JPH0543453Y2 - - Google Patents
Info
- Publication number
- JPH0543453Y2 JPH0543453Y2 JP1989076388U JP7638889U JPH0543453Y2 JP H0543453 Y2 JPH0543453 Y2 JP H0543453Y2 JP 1989076388 U JP1989076388 U JP 1989076388U JP 7638889 U JP7638889 U JP 7638889U JP H0543453 Y2 JPH0543453 Y2 JP H0543453Y2
- Authority
- JP
- Japan
- Prior art keywords
- pair
- recess
- ring
- magnetic body
- core
- 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.)
- Expired - Lifetime
Links
- 239000004020 conductor Substances 0.000 claims description 28
- 239000000696 magnetic material Substances 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 230000002265 prevention Effects 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims 3
- 229910000679 solder Inorganic materials 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Coils Or Transformers For Communication (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、自動装着に適した例えばバルン変成
器等のインダクタンス部品に関する。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an inductance component suitable for automatic mounting, such as a balun transformer.
（従来の技術）
従来、バルン変成器は第１３図示のように平行
な２つの貫通孔ａを有するフエライトコアｂを用
い、この２つの貫通孔ａにポリウレタン樹脂で被
覆されて一体となりコ字形に形成された平行導線
ｃを挿通し、その中央部を接着剤ｄでフエライト
コアｂに固定し、両端末をそれぞれ２つに分離し
たのち、溶融半田中に浸漬して、溶融半田の熱で
ポリウレタン樹脂を溶融除去するとともに導線ｃ
の表面に半田被覆し、リード端子ｅとしている。(Prior Art) Conventionally, a balloon transformer uses a ferrite core b having two parallel through holes a as shown in Fig. 13, and these two through holes a are coated with polyurethane resin and are integrated into a U-shape. The formed parallel conductive wire c is inserted, its central part is fixed to the ferrite core b with adhesive d, both ends are separated into two parts, and then immersed in molten solder, and polyurethane is melted by the heat of the molten solder. While melting and removing the resin, the conductor c
The surface of the terminal is coated with solder to form a lead terminal e.
また、従来の他のバルン変成器は、少なくとも
一方に直線状の溝を有する２つの磁性体から成る
コアを備え、２つの導体を絶縁体を介して重ね合
わせて前記溝に収納し、２つの磁性体を接合して
構成されている。 In addition, other conventional balloon transformers include a core made of two magnetic materials having a linear groove on at least one side, and two conductors are overlapped with each other via an insulator and housed in the groove. It is constructed by bonding magnetic materials.
（考案が解決しようとする課題）
上述した従来のバルン変成器は、他の電子部品
と同様に例えばプリント基板に自動接着機を用い
て搭載し、半田付け可能なものが望まれており、
この時、リード端子の高い折り曲げ強度が必要と
されるので、導線ｃの線径を太くすると、熱容量
が大きくなるので、導線ｃの端末を溶融半田に浸
漬したとき、フエライトｂの内部のポリウレタン
樹脂まで熱伝導によつて溶融して導線ｃ，ｃ間が
電気的に短絡することがあるという課題があつ
た。(Problems to be Solved by the Invention) The conventional balloon transformer described above is desired to be able to be mounted and soldered onto a printed circuit board, for example, using an automatic bonding machine, like other electronic components.
At this time, high bending strength of the lead terminal is required, so if the wire diameter of the conductor c is increased, the heat capacity increases, so when the end of the conductor c is immersed in molten solder, the polyurethane resin However, there was a problem in that the conductors c and c could melt due to heat conduction, causing an electrical short circuit between the conductors c and c.
上述した従来の他のバルン変成器は、２つの磁
性体の接合がずれ易いため特性がばらつき易く、
また電磁結合度が小さいという課題があつた。 In the other conventional balun transformers mentioned above, the characteristics tend to vary because the bond between the two magnetic bodies tends to shift.
Another problem was that the degree of electromagnetic coupling was low.
本考案は、従来のこのような課題を解決するこ
とをその目的とするものである。 The purpose of the present invention is to solve these conventional problems.
（課題を解決するための手段）
本考案は、上記の目的を達成するために、請求
項１に記載のように、一対の電気絶縁性磁性体か
ら成るコアの一方の磁性体の一主面に、リング状
凹部と該凹部に連なる外部引出し用溝を設けると
共にリング状凹部の内側に位置ずれ防止用凹部を
設け、前記リング状凹部及び外部引出し用溝に耐
熱性絶縁シートを介して一部が切除されたループ
部と該ループ部に連なる一対の引出部とから成る
一対の導体を挿入配置して各一対の引出部をコア
から導出し、一主面に位置ずれ防止用凸部を有す
る他方の磁性体を前記一方の磁性体に重ね合わせ
ると共に前記位置ずれ防止用凸部を位置ずれ防止
用凹部に嵌合し、一方の磁性体と他方の磁性体を
一体に固定したことを特徴とし、請求項２に記載
のように、一対の電気絶縁性磁性体から成るコア
の一方の磁性体の一主面に、リング状凹部と該凹
部の対向辺部に連なる夫々一対の外部引出し用溝
を設けると共にリング状凹部の内側に位置ずれ防
止用凹部を設け、前記リング状凹部及び外部引出
し用溝に耐熱性絶縁性シートを介してコ字状の一
対の導体をその一つを逆向きにして挿入配置して
各一対の引出部をコアから導出し、一主面に位置
ずれ防止用凸部を有する他方の磁性体を前記一方
の磁性体に重ね合わせると共に前記位置ずれ防止
用凸部を位置ずれ防止用凹部に嵌合し、一方の磁
性体と他方の磁性体を一体に固定したことを特徴
とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides, as set forth in claim 1, one principal surface of one magnetic body of a pair of electrically insulating magnetic bodies. A ring-shaped recess and an external drawer groove connected to the recess are provided, and a displacement prevention recess is provided inside the ring-shaped recess, and a part of the ring-shaped recess and the external drawer groove are connected to each other through a heat-resistant insulating sheet. A pair of conductors consisting of a loop portion from which is cut out and a pair of lead-out portions connected to the loop portion are inserted and arranged, each pair of lead-out portions are led out from the core, and one main surface has a protrusion for preventing displacement. The other magnetic body is superimposed on the one magnetic body, and the displacement prevention convex portion is fitted into the displacement prevention recess, thereby fixing one magnetic body and the other magnetic body integrally. As described in claim 2, a ring-shaped recess and a pair of external lead-out grooves are provided on one main surface of one of the magnetic members of the core made of a pair of electrically insulating magnetic materials. At the same time, a recess for preventing displacement is provided inside the ring-shaped recess, and a pair of U-shaped conductors are inserted into the ring-shaped recess and the external drawer groove through a heat-resistant insulating sheet, one of which is oriented in the opposite direction. The pair of lead-out portions are led out from the core, and the other magnetic body having a projection for preventing misalignment on one main surface is superimposed on the one magnetic body, and the projection for preventing misalignment is It is characterized in that one magnetic body and the other magnetic body are fixed integrally by fitting into a recess for preventing displacement.
前記コアから導出した前記導体の端部はリード
端子とするか又は前記コア表面に沿つて折曲して
電極部とする。 An end portion of the conductor led out from the core may be used as a lead terminal or bent along the surface of the core to form an electrode portion.
（作用）
電気絶縁性コアの一方の磁性体の凹部に耐熱性
絶縁シートを介して一対の導線を挿入配置したの
で、２本の導線の端末に半田処理を施したとき、
その熱がコア内部まで伝導しても、２本の導線は
耐熱性の絶縁シートの介在によつて電気的に短絡
しない。(Function) Since a pair of conductive wires are inserted into the recessed part of the magnetic material on one side of the electrically insulating core through a heat-resistant insulating sheet, when the ends of the two conductive wires are soldered,
Even if the heat is conducted inside the core, the two conductive wires will not be electrically short-circuited due to the presence of the heat-resistant insulating sheet.
また、一方の磁性体の一主面に位置ずれ防止用
凹部を、他方の磁性体の一主面に位置ずれ防止用
凸部を夫々設けて、該凸部を凹部に嵌合して一方
の磁性体と他方の磁性体を重ね合わせたので、両
磁性体の接合にずれを生ずることがなく特性にば
らつきを生じない。また両磁性体の接触面積は接
触面が平坦のものより増大するから、磁気抵抗が
減少してインダクタンスが増大し、二つの導体間
の電磁的結合度が増大する。更に２つの導体は、
一部が切除されたループ部を有するか又はコ字状
に形成されているから、２つの導体の各インダク
タンスが増大し両者間の電磁結合度が増大する。 In addition, a recess for preventing displacement is provided on one main surface of one magnetic body, and a convex portion for preventing displacement is provided on one main surface of the other magnetic body, and the convex portion is fitted into the recess. Since the magnetic material and the other magnetic material are overlapped, there is no deviation in the bonding between the two magnetic materials, and there is no variation in characteristics. Furthermore, since the contact area between both magnetic bodies is larger than when the contact surfaces are flat, magnetic resistance decreases, inductance increases, and the degree of electromagnetic coupling between the two conductors increases. Two more conductors are
Since the conductor has a partially cut-off loop portion or is formed in a U-shape, the inductance of each of the two conductors increases and the degree of electromagnetic coupling between them increases.
（実施例） 以下本考案の実施例を図面につき説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
第１図乃至第３図は本考案の一実施例のバルン
変成器を示す。 1 to 3 show a balun transformer according to an embodiment of the present invention.
同図において、１は例えばフエライト製コア
で、このコアは一対の磁性体１1及び１2とから成
る。磁性体１1はその一主面にリング状凹部２及
び角形凹部３を有し、磁性体１2は、一主面に凸
部４を有する。 In the figure, 1 is a core made of ferrite, for example, and this core is composed of a pair of magnetic bodies 1 1 and 1 2 . The magnetic body 1 1 has a ring-shaped recess 2 and a square recess 3 on its one main surface, and the magnetic body 1 2 has a protrusion 4 on its one main surface.
５1及び５2はそれぞれ一部が切除されたループ
部６と引出部７1，７2とから成る導体で、この導
体５1及び５2のループ部６はループ状耐熱性絶縁
シート８を介して積み重ねてリング状凹部２に嵌
合配置され、導体５1の引出部７1と７2はそれぞ
れ溝９1及び９2に挿入して外部に引出され、導体
５2の引出部７2と７1はそれぞれ溝９2及び９3に挿
入して引出されその先端はいずれもリード端子１
０となる。導体５1の引出部７2と導体５2の引出
部７2は溶融半田に浸漬することにより一体に接
続される。 5 1 and 5 2 are conductors each consisting of a partially cut-off loop portion 6 and lead-out portions 7 1 and 7 2 . The lead-out parts 7 1 and 7 2 of the conductor 5 1 are respectively inserted into the grooves 9 1 and 9 2 and drawn out to the outside, and the lead-out parts 7 2 of the conductor 5 2 are stacked and fitted into the ring-shaped recess 2 through the conductor 5 1 . and 7 1 are inserted into grooves 9 2 and 9 3 and pulled out, and their tips are connected to lead terminal 1.
It becomes 0. The lead-out portion 7 2 of the conductor 5 1 and the lead-out portion 7 2 of the conductor 5 2 are integrally connected by immersion in molten solder.
導体５1及び５2が凹部２に嵌合配置された磁性
体１1には、その凹部３に凸部４を嵌合して磁性
体１2を重ね合わせ、接着剤１１により一体に固
定される。 The conductors 5 1 and 5 2 are fitted into the recesses 2 of the magnetic body 1 1 , and the convex portion 4 is fitted into the recess 3 to overlap the magnetic body 1 2 and fixed together with an adhesive 11 . Ru.
第４図乃至第７図は、チツプ状に形成された本
考案の他の実施例のバルン変成器を示す。 4 to 7 show another embodiment of the balloon transformer of the present invention, which is formed into a chip shape.
この実施例では、導線５1及び５2はいずれもコ
字形に形成されたもので、これらは互いに逆向き
にし、ループ状耐熱性絶縁シート８を介して積み
重ねてリング状凹部２に嵌合配置する。その引出
部７はそれぞれ溝９に挿入して外部に引出し、コ
ア１の外面に沿つて折曲してその端部を電極部１
２とする。 In this embodiment, the conductive wires 5 1 and 5 2 are both formed in a U-shape, are oriented in opposite directions, are stacked together with a loop-shaped heat-resistant insulating sheet 8 in between, and are fitted into the ring-shaped recess 2. do. Each of the lead-out parts 7 is inserted into the groove 9 and pulled out to the outside, bent along the outer surface of the core 1, and the end thereof is inserted into the electrode part 1.
Set it to 2.
第８図乃至第１１図は、第４図乃至第７図に示
すものの変形例である。 FIGS. 8 to 11 are variations of the ones shown in FIGS. 4 to 7. FIGS.
これは、磁性体１1に溝９に連なる溝１３が形
成され、導体５1及び５2の引出し部７が電極部１
２まで溝９内に嵌入された以外、第４図乃至第７
図に示すものと同じである。 This is because a groove 13 connected to the groove 9 is formed in the magnetic body 1 1 , and the lead-out portions 7 of the conductors 5 1 and 5 2 are connected to the electrode portion 1.
4 to 7 except that up to 2 was inserted into the groove 9.
Same as shown in the figure.
尚、以上の実施例では、いずれも導体として帯
板状のものを用いたが、断面円形等のものを使用
できる。 In the above embodiments, a strip-shaped conductor was used as the conductor, but a conductor having a circular cross section or the like may be used.
（考案の効果）
本考案は上述のとおりの構成を有するから、コ
アから導出されたリード端子又は電極部に半田処
理を施しても、一対の導線間が電気的に短絡する
ことがないという効果と、特性のばらつきがなく
且つ電磁結合度が大きいインダクタンス部品を量
産することができるという効果を有する。(Effect of the invention) Since the present invention has the above-described configuration, there is no electrical short circuit between a pair of conductive wires even if the lead terminal or electrode part led out from the core is soldered. This has the effect that inductance components with uniform characteristics and a high degree of electromagnetic coupling can be mass-produced.
第１図は本考案の一実施例の斜面図、第２図は
その分解斜面図、第３図は第１図の−線截断
面図、第４図は本考案の他の実施例の斜面図、第
５図は下方から見たその斜面図、第６図はその分
解斜面図、第７図は第４図の−線截断面図、
第８図は第７図示のものの変形例の斜面図、第９
図は下方から見たその斜面図、第１０図はその分
解斜面図、第１１図は下方から見たその磁性体の
１つの斜面図、第１２図は第８図の−線
截断面図、第１３図Ａは従来例の斜面図、第１３
図Ｂはそのコアの斜面図である。
１……電気絶縁性コア、１1，１2……磁性体、
２，３……凹部、５1，５2……導線、７，７1，
７2……引出部、８……耐熱性絶縁シート、１０
……リード端子。
Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is an exploded perspective view thereof, Fig. 3 is a sectional view taken along the line - - of Fig. 1, and Fig. 4 is a slope view of another embodiment of the present invention. Figure 5 is a slope view of the same as seen from below, Figure 6 is an exploded slope view of the same, Figure 7 is a sectional view taken along the - line of Figure 4,
Figure 8 is a perspective view of a modification of the one shown in Figure 7;
The figure is a slope view of the magnetic material seen from below, FIG. 10 is an exploded slope view of the same, FIG. 11 is a slope view of one of the magnetic materials seen from below, and FIG. Figure 13A is a slope view of the conventional example;
Figure B is a perspective view of the core. 1... Electric insulating core, 1 1 , 1 2 ... Magnetic material,
2, 3... recess, 5 1 , 5 2 ... conducting wire, 7, 7 1 ,
7 2 ...Drawer part, 8...Heat-resistant insulation sheet, 10
...Lead terminal.
Claims (1)
の磁性体の一主面に、リング状凹部と該凹部に
連なる外部引出し用溝を設けると共にリング状
凹部の内側に位置ずれ防止用凹部を設け、前記
リング状凹部及び外部引出し用溝に耐熱性絶縁
シートを介して一部が切除されたループ部と該
ループ部に連なる一対の引出部とから成る一対
の導体を挿入配置して各一対の引出部をコアか
ら導出し、一主面に位置ずれ防止用凸部を有す
る他方の磁性体を前記一方の磁性体に重ね合わ
せると共に前記位置ずれ防止用凸部を位置ずれ
防止用凹部に嵌合し、一方の磁性体と他方の磁
性体を一体に固定したことを特徴とするインダ
クタンス部品。 ２ 一対の電気絶縁性磁性体から成るコアの一方
の磁性体の一主面に、リング状凹部と該凹部の
対向辺部に連なる夫々一対の外部引出し用溝を
設けると共にリング状凹部の内側に位置ずれ防
止用凹部を設け、前記リング状凹部及び外部引
出し用溝に耐熱性絶縁性シートを介してコ字状
の一対の導体をその一つを逆向きにして挿入配
置して各一対の引出部をコアから導出し、一主
面に位置ずれ防止用凸部を有する他方の磁性体
を前記一方の磁性体に重ね合わせると共に前記
位置ずれ防止用凸部を位置ずれ防止用凹部に嵌
合し、一方の磁性体と他方の磁性体を一体に固
定したことを特徴とするインダクタンス部品。 ３ 前記コアから導出した前記導体の端部をリー
ド端子としたことを特徴とする請求項１又は２
記載のインダクタンス部品。 ４ 前記コアから導出した前記導体の端部を該コ
ア表面に沿つて折曲し電極部としたことを特徴
とする請求項２記載のインダクタンス部品。[Claims for Utility Model Registration] 1. A ring-shaped recess and an external extraction groove connected to the recess are provided on one main surface of one of the cores made of a pair of electrically insulating magnetic materials, and the inside of the ring-shaped recess is provided. A pair of conductors, each of which is provided with a recess for preventing displacement, and which includes a loop portion partially cut out through a heat-resistant insulating sheet in the ring-shaped recess and the external drawer groove, and a pair of drawer portions connected to the loop portion. are inserted and placed, each pair of lead-out portions are led out from the core, and the other magnetic body having a misalignment prevention convex portion on one main surface is superimposed on the one magnetic body, and the misalignment prevention convex portion is An inductance component that fits into a recess for preventing positional displacement and has one magnetic body and the other magnetic body fixed integrally. 2 A ring-shaped recess and a pair of external extraction grooves connected to opposite sides of the recess are provided on one main surface of one of the magnetic members of a core made of a pair of electrically insulating magnetic materials, and a pair of external extraction grooves are provided inside the ring-shaped recess. A recess for preventing misalignment is provided, and a pair of U-shaped conductors are inserted into the ring-shaped recess and the external drawer groove through a heat-resistant insulating sheet, one of which is oriented in the opposite direction, and each pair of drawers is drawn out. the other magnetic body having a misalignment prevention convex portion on one main surface is superimposed on the one magnetic body, and the misalignment prevention convex portion is fitted into the misalignment prevention concave portion. , an inductance component characterized in that one magnetic material and the other magnetic material are fixed integrally. 3. Claim 1 or 2, characterized in that an end portion of the conductor led out from the core is a lead terminal.
Inductance components listed. 4. The inductance component according to claim 2, wherein an end portion of the conductor led out from the core is bent along the surface of the core to form an electrode portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989076388U JPH0543453Y2 (en) | 1989-06-30 | 1989-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989076388U JPH0543453Y2 (en) | 1989-06-30 | 1989-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0317609U JPH0317609U (en) | 1991-02-21 |
| JPH0543453Y2 true JPH0543453Y2 (en) | 1993-11-02 |
Family
ID=31617813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989076388U Expired - Lifetime JPH0543453Y2 (en) | 1989-06-30 | 1989-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0543453Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004221474A (en) * | 2003-01-17 | 2004-08-05 | Neomax Co Ltd | Inductor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4603674B2 (en) * | 1999-10-29 | 2010-12-22 | 株式会社誠和 | Condensation drainage device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853111B2 (en) * | 1974-11-29 | 1983-11-26 | 東レ株式会社 | Measuring device for degree of confounding |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853111U (en) * | 1981-10-06 | 1983-04-11 | アルプス電気株式会社 | Trance |
-
1989
- 1989-06-30 JP JP1989076388U patent/JPH0543453Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5853111B2 (en) * | 1974-11-29 | 1983-11-26 | 東レ株式会社 | Measuring device for degree of confounding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004221474A (en) * | 2003-01-17 | 2004-08-05 | Neomax Co Ltd | Inductor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0317609U (en) | 1991-02-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6522230B2 (en) | Chip-type common mode choke coil | |
| JPH0821505B2 (en) | Electronic device and manufacturing method thereof | |
| JP2003077730A (en) | Common mode choke coil | |
| JPS6171609A (en) | Electronic part | |
| US5296830A (en) | Choke coil | |
| TWI291184B (en) | Chip-type common-mode choke coil | |
| JPH0210705A (en) | Coil component | |
| US6486763B1 (en) | Inductive component and method for making same | |
| JPH0543453Y2 (en) | ||
| JP5093893B2 (en) | choke coil | |
| JPH0632654Y2 (en) | Coil parts | |
| JP2966624B2 (en) | Chip inductor and method of manufacturing the same | |
| JPH0513236A (en) | Coil-mounted electronic component board and its manufacture | |
| JPS6038260Y2 (en) | chip type inductor | |
| JPH0447932Y2 (en) | ||
| JPS6328008A (en) | Chip inductor | |
| JPH0572111U (en) | Chip coil | |
| JPH0427139Y2 (en) | ||
| JPH066613Y2 (en) | Chip type LC filter | |
| JPH0135454Y2 (en) | ||
| JP2826928B2 (en) | Chip electronic components | |
| JPH03261114A (en) | Chip inductor | |
| JP2516849Y2 (en) | Common mode choke coil | |
| JPH07297049A (en) | Surface mount coil | |
| JPH0723930Y2 (en) | Multiple inductance element |