアの基部の両端部の下面に接
着されたリード端子とを有している。さらに、リード端
子の一部を残して、通常、樹脂モールドが施されて完成
する。
2. Description of the Related Art A conventional wire-wound chip inductor of this type is wound around a base and a magnetic core having a so-called U-shape in which legs extend from both ends thereof, and a base of the magnetic core. It has a winding wire such as a copper wire and lead terminals bonded to the lower surfaces of both ends of the base of the magnetic core. Further, resin molding is usually applied to complete a part of the lead terminal.

【0003】[0003]

【発明が解決しようとする課題】従来の巻線チップイン
ダクタにおいては、磁気コアとリード端子とが直接接着
されているので、磁気コアにうず電流が流れやすくな
り、うず電流損が大きく、インダクタとしての尖鋭度Q
が低いという問題がある。
In the conventional wire-wound chip inductor, since the magnetic core and the lead terminal are directly adhered to each other, an eddy current easily flows in the magnetic core, resulting in a large eddy current loss and Sharpness Q
There is a problem that is low.

【0004】本発明の課題は、尖鋭度Qが高い巻線チッ
プインダクタを提供することである。
An object of the present invention is to provide a wire-wound chip inductor having a high sharpness Q.

【0005】[0005]

【課題を解決するための手段】本発明によれば、一対の
端子間に磁気コアを配置し、該磁気コアに施された巻線
の両端部が前記端子にそれぞれ接続されて構成される巻
線チップインダクタにおいて、前記磁気コアは、前記一
対の端子に対して所定の厚さの非磁性間隙材を介して配
置されていることを特徴とする巻線チップインダクタが
得られる。
According to the present invention, a winding is formed by disposing a magnetic core between a pair of terminals and connecting both ends of a winding formed on the magnetic core to the terminals. In the wire chip inductor, a wound chip inductor is obtained in which the magnetic core is arranged with respect to the pair of terminals via a non-magnetic gap material having a predetermined thickness.

【0006】[0006]

【実施例】以下、図面を参照して、本発明の実施例によ
る巻線チップインダクタを説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wire wound chip inductor according to an embodiment of the present invention will be described below with reference to the drawings.

【0007】[実施例1]図1は、本発明の実施例1に
よる巻線チップインダクタを示す斜視図である。また、
図2(a)、(b)、および(c)は、実施例1による
巻線チップインダクタの上面図、正面図、および側面図
である。これら図において、実施例1による巻線チップ
インダクタは、従来例と同様に、基部とその両端から足
部が延在している所謂U字型の形状を呈する磁気コア1
0と、磁気コア10の基部に巻回された銅線等の巻線2
0と、磁気コア10の基部の両端部の下面に接着された
一対のリード端子31および32とを有している。さら
に、リード端子のうちの半田付けに用いる面としての下
面(あるいは下面および側面)を残して、通常、樹脂モ
ールド50が施されている。
[Embodiment 1] FIG. 1 is a perspective view showing a wire-wound chip inductor according to Embodiment 1 of the present invention. Also,
2A, 2B, and 2C are a top view, a front view, and a side view of the wire-wound chip inductor according to the first embodiment. In these drawings, the wound chip inductor according to the first embodiment is similar to the conventional example in that the magnetic core 1 has a so-called U-shape in which the base portion and the legs extend from both ends thereof.
0, and a winding 2 such as a copper wire wound around the base of the magnetic core 10.
0 and a pair of lead terminals 31 and 32 bonded to the lower surfaces of both ends of the base of the magnetic core 10. Further, the resin mold 50 is usually applied, leaving the lower surface (or the lower surface and the side surface) of the lead terminal as the surface used for soldering.

【0008】さらに、本巻線チップインダクタにおいて
は、磁気コア10は、一対のリード端子31および32
に対して、所定のギャップgをおいて、即ち、所定の厚
さgの非磁性間隙材40を介して配置されている。
Furthermore, in the present wound chip inductor, the magnetic core 10 has a pair of lead terminals 31 and 32.
On the other hand, they are arranged with a predetermined gap g, that is, via a non-magnetic gap member 40 having a predetermined thickness g.

【0009】次に、実施例1による巻線チップインダク
タの製造方法を、図3(a)および(b)を参照して説
明する。図3(a)および(b)において、まず、平板
状の一対のリード端子31および32上に、非磁性の樹
脂(例えば、☆)を厚さgとなるように塗布して乾燥さ
せ、この後に磁気コア10を接着剤により接合する。
尚、非磁性の樹脂と接着剤との性質を兼ね備えた用剤
(例えば、☆)を用いて、一度に、非磁性間隙材40の
形成と磁気コア10の接着とを行ってもよい。ただし、
この用剤が乾燥する前に、磁気コア10の重みによって
非磁性間隙材40の厚さgが小さくなることのないよう
に留意する必要がある。次に、図1および図2を併せ参
照して、磁気コア10に銅線等の巻線20を巻回し、巻
線20の引き出し端をリード端子31,32に半田付
け、あるいは半田の溶融がなく信頼性の高いスポット溶
接等によって電気的に接続する。続いて、リード端子3
1,32を図1および図2のごとくにフォーミングした
後に、樹脂モール50を施す。尚、リード端子31,3
2のフォーミング工程と、樹脂モール50を施す工程と
の順番を逆とすることも可能である。以上のようにし
て、実施例1による巻線チップインダクタが得られた。
Next, a method of manufacturing the wire wound chip inductor according to the first embodiment will be described with reference to FIGS. 3 (a) and 3 (b). In FIGS. 3A and 3B, first, a non-magnetic resin is placed on the pair of flat lead terminals 31 and 32.
An oil (for example, star) is applied to have a thickness g and dried, and then the magnetic core 10 is bonded with an adhesive.
An agent that combines the properties of a non-magnetic resin and an adhesive
The non-magnetic gap material 40 may be formed and the magnetic core 10 may be bonded at once using (for example, star) . However,
It is necessary to take care that the weight g of the magnetic core 10 does not reduce the thickness g of the non-magnetic gap member 40 before the agent dries. Next, referring also to FIG. 1 and FIG. 2, a winding wire 20 such as a copper wire is wound around the magnetic core 10, and the lead-out end of the winding wire 20 is soldered to the lead terminals 31 and 32, or the solder is melted. Without electrical connection by highly reliable spot welding. Then, the lead terminal 3
After forming 1, 32 as shown in FIGS. 1 and 2, a resin molding 50 is applied. In addition, the lead terminals 31, 3
It is also possible to reverse the order of the forming step 2 and the step of applying the resin molding 50. As described above, the wound chip inductor according to Example 1 was obtained.

【0010】さて、本発明の実施例1による巻線チップ
インダクタのギャップgによる尖鋭度Qの周波数特性を
測定し、図5〜図6に示す。尚、磁気コア10の材質、
および巻線20の巻回数をも変更して数種類の巻線チッ
プインダクタを製造した。
The frequency characteristics of the sharpness Q due to the gap g of the wound chip inductor according to the first embodiment of the present invention are measured and shown in FIGS. The material of the magnetic core 10
The number of windings of the winding 20 was also changed, and several kinds of winding chip inductors were manufactured.

【0011】以下の表1に、磁気コア10の材質として
の、フェライトA、フェライトBの組成および秤量を示
す。
Table 1 below shows the composition and the weight of ferrite A and ferrite B as the material of the magnetic core 10.

【0012】[0012]

【表1】 [Table 1]

【0013】まず、図5において、磁気コア10の材質
はフェライトA、線径40μmの巻線20は15巻回で
ある。図5を参照すると、ギャップgが300μm(一
点鎖線)、210μm(長破線)、90μm(短破
線)、0μm(実線)の順に、即ち、ギャップgが少な
くとも300μm以下では、ギャップgが大きいほど、
尖鋭度Qの周波数特性に優れていることがわかる。特
に、4MHz〜60MHz程度の周波数帯域では、ギャ
ップgによる周波数特性の相違がみられる。
First, in FIG. 5, the material of the magnetic core 10 is ferrite A, and the winding 20 having a wire diameter of 40 μm has 15 turns. Referring to FIG. 5, the gap g is in the order of 300 μm (dashed line), 210 μm (long dashed line), 90 μm (short dashed line), 0 μm (solid line), that is, when the gap g is at least 300 μm or less, the larger the gap g,
It can be seen that the frequency characteristics of the sharpness Q are excellent. In particular, in the frequency band of about 4 MHz to 60 MHz, a difference in frequency characteristic due to the gap g is seen.

【0014】図6において、磁気コア10の材質はフェ
ライトB、線径40μmの巻線20は35巻線である。
図6を参照すると、ギャップgが300μm(一点鎖
線)、210μm(長破線)、90μm(短破線)、0
μm(実線)の順に、即ち、ギャップgが少なくとも3
00μm以下では、ギャップgが大きいほど、尖鋭度Q
の周波数特性に優れていることがわかる。特に、2MH
z〜30MHzの周波数帯域では、ギャップgによる周
波数特性の相違がみられる。
In FIG. 6, the material of the magnetic core 10 is ferrite B, and the winding 20 having a wire diameter of 40 μm is 35 windings.
Referring to FIG. 6, the gap g is 300 μm (dashed line), 210 μm (long dashed line), 90 μm (short dashed line), 0
μm (solid line), that is, the gap g is at least 3
If it is less than 00 μm, the sharpness Q increases as the gap g increases.
It can be seen that the frequency characteristics of are excellent. Especially 2MH
In the frequency band of z to 30 MHz, there is a difference in frequency characteristic due to the gap g.

【0015】以上の測定結果から、いずれの磁気コア1
0の材質や巻線20の巻回数でも、ギャップgが大きい
ほど、尖鋭度Qの周波数特性に優れていることがわか
る。
From the above measurement results, which magnetic core 1
It can be seen that even with the material of 0 and the number of windings of the winding 20, the larger the gap g is, the more excellent the frequency characteristic of the sharpness Q is.

【0016】[実施例2]実施例2は、本発明による巻
線チップインダクタの製造方法の他の例である。
[Embodiment 2] Embodiment 2 is another example of a method of manufacturing a wire-wound chip inductor according to the present invention.

【0017】図4(a)および(b)を参照して、量産
用のリードフレーム30′のつなぎ部分うちの一対のリ
ード端子31′および32′間には、中央梁33′が備
えられている。中央梁33′の厚さtP は、リード端子
31′,32′の厚さtL とリード端子31′,32′
と磁気コア10との間のギャップgとの合計と同じに設
定されている。さて、リードフレーム30′上の所定部
分に非磁性の接着剤を塗布した後、リード端子31′,
32′および中央梁33′上に磁気コア10を載置して
乾燥させる。この際、磁気コア10が中央梁33′に支
持されるため、ギャップgは維持される。乾燥後、リー
ドフレーム30′からリード端子31′,32′を切り
出し、実施例1と同様に、リード端子31′,32′の
フォーミングと樹脂モールドを施して完成する。
Referring to FIGS. 4A and 4B, a central beam 33 'is provided between the pair of lead terminals 31' and 32 'in the connecting portion of the lead frame 30' for mass production. There is. The thickness t P of the central beam 33 'is equal to the thickness t L of the lead terminals 31', 32 'and the lead terminals 31', 32 '.
Is set to be the same as the sum of the gap g between the magnetic core 10 and the magnetic core 10. Now, after applying a non-magnetic adhesive to a predetermined portion on the lead frame 30 ', the lead terminals 31',
The magnetic core 10 is placed on 32 'and the central beam 33' and dried. At this time, since the magnetic core 10 is supported by the central beam 33 ', the gap g is maintained. After drying, the lead terminals 31 'and 32' are cut out from the lead frame 30 'and the lead terminals 31' and 32 'are formed and resin-molded in the same manner as in the first embodiment.

【0018】尚、本発明の実施例2による巻線チップイ
ンダクタも、実施例1によるものと同様に、ギャップg
が大きいほど、尖鋭度Qの周波数特性に優れている。
The wound chip inductor according to the second embodiment of the present invention also has the same gap g as in the first embodiment.
Is larger, the frequency characteristics of the sharpness Q are more excellent.

【0019】[0019]

【発明の効果】本発明による巻線チップインダクタは、
磁気コアが、一対の端子に対して所定の厚さの非磁性間
隙材を介して配置されているため、磁気コアにうず電流
が流れにくいので、うず電流損が小さい結果、インダク
タとしての尖鋭度Qが高い。
The wire wound chip inductor according to the present invention is
Since the magnetic core is placed between the pair of terminals via the non-magnetic gap material with a certain thickness, it is difficult for eddy current to flow through the magnetic core.As a result, eddy current loss is small, resulting in sharpness as an inductor. Q is high.

【0020】そして、本発明による巻線チップインダク
タを用いた高周波回路等は、低損失である。
A high-frequency circuit or the like using the wire-wound chip inductor according to the present invention has low loss.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の実施例1による巻線チップインダクタ
を示す斜視図である。
FIG. 1 is a perspective view showing a wire-wound chip inductor according to a first embodiment of the present invention.

【図2】図1に示す巻線チップインダクタの三面図であ
り、(a)は平面図、(b)は正面図、(c)は側面図
である。
FIG. 2 is a three-view drawing of the wire-wound chip inductor shown in FIG. 1, where (a) is a plan view, (b) is a front view, and (c) is a side view.

【図3】図1に示す巻線チップインダクタの製造方法を
説明するための二面図であり、(a)はリード端子等の
平面図、(b)はリード端子等の側面図である。
3A and 3B are two views for explaining the method for manufacturing the wire wound chip inductor shown in FIG. 1, in which FIG. 3A is a plan view of a lead terminal and the like, and FIG. 3B is a side view of the lead terminal and the like.

【図4】本発明の実施例2による巻線チップインダクタ
の製造方法を説明するための二面図であり、(a)はリ
ードフレーム等の平面図、(b)はリードフレーム等の
縦断面図である。
4A and 4B are two-sided views for explaining the method for manufacturing the wire-wound chip inductor according to the second embodiment of the present invention, in which FIG. 4A is a plan view of a lead frame or the like, and FIG. It is a figure.

【図5】本発明の実施例1による巻線チップインダクタ
のギャップgによる尖鋭度Qの周波数特性を示す図であ
る。
FIG. 5 is a diagram showing frequency characteristics of the sharpness Q according to the gap g of the wire wound chip inductor according to the first embodiment of the present invention.

【図6】本発明の実施例1による巻線チップインダクタ
のギャップgによる尖鋭度Qの周波数特性を示す図であ
る。
FIG. 6 is a diagram showing frequency characteristics of the sharpness Q according to the gap g of the wire wound chip inductor according to the first embodiment of the present invention.

【符号の説明】[Explanation of symbols]

10 磁気コア 20 巻線 31、32 リード端子 30′ リードフレーム 31′、32′ リード端子 33′ 中央梁 40 非磁性間隙材 50 樹脂モールド g ギャップ 10 magnetic core 20 winding 31, 32 lead terminal 30 'lead frame 31', 32 'lead terminal 33' central beam 40 non-magnetic gap material 50 resin mold g gap

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 一対の端子間に磁気コアを配置し、該磁
気コアに施された巻線の両端部が前記端子にそれぞれ接
続されて構成される巻線チップインダクタにおいて、前
記磁気コアは、前記一対の端子に対して所定の厚さの非
磁性間隙材を介して配置されていることを特徴とする巻
線チップインダクタ。
1. In a wound chip inductor configured by disposing a magnetic core between a pair of terminals and connecting both ends of a winding formed on the magnetic core to the terminals respectively, the magnetic core comprises: A wound chip inductor, wherein the wound chip inductor is arranged with respect to the pair of terminals with a non-magnetic gap material having a predetermined thickness interposed therebetween.
JP6296781A 1994-11-30 1994-11-30 Winding chip inductor Pending JPH08153633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6296781A JPH08153633A (en) 1994-11-30 1994-11-30 Winding chip inductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6296781A JPH08153633A (en) 1994-11-30 1994-11-30 Winding chip inductor

Publications (1)

Publication Number Publication Date
JPH08153633A true JPH08153633A (en) 1996-06-11

Family

ID=17838057

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6296781A Pending JPH08153633A (en) 1994-11-30 1994-11-30 Winding chip inductor

Country Status (1)

Country Link
JP (1) JPH08153633A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104008852A (en) * 2014-05-04 2014-08-27 太尼电电子科技(东莞)有限公司 Substrate of chip inductor
JP2022034595A (en) * 2020-08-19 2022-03-04 Tdk株式会社 Coil component

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104008852A (en) * 2014-05-04 2014-08-27 太尼电电子科技(东莞)有限公司 Substrate of chip inductor
JP2022034595A (en) * 2020-08-19 2022-03-04 Tdk株式会社 Coil component

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