JPH0210802A - Varistor - Google Patents
VaristorInfo
- Publication number
- JPH0210802A JPH0210802A JP63161719A JP16171988A JPH0210802A JP H0210802 A JPH0210802 A JP H0210802A JP 63161719 A JP63161719 A JP 63161719A JP 16171988 A JP16171988 A JP 16171988A JP H0210802 A JPH0210802 A JP H0210802A
- Authority
- JP
- Japan
- Prior art keywords
- varistor
- whole element
- resistance
- glass
- resistance element
- 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
Links
- 239000011521 glass Substances 0.000 claims abstract description 13
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011787 zinc oxide Substances 0.000 claims abstract description 3
- 238000007740 vapor deposition Methods 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 abstract description 2
- 238000010894 electron beam technology Methods 0.000 abstract description 2
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 238000001771 vacuum deposition Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、各種電子機器のサージ・ノイズ及び静電吸収
に利用されるバリスタに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a varistor used for absorbing surge noise and static electricity in various electronic devices.
従来の技術
従来、この種のバリスタは耐湿性などの耐環境性向上の
ために、エポキシ系樹脂などで厚く被覆していた。Prior Art Conventionally, this type of varistor has been coated with a thick layer of epoxy resin to improve moisture resistance and other environmental resistance.
発明が解決しようとする課題
このような従来の構成では、エポキシ系樹脂などを厚く
被覆しなければ耐環境性を満足しない。Problems to be Solved by the Invention In such a conventional structure, environmental resistance cannot be satisfied unless a thick coating of epoxy resin or the like is applied.
一方、近年、角板状の小型リードレヌバリヌタが提案さ
れてきており、その使用方法などの点から外装樹脂など
で厚く被覆することはできない。On the other hand, in recent years, small rectangular plate-shaped reed renubers have been proposed, but due to the way they are used, it is not possible to cover them thickly with an exterior resin or the like.
また、ノルダーレジストなどで薄く被覆する方法も考え
られるが、この場合は耐環境性を満足しない。さらに、
ガラスをペースト状などにし、塗布後熱処理によってガ
ラヌ層で被覆する方法では、熱処理によシガラスが抵抗
素子内部に拡散するなど、バリスタ特性に悪影響を及ぼ
すおそれがあるなどという問題があった。Alternatively, a method of thinly coating with a norder resist or the like may be considered, but this method does not satisfy the environmental resistance. moreover,
A method in which glass is made into a paste or the like and coated with a galanic layer by heat treatment after application has the problem that the heat treatment causes the glass to diffuse into the resistor element, which may have an adverse effect on the varistor characteristics.
本発明はこのような問題点を解決する゛もので、耐環境
性に優れた小型のバリスタを提供することを目的とする
ものである。The present invention is intended to solve these problems, and it is an object of the present invention to provide a small varistor with excellent environmental resistance.
課題を解決するための手段
この問題点を解決するために本発明は、外部接続用部分
を除いた素子全体を蒸着によりガラスで被覆したもので
ある。Means for Solving the Problems In order to solve this problem, the present invention covers the entire device except for the external connection portions with glass by vapor deposition.
作用
この構成により、蒸着によりガラスで被覆するため、抵
抗素子に影響なく、素子全体を薄く均一に被覆すること
ができることとなシ、耐環境性に優れたものとなる。Function: With this structure, since the glass is coated by vapor deposition, the entire element can be coated thinly and uniformly without affecting the resistive element, and it has excellent environmental resistance.
実施例
以）、本発明の一実施例について図面を参照し、なから
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings.
第１図は本発明の一実施例によるバリスタの斜視図であ
り、第２図は断面図である。図に１・いて、１は酸化ｉ
’ｒｂ鉛を主成分とする電圧非直線抵抗素子であり、２
は”ｆＥ極、３は蒸着によるガラス層である。FIG. 1 is a perspective view of a varistor according to an embodiment of the present invention, and FIG. 2 is a sectional view. In the figure, 1 is oxidized i.
'rbIt is a voltage nonlinear resistance element whose main component is lead, and 2
is a "fE pole", and 3 is a glass layer formed by vapor deposition.
次に、その具体的な製造方法について説明する。Next, a specific manufacturing method thereof will be explained.
捷ず、酸化亜鉛を主成分とし、非直線性を示す数種の添
加物を加え、通常の窯業的手法により角板状の’Ｊ電圧
非直線抵抗素子を作製する。この電圧非直線抵抗素子１
に、一対の対向面に端面全通して連絡する電極２を形成
する。この抵抗素子１に外部接続用電極部分として端面
を残して、電Ｔビーム加熱による真空蒸着により、素子
全体に厚さ約１０１１ｍ程度のガラス層３を蒸着し、ｖ
１階した。。A rectangular plate-shaped 'J voltage non-linear resistance element is produced by using ordinary ceramic techniques using zinc oxide as the main component and adding several kinds of additives exhibiting non-linearity. This voltage nonlinear resistance element 1
Then, an electrode 2 is formed on the pair of opposing surfaces, communicating through the entire end surface. A glass layer 3 with a thickness of about 1011 m is deposited on the entire element by vacuum evaporation using electric T-beam heating, leaving the end face as an electrode part for external connection on this resistance element 1.
I went to the first floor. .
このようにして得られた試料と、ソルダーレジストによ
り被覆した試料について、耐環境試験を行った。その結
果を下記の表に示す。ここで、行ツタ試１験ハ、−４０
°Ｃ〜−１５０”Ｃ１００サイクルのヒートサイクル試
験と、３気圧−２４時間のプレッシャークツカー試験で
ある。Environmental resistance tests were conducted on the samples thus obtained and the samples coated with solder resist. The results are shown in the table below. Here, the row ivy test 1 is -40
A heat cycle test of 100 cycles from °C to -150''C and a pressure courier test of 3 atm for 24 hours.
本発明は、耐環境試験を行った結果、上記表に示すよう
に外観に異常もなく、バリスタ電圧の変化率も小さく、
耐環境性を満足するものであることが解る。As a result of the environmental resistance test of the present invention, as shown in the above table, there was no abnormality in appearance, the rate of change in varistor voltage was small,
It can be seen that the product satisfies environmental resistance.
なお、一実施例において、蒸着方法は電子ビームによる
真空蒸着としたが、これは他の蒸着法でもよい。In one embodiment, the vapor deposition method was vacuum vapor deposition using an electron beam, but other vapor deposition methods may be used.
発明の効果
以上のように本発明によれば、素子全体に薄くガラス層
を形成することができる。また、熱処理の必要もなく、
耐環境性に極めて優れたバリスタが提供でき、特に小型
のリードレスバリスタに用いて有効なものである。Effects of the Invention As described above, according to the present invention, a thin glass layer can be formed over the entire device. Also, there is no need for heat treatment.
A varistor with extremely excellent environmental resistance can be provided, and is particularly effective for use in small leadless varistors.
第１図は本発明の一実施例によるバリスタを示す斜視図
、第２図は同断面図である。
１・・・・・・電圧非直線性抵抗素子、２・・・・・・
電極、３・・・・・・蒸着によるガラス層。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名菓
第
図
図
／ −ｍ−電圧作直線抵抗素子
２− 電 重
３−・−１１：よるガラス１FIG. 1 is a perspective view showing a varistor according to an embodiment of the present invention, and FIG. 2 is a sectional view thereof. 1... Voltage nonlinear resistance element, 2...
Electrode, 3...Glass layer by vapor deposition. Name of agent Patent attorney Toshio Nakao and 1 other famous figure / -m- Voltage operation linear resistance element 2- Electric weight 3-・-11: Yoru glass 1
Claims (1)
与し、前記電極の外部接続用電極部分を除いた前記抵抗
素子の全体を蒸着によりガラスで被覆したことを特徴と
するバリスタ。A varistor characterized in that an electrode is provided to a voltage non-linear resistance element mainly composed of zinc oxide, and the entire resistance element except for an external connection electrode part of the electrode is coated with glass by vapor deposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63161719A JPH0210802A (en) | 1988-06-29 | 1988-06-29 | Varistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63161719A JPH0210802A (en) | 1988-06-29 | 1988-06-29 | Varistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0210802A true JPH0210802A (en) | 1990-01-16 |
Family
ID=15740580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63161719A Pending JPH0210802A (en) | 1988-06-29 | 1988-06-29 | Varistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210802A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6565506B2 (en) | 2000-07-28 | 2003-05-20 | Olympus Optical Co., Ltd. | Endoscope |
| US8911359B2 (en) | 2012-03-08 | 2014-12-16 | Olympus Medical Systems Corp. | Guide sheath and medical system |
-
1988
- 1988-06-29 JP JP63161719A patent/JPH0210802A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6565506B2 (en) | 2000-07-28 | 2003-05-20 | Olympus Optical Co., Ltd. | Endoscope |
| US8911359B2 (en) | 2012-03-08 | 2014-12-16 | Olympus Medical Systems Corp. | Guide sheath and medical system |
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