JPH0351922Y2 - - Google Patents
Info
- Publication number
- JPH0351922Y2 JPH0351922Y2 JP1985167670U JP16767085U JPH0351922Y2 JP H0351922 Y2 JPH0351922 Y2 JP H0351922Y2 JP 1985167670 U JP1985167670 U JP 1985167670U JP 16767085 U JP16767085 U JP 16767085U JP H0351922 Y2 JPH0351922 Y2 JP H0351922Y2
- Authority
- JP
- Japan
- Prior art keywords
- varistor
- electrodes
- metal terminals
- outer periphery
- sides
- 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
Links
- 239000002184 metal Substances 0.000 claims description 35
- 229910052751 metal Inorganic materials 0.000 claims description 35
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Landscapes
- Details Of Resistors (AREA)
- Thermistors And Varistors (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は、バリスタに関し、厚み方向の両面に
金属端子を接合し、全体として六面体状に形成す
ることにより、サージエネルギー耐量が高く、機
械的強度の大きい量産性に富む面実装タイプのチ
ツプ状バリスタを提供できるようにしたものであ
る。[Detailed description of the invention] <Industrial application field> The present invention relates to a varistor, and by bonding metal terminals on both sides in the thickness direction and forming the whole into a hexahedral shape, it has a high surge energy resistance and a mechanical This makes it possible to provide a surface-mount type chip-shaped varistor that is strong and easy to mass-produce.
〈従来の技術〉
バリスタの一般的な構造は、第３図に示すよう
に、バリスタ素体１の厚み方向の両面に電極２，
３を被着形成した構造となつている。バリスタ素
体１としては、例えばTiO2系、SiC系、ZnO系、
Fe2O3系等、各種のものが知られており、このバ
リスタ素体１に合せて電極２，３を形成した構造
となつている。<Prior art> As shown in FIG. 3, the general structure of a varistor includes electrodes 2,
3 is deposited and formed. As the varistor element 1, for example, TiO2- based, SiC-based, ZnO-based,
Various types, such as those based on Fe 2 O 3 are known, and have a structure in which electrodes 2 and 3 are formed to match the varistor body 1 .
〈考案が解決しようとする課題〉
ところで、バリスタの重要な特性として、サー
ジエネルギー耐量がある。サージエネルギー耐量
は、バリスタの放熱性及び熱容量に密接に関連
し、放熱性が高くなる程、また熱容量が大きくな
る程、増大する。<Problems to be solved by the invention> By the way, an important characteristic of a varistor is surge energy resistance. The surge energy withstand capacity is closely related to the heat dissipation property and heat capacity of the varistor, and increases as the heat dissipation property becomes higher and the heat capacity becomes larger.
ところが、従来のバリスタは、バリスタ素体１
の両面に電極２，３を被着形成した構造であるた
め、放熱性及び熱容量の改善に限度があり、充分
なサージエネルギー耐量を確保することは困難で
あつた。 However, in the conventional varistor, the varistor body 1
Since the structure has electrodes 2 and 3 adhered to both sides, there is a limit to the improvement of heat dissipation and heat capacity, and it has been difficult to ensure sufficient surge energy resistance.
また、バリスタ素体１の両面に電極２，３を被
着形成した構造であるため、回路基板等に実装す
るに当り、電極２，３にリード線を接続し、この
リード線を介して実装しなければならない。この
ため、面実装部品として使用することができな
い。 In addition, since the structure is such that the electrodes 2 and 3 are adhered to both sides of the varistor body 1, lead wires are connected to the electrodes 2 and 3 when mounting on a circuit board, etc. Must. Therefore, it cannot be used as a surface-mounted component.
そこで、本考案の課題は、上述する従来の問題
点を解決し、サージエネルギー耐量が高く、機械
的強度の大きい量産性に富む面実装タイプのチツ
プ状バリスタを提供することである。 Therefore, an object of the present invention is to solve the above-mentioned conventional problems and provide a surface-mount type chip-shaped varistor that has high surge energy resistance, high mechanical strength, and is easy to mass-produce.
〈課題を解決するための手段〉
上述した課題を解決するため、本考案に係るバ
リスタは、板状に形成されたバリスタ素体の厚み
方向の両面に電極を形成し、電極のそれぞれの面
上に、前記電極より充分に厚い金属端子を面接触
させて接合したバリスタであつて、
前記バリスタ素体の外周縁及び前記金属端子の
外周縁がほぼ同一平面上に位置し、全体として六
面体状となつていること
を特徴とする。<Means for Solving the Problems> In order to solve the above-mentioned problems, the varistor according to the present invention has electrodes formed on both sides in the thickness direction of the varistor element body formed in a plate shape, and on each surface of the electrodes. A varistor in which metal terminals that are sufficiently thicker than the electrodes are joined in surface contact, wherein the outer periphery of the varistor element body and the outer periphery of the metal terminal are located on substantially the same plane, and the whole has a hexahedral shape. It is characterized by being mellow.
〈作用〉
板状に形成されたバリスタ素体の厚み方向の両
面に電極を形成し、電極のそれぞれの面上に、電
極より充分に厚い金属端子を面接触させて接合し
てあるので、金属端子が放熱体となり、放熱性が
向上する。また、金属端子の持つ熱容量により、
全体としての熱容量が増大する。このため、サー
ジエネルギー耐量が増大する。しかも、機械的強
度の弱いバリスタ素体を、その両面側から金属端
子で補強した構造となるので、機械的強度が増大
する。<Function> Electrodes are formed on both sides of the plate-shaped varistor body in the thickness direction, and metal terminals that are sufficiently thicker than the electrodes are bonded to each surface of the electrodes in surface contact. The terminal becomes a heat sink, improving heat dissipation. In addition, due to the heat capacity of the metal terminal,
Overall heat capacity increases. Therefore, surge energy resistance increases. Moreover, since the varistor body, which has low mechanical strength, is reinforced with metal terminals from both sides, the mechanical strength is increased.
また、バリスタ素体の外周縁及び金属端子の外
周縁がほぼ同一平面上に位置しているので、回路
基板等に実装する場合、金属端子が横方向両側に
位置するように配置し、金属端子を端子電極とし
て兼用し、回路基板等に直接ボンデイングし得る
面実装タイプのチツプ部品が得られる。しかも、
全体として六面体状となつているので、バリスタ
素体の外周縁及び金属端子の外周縁の位置する４
つの面の何れをも、取付面として利用できる。即
ち、バリスタ素体の外周縁及び金属端子の外周縁
の位置する４つの面に関しては実装方向性がな
い。このため、方向性確認作業が殆ど不要にな
り、実装作業が容易になる。 In addition, since the outer periphery of the varistor body and the outer periphery of the metal terminals are located on almost the same plane, when mounting it on a circuit board etc., the metal terminals should be arranged so that they are located on both sides in the horizontal direction, and A surface-mount type chip component can be obtained which can also be used as a terminal electrode and can be directly bonded to a circuit board or the like. Moreover,
Since it has a hexahedral shape as a whole, the outer periphery of the varistor body and the outer periphery of the metal terminal are located at the 4
Either side can be used as a mounting surface. That is, there is no mounting directionality regarding the four surfaces on which the outer peripheral edge of the varistor body and the outer peripheral edge of the metal terminal are located. Therefore, there is almost no need to check the directionality, and the mounting work becomes easier.
更に、全体として六面体状となつているので、
製造に当り、大面積の平板状バリスタの両面に金
属端子となる金属板を接合した後、これを縦及び
横に分割する製造工程を経て製造できる。このた
め、量産性が高くなる。 Furthermore, since it has a hexahedral shape as a whole,
In manufacturing, metal plates serving as metal terminals are bonded to both sides of a large-area flat varistor, and then the varistor is divided vertically and horizontally. Therefore, mass productivity is improved.
〈実施例〉
第１図は本考案に係るバリスタの断面図であ
り、板状に形成されたバリスタ素体１の厚み方向
の両面に電極２，３を被着形成すると共に、電極
２，３のそれぞれに対して、金属端子４及び５を
面接触させて接合した構造となつている。バリス
タ素体１の外周縁及び金属端子４，５の外周縁が
ほぼ同一平面上に位置し、全体として六面体状と
なつている。<Example> FIG. 1 is a cross-sectional view of a varistor according to the present invention, in which electrodes 2 and 3 are adhered and formed on both sides in the thickness direction of a varistor body 1 formed in a plate shape. The metal terminals 4 and 5 are bonded to each other in surface contact with each other. The outer periphery of the varistor body 1 and the outer peripheries of the metal terminals 4 and 5 are located on substantially the same plane, and the whole has a hexahedral shape.
金属端子４，５は銅または黄銅などの熱伝導
性、電気伝導性に優れた金属材料よりなるもの
で、接合端面の面積が電極２，３の面積と略等し
く、厚みが電極２，３より充分に厚い六面体状ブ
ロツクとし、電極２，３の略全面を覆うようにし
て接合してある。電極２，３に対する接合に当つ
ては導電性接着剤を使用する。金属端子４，５の
表面にはCr、Sn等のメツキを施すことが望まし
い。バリスタ素体１や電極２，３は従来より知ら
れているものによつて形成できる。 The metal terminals 4 and 5 are made of a metal material with excellent thermal conductivity and electrical conductivity, such as copper or brass. It is made into a sufficiently thick hexahedral block and is bonded to cover substantially the entire surface of the electrodes 2 and 3. A conductive adhesive is used for bonding to the electrodes 2 and 3. It is desirable that the surfaces of the metal terminals 4 and 5 be plated with Cr, Sn, or the like. The varistor body 1 and the electrodes 2 and 3 can be formed by conventionally known materials.
上述のように、板状に形成されたバリスタ素体
１の厚み方向の両面に電極２，３を形成し、電極
２，３のそれぞれの面上に、電極２，３より充分
に厚い金属端子４，５を面接触させて接合させて
あるので、金属端子４，５が放熱体となり、放熱
性が良好になると共に、熱容量が大きくなり、サ
ージエネルギー耐量が増大する。しかも、機械的
強度の弱いバリスタ素体１を、その厚み方向の両
側から金属端子４，５でサンドイツチして補強し
た構造となるので、機械的強が増大し、バリスタ
素体１の破損が防止される。 As described above, electrodes 2 and 3 are formed on both sides in the thickness direction of the varistor body 1 formed in a plate shape, and metal terminals that are sufficiently thicker than the electrodes 2 and 3 are formed on each surface of the electrodes 2 and 3. Since the metal terminals 4 and 5 are joined in surface contact, the metal terminals 4 and 5 act as a heat dissipation body, which improves heat dissipation, increases heat capacity, and increases surge energy resistance. In addition, the structure is such that the varistor element 1, which has weak mechanical strength, is reinforced by sandwiching metal terminals 4 and 5 from both sides in the thickness direction, increasing mechanical strength and preventing damage to the varistor element 1. be done.
また、バリスタ素体１の外周縁及び金属端子
４，５の外周縁がほぼ同一平面上に位置している
ので、回路基板等に実装する場合、金属端子４，
５が横方向両側に位置するように配置し、金属端
子４，５を端子電極として兼用し、回路基板等に
直接ボンデイングし得る面実装タイプのチツプ部
品となる。しかも、全体として六面体状となつて
いるので、バリスタ素体１の外周縁及び金属端子
４，５の外周縁の位置する４つの面の何れをも、
取付面として利用でき、それらの方向性確認作業
が不要であり、実装作業が容易になる。 Furthermore, since the outer periphery of the varistor body 1 and the outer peripheries of the metal terminals 4 and 5 are located on almost the same plane, when mounting on a circuit board or the like, the metal terminals 4,
The metal terminals 4 and 5 are arranged so as to be located on both sides in the lateral direction, and the metal terminals 4 and 5 are also used as terminal electrodes, resulting in a surface-mount type chip component that can be directly bonded to a circuit board or the like. Moreover, since it has a hexahedral shape as a whole, any of the four surfaces on which the outer periphery of the varistor body 1 and the outer peripheries of the metal terminals 4 and 5 are located,
It can be used as a mounting surface, and there is no need to check their orientation, making mounting work easier.
第２図Ａ〜Ｃは上記実施例のバリスタの製造方
法を示す図である。まず第２図Ａに示すように、
バリスタ素体１の両面に電極２，３を被着形成し
たバリスタの両側に金属端子４，５を面接触させ
て接合した後、第２図Ｂに示すように、切断線Ｘ
−Ｘ、Ｙ−Ｙで切断する。これにより、第２図Ｃ
に示すようなチツプ状のバリスタを、量産性よく
製造でできる。 FIGS. 2A to 2C are diagrams showing a method of manufacturing the varistor of the above embodiment. First, as shown in Figure 2A,
After bonding metal terminals 4 and 5 in surface contact with both sides of the varistor with electrodes 2 and 3 formed on both sides of the varistor body 1, as shown in FIG. 2B, the cutting line
Cut at -X, Y-Y. As a result, Fig. 2C
Chip-shaped varistors as shown in the figure can be easily manufactured in mass production.
〈考案の効果〉
以上述べたように、本考案によれば、次のよう
な効果が得られる。<Effects of the invention> As described above, according to the present invention, the following effects can be obtained.
(a) 板状に形成されたバリスタ素体の厚み方向の
両面に電極を形成し、電極のそれぞれの面上
に、電極より充分に厚い金属端子を面接触させ
て接合したから、サージエネルギー耐量が大き
く、機械的強度に優れたバリスタを提供でき
る。(a) Electrodes are formed on both sides of the plate-shaped varistor body in the thickness direction, and metal terminals that are sufficiently thicker than the electrodes are bonded to each surface of the electrodes in surface contact, so the surge energy resistance is low. It is possible to provide a varistor with a large diameter and excellent mechanical strength.
(b) バリスタ素体の外周縁及び金属端子の外周縁
がほぼ同一平面上に位置しているので、金属端
子を端子電極として兼用し、回路基板等に直接
ボンデイングし得る面実装タイプのチツプ状バ
リスタを提供できる。(b) Since the outer periphery of the varistor body and the outer periphery of the metal terminal are located on almost the same plane, the metal terminal can also be used as a terminal electrode and can be bonded directly to a circuit board, etc. as a surface-mount type chip. Can provide barista.
(c) 全体として六面体状となつているので、バリ
スタ素体の外周縁及び金属端子の外周縁の位置
する４つの面の何れをも、取付面として利用で
き、方向性確認作業が不要で、実装作業の容易
な面実装タイプのチツプ状バリスタを提供でき
る。(c) Since the overall shape is hexahedral, any of the four surfaces on which the outer periphery of the varistor body and the outer periphery of the metal terminal are located can be used as a mounting surface, eliminating the need for direction confirmation work. It is possible to provide a surface-mount type chip-shaped varistor that can be easily mounted.
(d) 全体として六面体状となつているので、量産
性に富む面実装タイプのチツプ状バリスタを提
供できる。(d) Since it has a hexahedral shape as a whole, it is possible to provide a surface-mount type chip-shaped varistor that is highly mass-producible.
第１図は本考案に係るバリスタの断面図、第２
図Ａ〜Ｃは同じくその製造工程を示す図、第３図
は従来のバリスタの断面図である。
１……バリスタ素体、２，３……電極、４，５
……金属端子。
Fig. 1 is a cross-sectional view of the varistor according to the present invention, Fig. 2 is a sectional view of the varistor according to the present invention;
Figures A to C are views showing the manufacturing process, and Figure 3 is a sectional view of a conventional varistor. 1... Varistor element body, 2, 3... Electrode, 4, 5
...Metal terminal.
Claims (1)
両面に電極を形成し、電極のそれぞれの面上
に、前記電極より充分に厚い金属端子を面接触
させて接合したバリスタであつて、 前記バリスタ素体の外周縁及び前記金属端子
の外周縁がほぼ同一平面上に位置し、全体とし
て六面体状となつていること を特徴とするバリスタ。 (2) 前記金属端子は、導電性接着剤によつて前記
電極に接合されていることを特徴とする実用新
案登録請求の範囲第１項に記載のバリスタ。 (3) 前記金属端子は、表面がメツキされているこ
とを特徴とする実用新案登録請求の範囲第１項
または第２項に記載のバリスタ。[Claims for Utility Model Registration] (1) Electrodes are formed on both sides in the thickness direction of a varistor body formed in a plate shape, and a metal terminal that is sufficiently thicker than the electrodes is placed in surface contact with each surface of the electrodes. What is claimed is: 1. A varistor in which an outer periphery of the varistor body and an outer periphery of the metal terminal are located on substantially the same plane, and the varistor has a hexahedral shape as a whole. (2) The varistor according to claim 1, wherein the metal terminal is bonded to the electrode with a conductive adhesive. (3) The varistor according to claim 1 or 2, wherein the metal terminal has a plated surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985167670U JPH0351922Y2 (en) | 1985-10-31 | 1985-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985167670U JPH0351922Y2 (en) | 1985-10-31 | 1985-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6276506U JPS6276506U (en) | 1987-05-16 |
| JPH0351922Y2 true JPH0351922Y2 (en) | 1991-11-08 |
Family
ID=31099817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985167670U Expired JPH0351922Y2 (en) | 1985-10-31 | 1985-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351922Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5233400B2 (en) * | 2008-05-13 | 2013-07-10 | Ｔｄｋ株式会社 | Barista |
| JP5304772B2 (en) * | 2010-12-06 | 2013-10-02 | Ｔｄｋ株式会社 | Chip varistor and method of manufacturing chip varistor |
| JP5696623B2 (en) * | 2011-08-29 | 2015-04-08 | Tdk株式会社 | Chip varistor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS568164U (en) * | 1979-07-02 | 1981-01-24 |
-
1985
- 1985-10-31 JP JP1985167670U patent/JPH0351922Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS568164U (en) * | 1979-07-02 | 1981-01-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6276506U (en) | 1987-05-16 |
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