JPS6244515Y2 - - Google Patents
Info
- Publication number
- JPS6244515Y2 JPS6244515Y2 JP1981147106U JP14710681U JPS6244515Y2 JP S6244515 Y2 JPS6244515 Y2 JP S6244515Y2 JP 1981147106 U JP1981147106 U JP 1981147106U JP 14710681 U JP14710681 U JP 14710681U JP S6244515 Y2 JPS6244515 Y2 JP S6244515Y2
- Authority
- JP
- Japan
- Prior art keywords
- multilayer ceramic
- ceramic capacitor
- fuse
- external electrode
- deposited
- 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
- 239000003985 ceramic capacitor Substances 0.000 claims description 19
- 229920002379 silicone rubber Polymers 0.000 claims description 7
- 239000004945 silicone rubber Substances 0.000 claims description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 239000012212 insulator Substances 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims 2
- 230000007246 mechanism Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は積層セラミツクコンデンサ特にヒユー
ズ内蔵型コンデンサに関するものである。積層セ
ラミツクコンデンサは、電子機器及び回路の高速
化、小型化を高信頼度で促進する上で不可欠な部
品として近年ますますその需要が高まつている。[Detailed Description of the Invention] The present invention relates to a multilayer ceramic capacitor, particularly a fuse built-in capacitor. Demand for multilayer ceramic capacitors has been increasing in recent years as they are essential components for promoting high speed and miniaturization of electronic devices and circuits with high reliability.
しかし、積層セラミツクコンデンサは破壊した
場合自己回復機能がなく短絡状態に固定される。
そのため、他の電子機器及び部品を保護するため
積層セラミツクコンデンサ内部にヒユーズ機構を
有しているものもある。 However, if a multilayer ceramic capacitor breaks down, it has no self-recovery function and is fixed in a short-circuited state.
Therefore, some multilayer ceramic capacitors have a fuse mechanism inside them to protect other electronic devices and components.
従来のヒユーズ機構は、その製造上極めて複雑
かつ、困難でその為高価なものが多かつた。 Conventional fuse mechanisms are extremely complex and difficult to manufacture, and are therefore often expensive.
本考案の目的はこれらの欠点を除去するため製
造上容易でかつ、廉価なヒユーズ内蔵型積層セラ
ミツクコンデンサを提供することにある。 An object of the present invention is to provide a multilayer ceramic capacitor with a built-in fuse that is easy to manufacture and inexpensive in order to eliminate these drawbacks.
本考案は、積層セラミツクコンデンサの外部電
極の片方に該外部電極とリード端子の間にヒユー
ズ機能を有する絶縁体を挿入し、前記両者を電気
的に接続して一体化したことを特徴とするヒユー
ズ内蔵型の積層セラミツクコンデンサである。 The present invention provides a fuse characterized in that an insulator having a fuse function is inserted into one of the external electrodes of a multilayer ceramic capacitor between the external electrode and the lead terminal, and the two are electrically connected and integrated. This is a built-in multilayer ceramic capacitor.
以下本考案の１実施例を図面について説明す
る。第１図に於て、１は、14mm×12mm×４mmの形
状で静電容量80μＦを有する積層セラミツクコン
デンサで、２及び２′はその外部電極を示す。３
は、シリコンゴムでその表面に帯状のスズ膜４が
蒸着されているヒユーズ体である。なお、帯状の
スズ膜４は裏面にも同様に蒸着されている。３は
シリコンゴムで12mm×４mm×１mmの形状で電気的
絶縁度が良好であり、且つ、弾力性があり耐熱性
もある。４はシリコンゴム３の上に蒸着された幅
0.5mm厚さ５μｍのスズ蒸着膜で、十分な電気伝
導度を有しており、同時に大電流が流れると溶解
するヒユーズ機能を有する薄膜である。５及び
５′は厚さ0.7mmのリード端子である。積層セラミ
ツクコンデンサの外部電極の片方２とリード端子
の片方５との間に３および４よりなるヒユーズ体
を当てがいこれら３者を押しつけたままシリコン
樹脂で固定し、電気的に導通された状態とする。
なお、外部電極２′とリード端子５′とは半田付け
で接続されている。以上のようにして１体化され
たものをケース６に挿入し、樹脂でモールドす
る。 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a laminated ceramic capacitor having a size of 14 mm x 12 mm x 4 mm and a capacitance of 80 μF, and 2 and 2' indicate its external electrodes. 3
The fuse body is made of silicone rubber and has a band-shaped tin film 4 deposited on its surface. Note that the strip-shaped tin film 4 is similarly deposited on the back surface. 3 is silicone rubber with a shape of 12 mm x 4 mm x 1 mm, and has good electrical insulation, elasticity, and heat resistance. 4 is the width deposited on silicone rubber 3
It is a tin vapor-deposited film with a thickness of 0.5 mm and 5 μm, which has sufficient electrical conductivity and also has a fuse function that melts when a large current flows. 5 and 5' are lead terminals with a thickness of 0.7 mm. A fuse body consisting of 3 and 4 is placed between one side 2 of the external electrode of the multilayer ceramic capacitor and one side 5 of the lead terminal, and these three parts are pressed together and fixed with silicone resin to make them electrically conductive. do.
Note that the external electrode 2' and the lead terminal 5' are connected by soldering. The unit integrated as described above is inserted into the case 6 and molded with resin.
本考案は上述の如き構造を有するため蒸着膜４
は過大な電流が流れると溶解して外部電極２とリ
ード端子５が電気的に絶縁され外部の電子機器及
び部品を保護することができる。 Since the present invention has the structure as described above, the vapor deposited film 4
melts when an excessive current flows, and the external electrode 2 and lead terminal 5 are electrically insulated, thereby protecting external electronic equipment and components.
実際の積層セラミツクコンデンサが破壊すると
きは徐々に絶縁抵抗が低下し、ついには短絡する
場合もあるが、一般的にはセラミツク内部の熱暴
走により瞬時に短絡する場合が多い。本実施例の
実験結果では厚さ１mmのシリコンゴム表面に膜厚
５μｍ幅0.5mmのスズを蒸着させたもので30Aの
電流に対して１秒以内に溶断した。金属の蒸着は
その蒸着厚及び形状について、かなり自由に制御
することができるため所望のヒユーズ機能を容易
に実現することができる。又、蒸着体及び被蒸着
体も広範囲な材料から選択することが可能であ
る。特にシリコンのような弾力性を必要としない
構造のものでは、そのかわりにセラミツク板を使
用することもできる。この場合は蒸着膜を厚くす
ることによつて外部電極との接触には半田付けも
可能である。 When an actual laminated ceramic capacitor breaks down, the insulation resistance gradually decreases, and it may eventually lead to a short circuit, but in general, short circuits occur instantaneously due to thermal runaway inside the ceramic. According to the experimental results of this example, when tin was vapor-deposited with a film thickness of 5 μm and width of 0.5 mm on the surface of silicone rubber with a thickness of 1 mm, it melted within 1 second under a current of 30 A. Since the deposition thickness and shape of the metal can be controlled quite freely, a desired fuse function can be easily achieved. Further, the evaporator and the evaporator can be selected from a wide range of materials. In particular, for structures that do not require elasticity, such as silicone, a ceramic plate may be used instead. In this case, by making the deposited film thicker, it is also possible to solder the contact with the external electrode.
以上述べたごとく、本考案によれば別個に用意
されたヒユーズ機能を有する絶縁体を積層セラミ
ツクコンデンサの何れか一方の外部電極とリード
端子の間に挿入することによつて、ヒユーズ機構
を内蔵した積層セラミツクコンデンサを容易に且
つ廉価に製造することができる。 As described above, according to the present invention, a fuse mechanism is built in by inserting a separately prepared insulator with a fuse function between the external electrode and the lead terminal of either one of the multilayer ceramic capacitors. Multilayer ceramic capacitors can be manufactured easily and at low cost.
第１図は本考案によるヒユーズ内蔵積層セラミ
ツクコンデンサの構成部品を示す。第２図は本考
案によるセラミツクコンデンサの一部を切り欠い
た斜視図を示す。
図において１：積層セラミツクコンデンサ、２
及び２′：積層セラミツクコンデンサの外部電
極、３：シリコンゴム、４：３のシリコンゴムの
上に蒸着された蒸着スズ膜、５，５′：リード端
子、６：収納ケース、７：モールド用樹脂。
FIG. 1 shows the components of a multilayer ceramic capacitor with a built-in fuse according to the present invention. FIG. 2 shows a partially cut away perspective view of a ceramic capacitor according to the present invention. In the figure 1: Multilayer ceramic capacitor, 2
and 2': external electrode of multilayer ceramic capacitor, 3: silicone rubber, 4: vapor-deposited tin film deposited on silicone rubber, 5, 5': lead terminal, 6: storage case, 7: resin for molding. .
Claims (1)
極２と該外部電極２のリード端子５の間に、両
面に通ずるヒユーズ機能を有する導電体４を蒸
着した弾性ある絶縁体３を当接してなる積層セ
ラミツクコンデンサ。 ２ 絶縁体はシリコンゴムでヒユーズ機能を有す
る導電体は帯状のスズ膜である実用新案登録請
求の範囲１項記載の積層セラミツクコンデン
サ。[Claims for Utility Model Registration] 1. An elastic insulator 3 in which a conductor 4 having a fuse function that communicates with both surfaces is deposited between one external electrode 2 of a multilayer ceramic capacitor 1 and a lead terminal 5 of the external electrode 2. A multilayer ceramic capacitor made by contacting the 2. The multilayer ceramic capacitor according to claim 1, wherein the insulator is silicone rubber and the conductor having a fuse function is a band-shaped tin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14710681U JPS5851435U (en) | 1981-10-05 | 1981-10-05 | Multilayer ceramic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14710681U JPS5851435U (en) | 1981-10-05 | 1981-10-05 | Multilayer ceramic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5851435U JPS5851435U (en) | 1983-04-07 |
| JPS6244515Y2 true JPS6244515Y2 (en) | 1987-11-25 |
Family
ID=29939977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14710681U Granted JPS5851435U (en) | 1981-10-05 | 1981-10-05 | Multilayer ceramic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5851435U (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2617904B1 (en) * | 1987-07-09 | 1992-05-22 | Peugeot Aciers Et Outillage | FALCIFORM BLADE FOR PROPELLER AND ITS APPLICATION IN PARTICULAR TO MOTOR FANS FOR AUTOMOBILES |
| JPH0795496B2 (en) * | 1988-04-19 | 1995-10-11 | 日立エーアイシー株式会社 | Monolithic ceramic capacitors |
| JP2021190534A (en) * | 2020-05-28 | 2021-12-13 | Tdk株式会社 | Electronic component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626425A (en) * | 1979-08-09 | 1981-03-14 | Nippon Electric Co | Condenser |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5740507Y2 (en) * | 1975-11-04 | 1982-09-06 |
-
1981
- 1981-10-05 JP JP14710681U patent/JPS5851435U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626425A (en) * | 1979-08-09 | 1981-03-14 | Nippon Electric Co | Condenser |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5851435U (en) | 1983-04-07 |
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