JPH0515409U - Laminated coil - Google Patents

Laminated coil

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Publication number
JPH0515409U
JPH0515409U JP6044491U JP6044491U JPH0515409U JP H0515409 U JPH0515409 U JP H0515409U JP 6044491 U JP6044491 U JP 6044491U JP 6044491 U JP6044491 U JP 6044491U JP H0515409 U JPH0515409 U JP H0515409U
Authority
JP
Japan
Prior art keywords
coil
magnetic flux
laminated
conductor
magnetic
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.)
Granted
Application number
JP6044491U
Other languages
Japanese (ja)
Other versions
JP2558986Y2 (en
Inventor
勝 槇野
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.)
Kyocera Corp
Original Assignee
Kyocera Corp
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Filing date
Publication date
Application filed by Kyocera Corp filed Critical Kyocera Corp
Priority to JP1991060444U priority Critical patent/JP2558986Y2/en
Publication of JPH0515409U publication Critical patent/JPH0515409U/en
Application granted granted Critical
Publication of JP2558986Y2 publication Critical patent/JP2558986Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

(57)【要約】 【目的】導体回りにおける磁束の小ループ化を防止し
て、高いインダクタンスを確実に得ることができるとと
もに、容易に製造することができる積層型コイルを提供
することを目的とする。 【構成】絶縁性セラミック体33にコイル形成用導体3
5を形成したコイル層31を複数積層するとともに、各
コイル形成用導体35を絶縁性セラミック体33に設け
たスルーホール41を介して相互に導通した積層型コイ
ルにおいて、コイル層31間に、絶縁性セラミック体3
3に磁束遮断体39を形成した磁束遮断層37を介在さ
せたものである。
(57) [Abstract] [Purpose] An object of the present invention is to provide a laminated coil capable of preventing a small loop of magnetic flux around a conductor, reliably obtaining high inductance, and easily manufactured. To do. [Structure] Insulating ceramic body 33 and coil forming conductor 3
In the laminated coil in which a plurality of coil layers 31 each having the number 5 are laminated and the coil forming conductors 35 are electrically connected to each other through the through holes 41 provided in the insulating ceramic body 33, insulation is provided between the coil layers 31. Ceramic body 3
3, a magnetic flux blocking layer 37 having a magnetic flux blocking body 39 is interposed.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、例えば、電気絶縁性の金属酸化物磁性材料や絶縁性セラミック材料 より形成される絶縁性セラミック体にコイル形成用導体を形成したコイル層を複 数積層して形成される積層型コイルに関する。 The present invention is, for example, a laminated coil formed by laminating a plurality of coil layers in which a coil-forming conductor is formed on an insulating ceramic body formed of an electrically insulating metal oxide magnetic material or an insulating ceramic material. Regarding

【0002】[0002]

【従来技術】[Prior art]

従来、コイル部品の多くはフェライトなどの磁性材料に銅線を巻いた構造であ ったが、部品の小型化及び回路への装着の容易性から、近年においては、印刷, 積層等の技術を用いた積層型チップ部品が使用されるようになっている。 Conventionally, most coil components had a structure in which a copper wire was wound around a magnetic material such as ferrite, but in recent years technologies such as printing and lamination have been adopted because of the miniaturization of components and the ease of mounting on circuits. The used laminated chip parts are now being used.

【0003】 このような積層型コイルとしては、特公昭62−22244号公報等が知られ ている。As such a laminated coil, Japanese Patent Publication No. Sho 62-22244 is known.

【0004】 図4および図5は、この公報に開示される積層型コイルを示すもので、符号1 1は磁性体層を示し、符号13は磁性体層11と交互に印刷して1本のコイルと なるように形成された導体を示している。この導体13の両端T1 ,T2 は積層 体の外周側面へ引き出され、導体13の周囲は、図6に示すように、全て磁性体 で埋められている。FIG. 4 and FIG. 5 show a laminated coil disclosed in this publication, in which reference numeral 11 indicates a magnetic material layer, and reference numeral 13 indicates a magnetic material layer 11 which is alternately printed to form a single coil. It shows a conductor formed to be a coil. Both ends T 1 and T 2 of the conductor 13 are drawn to the outer peripheral side surface of the laminated body, and the periphery of the conductor 13 is entirely filled with a magnetic material as shown in FIG.

【0005】 このような積層型コイルでは、導体13の周囲が全て磁性体で埋められている ため、磁束の流れが、図6に示したように、全てφ1 ,φ2 といった理想的な分 布とならないで、導体13の回りに小ループを形成するφA ,φB のような漏れ を生じる。従って積層型コイルのインダクタンス値は期待する程上がらないとい う問題があった。このような問題を防止するためには、積層型コイルにおけるコ イル巻数を増加することが必要となるが、このようにコイル巻数を増加すると工 程の増大となるという問題があった。In such a laminated coil, since the entire circumference of the conductor 13 is filled with a magnetic material, the magnetic flux flows are ideally divided by φ 1 and φ 2 as shown in FIG. Instead of becoming a cloth, leakages such as φ A and φ B that form small loops around the conductor 13 occur. Therefore, there was a problem that the inductance value of the laminated coil did not rise as expected. In order to prevent such a problem, it is necessary to increase the number of coil windings in the laminated coil, but there is a problem in that increasing the number of coil windings in this way increases the process.

【0006】 そこで、図7に示すように、磁束が小ループを形成する可能性のある箇所の導 体13の間に低透磁率の磁性体層15を形成することにより、導体13回りにお ける磁束の小ループをなくした積層型コイルが提案されている。Therefore, as shown in FIG. 7, a magnetic material layer 15 having a low magnetic permeability is formed between the conductors 13 at the places where the magnetic flux may form a small loop, so that the conductor 13 is surrounded. A laminated coil has been proposed which eliminates a small loop of magnetic flux.

【0007】 図8乃至図10は、この積層型コイルの製造工程を示すもので、先ず、図8に 示すように、印刷された磁性を有する第1層17の上に導体21を印刷し、次に 、図9および図10に示すように導体21の部分は除いて高透磁率の磁性体のペ ースト23を印刷し、さらに、図11に示すように、導体21の上に低透磁率の 磁性体のペースト25を印刷し、以下導体21に接続する導体を印刷して順次同 様な積層を反復することにより形成される。8 to 10 show a manufacturing process of this laminated coil. First, as shown in FIG. 8, a conductor 21 is printed on the printed magnetic first layer 17, Next, as shown in FIGS. 9 and 10, a portion 23 of the conductor 21 is removed, and a paste 23 of a magnetic material having a high magnetic permeability is printed. Further, as shown in FIG. It is formed by printing the magnetic paste 25, printing a conductor to be connected to the conductor 21, and successively repeating the same lamination.

【0008】[0008]

【考案が解決しようとする問題点】[Problems to be solved by the device]

しかしながら、このような積層型コイルでは、導体21回りにおける磁束の小 ループ化を防止することはできるが、低透磁率の磁性体のペースト25は焼結中 に磁心となる高透磁率の磁性体のペースト23と反応を起こすため、組成の変動 が生じ、これにより、磁心が低透磁率となり、期待する程のインダクタンスが得 られないという問題があった。また、上記のような積層型コイルでは、導体21 の間に低透磁率の磁性体層15を形成することは困難であり、製造工程が複雑化 し、実用的でないという問題があった。 However, in such a laminated coil, it is possible to prevent the magnetic flux from forming a small loop around the conductor 21, but the paste 25 of a magnetic material having a low magnetic permeability is a magnetic material having a high magnetic permeability which becomes a magnetic core during sintering. However, there is a problem in that the magnetic core has a low magnetic permeability and the desired inductance cannot be obtained. Further, in the laminated coil as described above, it is difficult to form the magnetic material layer 15 having a low magnetic permeability between the conductors 21, the manufacturing process is complicated, and there is a problem that it is not practical.

【0009】 本考案の積層型コイルは、上記のような問題点を解決するためになされたもの で、導体回りにおける磁束の小ループ化を防止して、高いインダクタンスを確実 に得ることができるとともに、容易に製造することができる積層型コイルを提供 することを目的とする。The laminated coil of the present invention has been made in order to solve the above problems, and can prevent a small loop of the magnetic flux around the conductor and can reliably obtain a high inductance. An object of the present invention is to provide a laminated coil that can be easily manufactured.

【0010】[0010]

【問題点を解決するための手段】[Means for solving problems]

本考案者等は、上記問題について鋭意考察,研究した結果、単に導体間に磁気 抵抗となる薄い層を形成するという簡便な構造によって、磁性体に何ら弊害を及 ぼすことなく磁束の小ループ化を防止することができることを突き止めた。 As a result of diligent study and research on the above-mentioned problems, the inventors of the present invention have found that a simple structure of simply forming a thin layer that serves as a magnetic resistance between conductors does not cause any adverse effect on a magnetic substance and causes a small loop of magnetic flux. It has been found that it is possible to prevent aging.

【0011】 即ち、本考案の積層型コイルは、絶縁性セラミック体にコイル形成用導体を形 成したコイル層を複数積層するとともに、各コイル形成用導体を前記絶縁性セラ ミック体に設けたスルーホールを介して相互に導通した積層型コイルにおいて、 前記コイル層間に、前記絶縁性セラミック体に磁束遮断体を形成した磁束遮断層 を介在させたものである。That is, in the laminated coil of the present invention, a plurality of coil layers each having a coil-forming conductor formed on an insulating ceramic body are laminated, and each coil-forming conductor is provided on the insulating ceramic body. In a laminated coil electrically connected to each other through a hole, a magnetic flux blocking layer having a magnetic flux blocking body formed on the insulating ceramic body is interposed between the coil layers.

【0012】[0012]

【作用】[Action]

本考案の積層型コイルでは、磁束はコイル形成用導体の回りに小ループを形成 しようとするが、コイル層間に、コイル形成用導体とは導通しない磁束遮断体を 絶縁性セラミック体に形成してなる磁束遮断層を介在させたので、磁束遮断体に より磁束が遮断され、低透磁率の磁性体を積層することなく、コイル形成用導体 回りにおける磁束の小ループ化が阻止される。また、本考案の積層型コイルは、 コイル層と、このコイル層と同様にして形成された磁束遮断層とを交互に積層す ることにより製造される。 In the laminated coil of the present invention, the magnetic flux tries to form a small loop around the coil forming conductor, but a magnetic flux blocker that does not conduct with the coil forming conductor is formed in the insulating ceramic body between the coil layers. Since the magnetic flux blocking layer is interposed, the magnetic flux is blocked by the magnetic flux blocking body, and the formation of a small loop of magnetic flux around the coil forming conductor is prevented without laminating a magnetic body having a low magnetic permeability. Further, the laminated coil of the present invention is manufactured by alternately laminating a coil layer and a magnetic flux blocking layer formed in the same manner as the coil layer.

【0013】[0013]

【実施例】【Example】

以下、本考案の積層型コイルの一実施例を図面に基づいて詳細に説明する。 図1および図2は、本考案の積層型コイルを示すもので、図において、符号3 1は、多数積層されたコイル層を示している。これらのコイル層31は、例えば 、電気絶縁性の金属酸化物磁性材料(いわゆるフェライト)や絶縁性セラミック 材料より形成される絶縁性セラミック体33に、例えば、Ag,Pt,Pdから なるコイル形成用導体35を形成して構成されている。 An embodiment of the laminated coil of the present invention will be described in detail below with reference to the drawings. 1 and 2 show a laminated coil of the present invention. In the drawings, reference numeral 31 indicates a large number of laminated coil layers. These coil layers 31 are formed, for example, on an insulating ceramic body 33 formed of an electrically insulating metal oxide magnetic material (so-called ferrite) or an insulating ceramic material for forming a coil made of Ag, Pt, or Pd. It is configured by forming a conductor 35.

【0014】 そして、各コイル層31間にはそれぞれ磁束遮断層37が形成されている。こ れらの磁束遮断層37は、絶縁性セラミック体33に、例えば、Ag,Pt,P dからなる磁束遮断体39を形成して構成されている。この磁束遮断体39は、 コイル形成用導体35とほぼ同様の形状、即ち、コ字状に形成されている。A magnetic flux blocking layer 37 is formed between each coil layer 31. These magnetic flux blocking layers 37 are formed by forming a magnetic flux blocking body 39 made of, for example, Ag, Pt, Pd on the insulating ceramic body 33. The magnetic flux blocking body 39 is formed in a shape substantially similar to that of the coil forming conductor 35, that is, a U-shape.

【0015】 また、コイル形成用導体35は、その端部が絶縁性セラミック体33に形成さ れたスルーホール41を介して相互に接続され、磁束遮断層37の絶縁性セラミ ック体33には、磁束遮断体39がスルーホール41が形成された側に開口して 形成され、磁束遮断体39はコイル形成用導体35とは導通していない。 この ような積層型コイルは、図3(a)に示すように、第1シート51に、第1コイ ル形成用導体のペースト53を印刷し、乾燥後、第1シート51にスルーホール 55が形成された第2シート57を圧着する。次に、図3(b)に示すように、 第2シート57にスルーホール55を通過しないコ字状の第1磁束遮断体用のペ ースト59を印刷し、乾燥後、さらに、第2シート57と同じ位置にスルーホー ル61が形成された第3シート63を圧着する。この後、第3シート63に第2 コイル形成用導体のペースト65を印刷する。このような工程を繰り返すことに より積層型コイルを形成する。In addition, the coil forming conductors 35 are connected to each other at their ends via through holes 41 formed in the insulating ceramic body 33, and are connected to the insulating ceramic body 33 of the magnetic flux blocking layer 37. Is formed by opening the magnetic flux blocking body 39 on the side where the through hole 41 is formed, and the magnetic flux blocking body 39 is not electrically connected to the coil forming conductor 35. In such a laminated coil, as shown in FIG. 3A, a paste 53 of a first coil forming conductor is printed on the first sheet 51, and after drying, a through hole 55 is formed in the first sheet 51. The formed second sheet 57 is pressure bonded. Next, as shown in FIG. 3B, the second sheet 57 is printed with a U-shaped paste 59 for the first magnetic flux shield which does not pass through the through hole 55, and after drying, the second sheet is further formed. The third sheet 63 having the through hole 61 formed at the same position as 57 is pressure-bonded. After that, the second coil forming conductor paste 65 is printed on the third sheet 63. A laminated coil is formed by repeating such a process.

【0016】 以上のように構成された積層型コイルでは、磁束はコイル形成用導体35の回 りに小ループを形成しようとするが、コイル層31間に磁束遮断層37を形成し たので、磁束遮断体39により磁束が遮断され、コイル形成用導体35回りにお ける磁束の小ループ化を防止して、インダクタンス値を確実に大きくすることが できる。In the laminated coil configured as described above, the magnetic flux tries to form a small loop around the coil forming conductor 35, but since the magnetic flux blocking layer 37 is formed between the coil layers 31, The magnetic flux is blocked by the magnetic flux blocking body 39, a small loop of the magnetic flux around the coil forming conductor 35 is prevented, and the inductance value can be reliably increased.

【0017】 また、コイル層31間に、コイル形成用導体35とは導通しない磁束遮断体3 9を絶縁性セラミック体33に形成してなる磁束遮断層37を介在させたので、 低透磁率の磁性体を積層することなく、コイル形成用導体35回りにおける磁束 の小ループ化を防止することができる。従って、低透磁率の磁性体と磁心となる 高透磁率の磁性体が焼成中に反応を起こすことがなく、磁心の組成変動を生じる ことがない。Further, since the magnetic flux blocking layer 37 formed by forming the magnetic flux blocking body 39, which is not electrically connected to the coil forming conductor 35, on the insulating ceramic body 33 is interposed between the coil layers 31, a low magnetic permeability is obtained. It is possible to prevent the magnetic flux from forming a small loop around the coil forming conductor 35 without laminating the magnetic body. Therefore, the magnetic material having a low magnetic permeability does not react with the magnetic material having a high magnetic permeability to form the magnetic core during firing, and the composition of the magnetic core does not change.

【0018】 さらに、コイル層31と、このコイル層31と同様にして形成された磁束遮断 層37とを交互に積層するだけで製造でき、積層型コイルを容易に製造すること ができる。Further, the coil layer 31 and the magnetic flux blocking layer 37 formed in the same manner as the coil layer 31 can be manufactured simply by alternately laminating them, and the laminated coil can be easily manufactured.

【0019】 尚、上記実施例では、磁束遮断体39をコ字状に形成した例について説明した が、本考案は上記実施例に限定されるものではなく、磁束遮断体の形状は問わず 、コイル形成用導体と導通しなければ良い。In the above embodiment, an example in which the magnetic flux blocking body 39 is formed in a U shape has been described, but the present invention is not limited to the above embodiment, and the shape of the magnetic flux blocking body does not matter. It does not have to be electrically connected to the coil forming conductor.

【0020】 また、上記実施例では、5層の積層型コイルについて説明したが、本考案は上 記実施例に限定されるものではなく、本考案の積層型コイルは4層以下でも良く 、6層以上でも良い。In addition, in the above-mentioned embodiment, the laminated coil having five layers has been described, but the present invention is not limited to the above-mentioned embodiment, and the laminated coil of the present invention may have four layers or less. More layers may be used.

【0021】[0021]

【考案の効果】[Effect of the device]

本考案の積層型コイルでは、コイル層間に、絶縁性セラミック体に磁束遮断体 を形成した磁束遮断層を介在させたので、低透磁率の磁性体を積層することなく 、コイル形成用導体回りにおける磁束の小ループ化を防止できる。これにより、 低透磁率の磁性体と高透磁率の磁性体が焼結中に反応を起こすことがなく、磁性 体の組成変動を生じることがない。 In the laminated coil of the present invention, since the magnetic flux blocking layer in which the magnetic flux blocking body is formed on the insulating ceramic body is interposed between the coil layers, it is possible to surround the coil forming conductor without laminating the magnetic body of low magnetic permeability. A small loop of magnetic flux can be prevented. As a result, the low-permeability magnetic material and the high-permeability magnetic material do not react with each other during sintering, and the composition of the magnetic material does not change.

【0022】 また、本考案の積層型コイルは、例えば、絶縁性セラミック体を構成する第1 シートに、第1コイル形成用導体を形成するペーストを印刷し、乾燥後、第1シ ートにスルーホールが形成された第2シートを圧着し、この第2シートにスルー ホールを通過しないコ字状の磁束遮断体を形成するペーストを印刷し、このよう な工程を繰り返すことにより形成するので、コイル層と、このコイル層と同様に して形成された磁束遮断層とを交互に積層するだけで製造でき、積層型コイルを 容易に製造することができる。In the laminated coil of the present invention, for example, the first sheet forming the insulating ceramic body is printed with the paste forming the first coil-forming conductor, dried, and then dried on the first sheet. Since the second sheet on which the through holes are formed is pressure-bonded, a paste for forming a U-shaped magnetic flux shield which does not pass through the through holes is printed on the second sheet, and the process is repeated to form the paste. The coil layer and the magnetic flux blocking layer formed in the same manner as the coil layer can be manufactured simply by alternately laminating them, and the laminated coil can be easily manufactured.

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

【図1】本考案の積層型コイルの一部を示す正面図であ
る。
FIG. 1 is a front view showing a part of a laminated coil of the present invention.

【図2】図1の分解斜視図である。FIG. 2 is an exploded perspective view of FIG.

【図3】本考案の積層型コイルの製造方法を説明するた
めの説明図である。
FIG. 3 is an explanatory view for explaining a method of manufacturing a laminated coil of the present invention.

【図4】従来の積層型コイルの平面図である。FIG. 4 is a plan view of a conventional laminated coil.

【図5】図4のA−A線に沿う縦断面図である。5 is a vertical cross-sectional view taken along the line AA of FIG.

【図6】図4のB−B線に沿う横断面図である。6 is a cross-sectional view taken along the line BB of FIG.

【図7】コイル形成用導体間における絶縁性セラミック
体を低透磁率体とした従来の積層型コイルを示す横断面
図である。
FIG. 7 is a cross-sectional view showing a conventional laminated coil in which an insulating ceramic body between coil forming conductors has a low magnetic permeability.

【図8】図7の製造方法を示す平面図であり、導体を第
1層に形成した状態を示す図である。
FIG. 8 is a plan view showing the manufacturing method of FIG. 7, showing a state in which a conductor is formed in the first layer.

【図9】図7の製造方法を示す平面図であり、導体部分
を除いて磁性体のペーストを印刷した状態を示す図であ
る。
FIG. 9 is a plan view showing the manufacturing method of FIG. 7, showing a state in which a magnetic paste is printed except for the conductor portion.

【図10】図9のC−C線に沿う横断面図である。10 is a cross-sectional view taken along the line CC of FIG.

【図11】図9における導体部分に低透磁率体のペース
トを印刷した状態を示す横断面図である。
11 is a transverse cross-sectional view showing a state in which a paste of a low magnetic permeability material is printed on the conductor portion in FIG.

【符号の説明】[Explanation of symbols]

31 コイル層 33 絶縁性セラミック体 35 コイル形成用導体 37 磁束遮断層 39 磁束遮断体 41 スルーホール 31 coil layer 33 insulating ceramic body 35 coil forming conductor 37 magnetic flux blocking layer 39 magnetic flux blocking body 41 through hole

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】絶縁性セラミック体にコイル形成用導体を
形成したコイル層を複数積層するとともに、各コイル形
成用導体を前記絶縁性セラミック体に設けたスルーホー
ルを介して相互に導通した積層型コイルにおいて、前記
コイル層間に、絶縁性セラミック体に磁束遮断体を形成
した磁束遮断層を介在させたことを特徴とする積層型コ
イル。
1. A laminated type in which a plurality of coil layers each having a coil-forming conductor formed on an insulating ceramic body are laminated, and the coil-forming conductors are electrically connected to each other through through holes provided in the insulating ceramic body. In the coil, a laminated coil in which a magnetic flux blocking layer having a magnetic flux blocking body formed on an insulating ceramic body is interposed between the coil layers.
JP1991060444U 1991-07-31 1991-07-31 Laminated coil Expired - Lifetime JP2558986Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1991060444U JP2558986Y2 (en) 1991-07-31 1991-07-31 Laminated coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1991060444U JP2558986Y2 (en) 1991-07-31 1991-07-31 Laminated coil

Publications (2)

Publication Number Publication Date
JPH0515409U true JPH0515409U (en) 1993-02-26
JP2558986Y2 JP2558986Y2 (en) 1998-01-14

Family

ID=13142459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1991060444U Expired - Lifetime JP2558986Y2 (en) 1991-07-31 1991-07-31 Laminated coil

Country Status (1)

Country Link
JP (1) JP2558986Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53116188U (en) * 1977-02-23 1978-09-14
JP2007067427A (en) * 2006-10-13 2007-03-15 Tdk Corp Sheet used for constituting electronic component

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0360106A (en) * 1989-07-28 1991-03-15 Murata Mfg Co Ltd Laminated chip inductor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0360106A (en) * 1989-07-28 1991-03-15 Murata Mfg Co Ltd Laminated chip inductor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53116188U (en) * 1977-02-23 1978-09-14
JP2007067427A (en) * 2006-10-13 2007-03-15 Tdk Corp Sheet used for constituting electronic component
JP4618442B2 (en) * 2006-10-13 2011-01-26 Tdk株式会社 Manufacturing method of sheet used for configuration of electronic component

Also Published As

Publication number Publication date
JP2558986Y2 (en) 1998-01-14

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