JPS58171811A - Method of producing solid electrolytic condenser - Google Patents
Method of producing solid electrolytic condenserInfo
- Publication number
- JPS58171811A JPS58171811A JP5390282A JP5390282A JPS58171811A JP S58171811 A JPS58171811 A JP S58171811A JP 5390282 A JP5390282 A JP 5390282A JP 5390282 A JP5390282 A JP 5390282A JP S58171811 A JPS58171811 A JP S58171811A
- Authority
- JP
- Japan
- Prior art keywords
- solid electrolytic
- carbon
- layer
- electrolytic capacitor
- manufacturing
- 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
Links
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
- Conductive Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本考案は、固体電解コンデンサの製造方法に関し、特に
、焼結体に設ける陰極層を改良した固体電解コンデンサ
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a solid electrolytic capacitor, and particularly to a solid electrolytic capacitor in which a cathode layer provided on a sintered body is improved.
タンタル等の弁作用金属の粉末からなる焼結体に陽極酸
化等の処理を施して製造した固体電解コンデンサは最高
でも１９ｖ程度の耐圧が低い欠点があり、耐圧不良が多
く、その対策が望まれている。Solid electrolytic capacitors manufactured by applying anodic oxidation to a sintered body made of powder of valve metal such as tantalum have the disadvantage of a low withstand voltage of around 19V at most, and there are many breakdown voltage failures, so countermeasures are desired. ing.
本考案は１以上の点に鑑み、耐圧を向上しうる固体電解
コンデンサの製造方法の提供を目的とするものである。In view of one or more points, the present invention aims to provide a method for manufacturing a solid electrolytic capacitor that can improve the withstand voltage.
本考案は、上記の目的を達成するために、半導体層を設
けた後に１粒径の大きい第１のカーボンを塗布し１次い
で粒径のより小さい第２のカーポ／を塗布することを特
徴とする固体電解コンデンサの製造方法を提供するもの
である。In order to achieve the above object, the present invention is characterized in that after providing a semiconductor layer, a first carbon having a large particle size is applied, and then a second carbon having a smaller particle size is applied. The present invention provides a method for manufacturing a solid electrolytic capacitor.
以下１本発明の実施例を図面に基づいて説明する。An embodiment of the present invention will be described below based on the drawings.
先ず、タンタル線１の先端を引き出すようにしてタンタ
ルの粉末の焼結体２を形成する。このり／タルの焼結体
２をリン酸により化成して１表面に陽極酸化皮膜５を形
成する。次に、硝酸マンカ゛ン溶液中に浸漬して二酸化
マンガン層４を設ける。First, the tip of the tantalum wire 1 is pulled out to form a sintered body 2 of tantalum powder. The sintered body 2 of this resin/tal is chemically treated with phosphoric acid to form an anodic oxide film 5 on one surface. Next, a manganese dioxide layer 4 is provided by immersing it in a manganese nitrate solution.
二酸化マンガンからなる半導体層を設けた後、先づ粒径
が３μ以上の第１のカーボンを二酸化マンガン層４上に
塗布して＃１１のカーボン層５を設ける。次いで１粒径
が５μ未満の第２のカーボンを塗布して第２のカーボン
層６を設ける。これ等の９を接続し、タンタル線１には
陽極リード線１０を接続して、樹脂外装置１を施す。After forming a semiconductor layer made of manganese dioxide, first carbon having a particle size of 3 μm or more is coated on the manganese dioxide layer 4 to form a #11 carbon layer 5. Next, a second carbon layer 6 is provided by applying a second carbon having a grain size of less than 5 μm. These 9 are connected, the anode lead wire 10 is connected to the tantalum wire 1, and the resin outer device 1 is applied.
すなわち、陰極層としてカーボン層を塗布しないと、耐
圧不良が大幅に減少するが、これはカーボン粒子が半導
体層に入りこみ、半導体層の抵抗を降下させ耐圧が低下
する原因となっていることを示している。本発明によれ
ば、二酸化マンガン層４に直接接触する方に粒径の大き
い第１のカーボンを塗布しており、そのために、カーボ
ン粒子が二酸化マンガン層４に侵入し難く、二酸化マン
ガン層４の抵抗が降下するのが防止される。そして第１
のカーボン層５の上にさらに粒径のより小さい第２のカ
ーボン層６を設けて、カーボン層５及び６全体の厚さを
、はぼ従来通りとしている。In other words, if a carbon layer is not applied as a cathode layer, breakdown voltage defects are significantly reduced, but this indicates that carbon particles enter the semiconductor layer, lowering the resistance of the semiconductor layer and causing a decrease in breakdown voltage. ing. According to the present invention, the first carbon having a larger particle size is coated on the side that is in direct contact with the manganese dioxide layer 4, so that carbon particles are difficult to penetrate into the manganese dioxide layer 4, and the carbon particles are less likely to enter the manganese dioxide layer 4. The resistance is prevented from dropping. and the first
A second carbon layer 6 having a smaller particle size is further provided on the carbon layer 5, and the overall thickness of the carbon layers 5 and 6 is kept almost the same as before.
それ故、 ｔａｎδの増加を防止できる。Therefore, an increase in tan δ can be prevented.
以上の通り１本発明によれば、半導体層の抵抗降下を防
止してコンデンサの耐圧不良を低減し５る固体電解コン
デンサの製造方法が得られる。As described above, according to the present invention, there is provided a method for manufacturing a solid electrolytic capacitor that prevents a drop in resistance of a semiconductor layer and reduces breakdown voltage defects of the capacitor.
図は本考案の実施例により製造した固体電解コンデンサ
の正面断面図を示す。
２・・・・・・焼結体、３・・・・・・陽極酸化皮嘆。
４・・・・・・二酸化マンガン層。
５・・・・・・第１のカーボン層。
６・・・・・・第２のカーボン層、７・・・・・・銀ペ
ースト層。
８・・・・・・半田層、１１・・・・・・樹脂外Ｍ。
特許出願人 日立コンデンサ株式会社The figure shows a front sectional view of a solid electrolytic capacitor manufactured according to an embodiment of the present invention. 2...Sintered body, 3...Anodized skin. 4...Manganese dioxide layer. 5...First carbon layer. 6... Second carbon layer, 7... Silver paste layer. 8... Solder layer, 11... Outer resin M. Patent applicant Hitachi Capacitor Co., Ltd.
Claims (3)
皮膜を形成し、半導体層及び陰極層を順次設けた固体電
解コンデンサの製造方法において、半導体層を設けた後
に１粒径の大きい第１のカーボンを塗布し１次いで粒径
のより小さい第２のカーボンを塗布することを特徴とす
る固体電解コンデンサの製造方法。(1) In a method for manufacturing a solid electrolytic capacitor in which an anodized film is formed on a sintered body made of valve metal powder, and a semiconductor layer and a cathode layer are sequentially provided, after the semiconductor layer is provided, 1. A method for manufacturing a solid electrolytic capacitor, which comprises applying first carbon, and then applying second carbon having a smaller particle size.
の範囲第１項記載の固体電解コンデンサの製造方法。(2) The method for manufacturing a solid electrolytic capacitor according to claim 1, wherein the first carbon has a particle size of 3 μ or more.
ンサの製造方法。(3) The particle size of the second carbon is less than 5μ. A method for manufacturing a solid electrolytic capacitor according to claims 1 and 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5390282A JPS58171811A (en) | 1982-04-02 | 1982-04-02 | Method of producing solid electrolytic condenser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5390282A JPS58171811A (en) | 1982-04-02 | 1982-04-02 | Method of producing solid electrolytic condenser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58171811A true JPS58171811A (en) | 1983-10-08 |
| JPS6321335B2 JPS6321335B2 (en) | 1988-05-06 |
Family
ID=12955644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5390282A Granted JPS58171811A (en) | 1982-04-02 | 1982-04-02 | Method of producing solid electrolytic condenser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58171811A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02265234A (en) * | 1989-04-05 | 1990-10-30 | Matsushita Electric Ind Co Ltd | Solid-state electrolytic capacitor |
-
1982
- 1982-04-02 JP JP5390282A patent/JPS58171811A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02265234A (en) * | 1989-04-05 | 1990-10-30 | Matsushita Electric Ind Co Ltd | Solid-state electrolytic capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6321335B2 (en) | 1988-05-06 |
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