JPH0562864A - Solid electrolytic capacitor and its manufacture - Google Patents

Solid electrolytic capacitor and its manufacture

Info

Publication number
JPH0562864A
JPH0562864A JP22034691A JP22034691A JPH0562864A JP H0562864 A JPH0562864 A JP H0562864A JP 22034691 A JP22034691 A JP 22034691A JP 22034691 A JP22034691 A JP 22034691A JP H0562864 A JPH0562864 A JP H0562864A
Authority
JP
Japan
Prior art keywords
solid electrolytic
electrolytic capacitor
capacitor
metal case
capacitor 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.)
Granted
Application number
JP22034691A
Other languages
Japanese (ja)
Other versions
JP2714281B2 (en
Inventor
Katsunori Minatomi
勝則 水富
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP22034691A priority Critical patent/JP2714281B2/en
Publication of JPH0562864A publication Critical patent/JPH0562864A/en
Application granted granted Critical
Publication of JP2714281B2 publication Critical patent/JP2714281B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

PURPOSE:To manufacture a solid electrolytic capacitor wherein its aging operation can be executed with good operability and its leakage current characteristic is excellent even after a soldering operation by a method wherein the bottom face of a metal case for the solid electrolytic capacitor which uses a TCNQ salt as a solid electrolyte is covered with a fluorinated carbon resin. CONSTITUTION:The title capacitor is composed of the following: a capacitor element 6 in which an anode foil and a cathode foil have been wound via a separator; a TCNQ salt 8 which has been cooled and solidified after the capacitor element 6 has been impregnated; and a metal case 7 which seals the capacitor element. In such a solid electrolytic capacitor, the bottom face of the metal case 7 is covered with a fluorinated carbon resin 11. When the solid electrolytic capacitor is manufactured, the bottom face of the metal case 7 is covered with the fluorinated carbon resin 11 and the capacitor is immersed in a molten solder 13 at a temperature of 150 deg.C or higher and an aging operation is performed. At this time, a rated voltage is applied across an anode lead 5 for the capacitor and the molten solder 13, and the aging operation is performed for about 30 seconds.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は固体電解質として、TC
NQ錯塩を用いた固体電解コンデンサに関するものであ
る。
The present invention relates to a solid electrolyte, TC
The present invention relates to a solid electrolytic capacitor using NQ complex salt.

【0002】[0002]

【従来の技術】電解質としてTCNQ錯塩を用いた有機
半導体固体電解コンデンサに関しては、本願出願人が既
に種々提案している。すなわち、特開昭58−1914
14号(H01G 9/02)等に開示されているN位
をアルキル基で置換したイソキノリンとのTCNQ錯塩
を用いた固体電解コンデンサは、特に優れた高周波特性
を持っているため、スイッチング電源用などに広く採用
されているが、近年、機器の小型化の必要性から、この
種のコンデンサも表面実装用部品(チップ部品)として
の対応を迫られている。
The applicant of the present invention has already proposed various organic semiconductor solid electrolytic capacitors using a TCNQ complex salt as an electrolyte. That is, JP-A-58-1914
No. 14 (H01G 9/02) and the like, a solid electrolytic capacitor using a TCNQ complex salt with isoquinoline in which the N-position is substituted with an alkyl group has particularly excellent high-frequency characteristics, and therefore is used for switching power supplies, etc. However, in recent years, due to the need for miniaturization of equipment, this type of capacitor is also required to be used as a surface mounting component (chip component).

【0003】しかしながら、上述の従来技術によるコン
デンサにおいては、表面実装用部品として必須の、半田
付け時の熱ストレス(通常230℃)には耐えられず、
著しい漏れ電流増大等の特性劣化を招くという欠点があ
った。
However, the above-mentioned conventional capacitor cannot withstand the thermal stress (usually 230 ° C.) at the time of soldering, which is indispensable for surface mounting parts,
There is a drawback in that the characteristics such as a remarkable increase in leakage current are brought about.

【0004】この欠点を改善するために、本願出願人
は、150℃以上の温度で電圧処理(エージング)を行
うことを提案している。すなわち、特開平2−2788
07号公報(H01G 9/04)に記載されているよ
うに、コンデンサを、150℃以上の所定の温度に加熱
した円筒状穴あき熱板に収納し、定格電圧を印加しなが
らエージングを行うものであり、これによって、漏れ電
流による特性劣化を防ぐものである。
In order to remedy this drawback, the applicant of the present application proposes to carry out a voltage treatment (aging) at a temperature of 150 ° C. or higher. That is, JP-A-2-2788
No. 07 (H01G 9/04), a capacitor is housed in a cylindrical perforated hot plate heated to a predetermined temperature of 150 ° C. or higher, and is subjected to aging while applying a rated voltage. This prevents the characteristic deterioration due to the leakage current.

【0005】[0005]

【発明が解決しようとする課題】上述の従来技術によれ
ば漏れ電流による特性劣化を防ぐ事は可能であるが、コ
ンデンサを加熱した円筒状穴あき熱板に収納し定格電圧
を印加することは、極めて作業性が悪く、量産に適さな
いという欠点があった。
According to the above-mentioned prior art, it is possible to prevent the characteristic deterioration due to the leakage current, but it is possible to store the capacitor in the heated cylindrical perforated heating plate and apply the rated voltage. However, the workability was extremely poor and it was not suitable for mass production.

【0006】[0006]

【課題を解決するための手段】本発明は上述の従来技術
の欠点を解決するためのものであり、陽極箔と陰極箔と
をセパレータを介して巻回したコンデンサ素子と、該コ
ンデンサ素子に含浸後冷却固化されたTCNQ塩と、該
コンデンサを封入する金属ケースとからなる固体電解コ
ンデンサにおいて、前記金属ケースの底面をフッ素樹脂
で被覆したことを特徴とするものである。また、本発明
は、陽極箔と陰極箔とをセパレータを介して巻回したコ
ンデンサ素子と、該コンデンサ素子に含浸後冷却固化さ
れたTCNQ塩と、該コンデンサを封入する金属ケース
とからなる固体電解コンデンサにおいて、前記金属ケー
スの底面をフッ素樹脂で被覆するとともに、150℃以
上の温度の溶融した半田中に浸漬させエージングを行う
ことを特徴とするものである。
DISCLOSURE OF THE INVENTION The present invention is to solve the above-mentioned drawbacks of the prior art. A capacitor element in which an anode foil and a cathode foil are wound around a separator, and the capacitor element is impregnated. A solid electrolytic capacitor comprising a post-cooled and solidified TCNQ salt and a metal case enclosing the capacitor is characterized in that the bottom surface of the metal case is coated with a fluororesin. Further, the present invention provides a solid electrolytic device comprising a capacitor element in which an anode foil and a cathode foil are wound with a separator interposed therebetween, a TCNQ salt which is cooled and solidified after impregnating the capacitor element, and a metal case enclosing the capacitor. In the capacitor, the bottom surface of the metal case is covered with a fluororesin and is immersed in molten solder having a temperature of 150 ° C. or higher for aging.

【0007】[0007]

【作用】本発明では、固体電解コンデンサを150℃以
上の温度の溶融した半田中に浸漬させエージングを行う
ので、漏れ電流を修復するために生じる絶縁被膜の耐熱
性が増し、半田付け時に相当する高温下に放置した場合
でも漏れ電流の増大を押さえる。また、金属ケースの底
面をフッ素樹脂で被覆することにより、エージング後に
溶融半田から取り出した際、金属ケースに不要な半田が
付着することが防止される。
In the present invention, the solid electrolytic capacitor is immersed in molten solder having a temperature of 150 ° C. or higher for aging, so that the heat resistance of the insulating coating produced to restore the leakage current is increased, which is suitable for soldering. It suppresses the increase in leakage current even when left at high temperature. Further, by covering the bottom surface of the metal case with the fluororesin, it is possible to prevent unnecessary solder from adhering to the metal case when the metal case is taken out from the molten solder after aging.

【0008】[0008]

【実施例】以下、本発明の実施例を説明する。図1は本
発明に使用するコンデンサ素子を示す。まず、高純度
(99.99%以上)のアルミニウム箔を化学的処理に
より粗面化し、実効表面積を増加させるためのいわゆる
エッチング処理を行う。次に電解液中にて、電気化学的
にアルミニウム箔表面に酸化被膜(酸化アルミニウムの
薄膜)を形成する(化成処理)。次にエッチング処理、
化成処理を行ったアルミニウム箔を陽極箔1とし、対向
陰極箔2との間にセパレータ3としてマニラ紙をはさ
み、図1に示すように円筒状に巻き取る。このように、
アルミニウム箔に酸化被膜を形成した陽極箔1と陰極箔
2との両電極箔間にセパレータ3を巻回して、コンデン
サ素子6が形成される。なお、4、5はリード線であ
る。
EXAMPLES Examples of the present invention will be described below. FIG. 1 shows a capacitor element used in the present invention. First, a so-called etching treatment for increasing the effective surface area is performed by roughening a high-purity (99.99% or more) aluminum foil by a chemical treatment. Next, an oxide film (a thin film of aluminum oxide) is electrochemically formed on the surface of the aluminum foil in the electrolytic solution (chemical conversion treatment). Next, etching process,
The aluminum foil which has been subjected to the chemical conversion treatment is used as the anode foil 1, sandwiched between the counter cathode foil 2 and the manila paper as the separator 3 and wound into a cylindrical shape as shown in FIG. in this way,
The separator element 3 is wound between both electrode foils of the anode foil 1 and the cathode foil 2, which are formed by forming an oxide film on the aluminum foil, to form the capacitor element 6. In addition, 4 and 5 are lead wires.

【0009】次に、コンデンサ素子6に熱処理を施し、
セパレータ3を構成するマニラ紙を炭化することによっ
て、繊維の細径化による密度の低下を図る。なお、セパ
レータとして、マニラ紙をあらかじめ所定の温度と時間
(例えば240℃、40分)で熱処理を施して炭化した
ものや、カーボン不織布を用い、陽極箔と陰極箔との間
にはさんで巻回してもよい。
Next, heat treatment is applied to the capacitor element 6,
By carbonizing the manila paper forming the separator 3, the density is reduced due to the thinning of the fibers. As the separator, manila paper which has been carbonized by heat treatment at a predetermined temperature and time (for example, 240 ° C., 40 minutes) or a carbon nonwoven fabric is used, and is wound between the anode foil and the cathode foil. You can turn it.

【0010】次に、図2に示すように、金属(アルミ)
ケース7内で TCNQ塩、例えば、N,N−ペンタメ
チレンルチジニウム2・TCNQ4とN−フェネチルルチ
ジニウム・TCNQ2の等量混合物を300℃で加熱融解
させ、その中に予熱した化成・炭化処理済みのコンデン
サ素子6を挿入し、融解したTCNQ塩をコンデンサ素
子6に含浸させ急冷する。その後、TCNQ塩とは反応
しにくい樹脂9を封入し、さらにエポキシ樹脂等10で
封口する。
Next, as shown in FIG. 2, metal (aluminum)
In case 7, a TCNQ salt, for example, an equivalent mixture of N, N-pentamethylene rutidinium 2 · TCNQ 4 and N-phenethyl rutidinium · TCNQ 2 was heated and melted at 300 ° C., and preheated to the formation reaction. Insert the carbonized capacitor element 6, impregnate the molten TCNQ salt into the capacitor element 6, and quench. After that, a resin 9 that does not easily react with the TCNQ salt is sealed, and further sealed with an epoxy resin 10 or the like.

【0011】さらに、図3に示すようにアルミケース7
の底面7aをフッ素樹脂11で被覆する。被覆の方法は
種々考えられるが、たとえば、フッ素を含む高分子の溶
液から溶媒を揮発させることによりフッ素被膜を形成す
るようにすれば、膜厚の管理が容易になる。また、水を
溶媒として用いれば安全性が高い。図4はこのようにし
て形成したフッ素被膜の状態を示す拡大図である。
Further, as shown in FIG. 3, an aluminum case 7 is provided.
The bottom surface 7a of the is covered with the fluororesin 11. Although various coating methods are conceivable, for example, if the solvent is volatilized from a solution of a polymer containing fluorine to form a fluorine coating, the film thickness can be easily controlled. In addition, if water is used as a solvent, safety is high. FIG. 4 is an enlarged view showing the state of the fluorine coating thus formed.

【0012】また、フッ素樹脂は次式で示されるような
構造の4フッ化されたホモポリマの、0.3ミクロン以
下の微粒子の密着したものを用いることにより、図5に
示すように、アルミケース7との密着強度の高い被膜が
形成される。
Further, as the fluororesin, a tetrafluorinated homopolymer having a structure represented by the following formula, in which fine particles of 0.3 μm or less are adhered, is used. A film having high adhesion strength with No. 7 is formed.

【0013】[0013]

【化1】 [Chemical 1]

【0014】このようにして形成されたコンデンサを、
図6に示すような装置によりエージングを行う。すなわ
ち、半田槽12内で半田13を溶融し150℃以上の一
定温度(たとえば220℃)に維持し、この溶融半田1
3中にコンデンサを浸漬する。このとき、コンデンサの
陽極リード5と溶融半田13との間に定格電圧を印加
し、エージングを行う。エージング時間は30秒程度で
ある。
The capacitor thus formed is
Aging is performed by an apparatus as shown in FIG. That is, the solder 13 is melted in the solder bath 12 and maintained at a constant temperature of 150 ° C. or higher (for example, 220 ° C.).
Immerse the capacitor in 3. At this time, a rated voltage is applied between the anode lead 5 of the capacitor and the molten solder 13 to perform aging. The aging time is about 30 seconds.

【0015】このような方法により、エージングを作業
性よく行うことができるとともに、アルミケース7の底
面7aをフッ素樹脂11で被覆しているので、底面7a
に半田が付着することはない。なお、図7はアルミケー
ス7の底面7aをフッ素樹脂11で被覆しない従来のコ
ンデンサを、本発明による方法でエージングを行った場
合の図であり、アルミケース7の底面7aに半田13が
付着し、この除去作業が別途必要となる。
With this method, aging can be performed with good workability, and since the bottom surface 7a of the aluminum case 7 is covered with the fluororesin 11, the bottom surface 7a is formed.
No solder will adhere to the. FIG. 7 is a diagram showing a case where a conventional capacitor in which the bottom surface 7a of the aluminum case 7 is not covered with the fluororesin 11 is aged by the method according to the present invention, and the solder 13 is attached to the bottom surface 7a of the aluminum case 7. , This removal work is required separately.

【0016】[0016]

【発明の効果】以上のように本発明によれば、陽極箔と
陰極箔とをセパレータを介して巻回したコンデンサ素子
と、該コンデンサ素子に含浸後冷却固化されたTCNQ
塩と、該コンデンサを封入する金属ケースとからなる固
体電解コンデンサにおいて、前記金属ケースの底面をフ
ッ素樹脂で被覆したものであり、さらに、このように形
成した固体電解コンデンサを150℃以上の温度の溶融
した半田中に浸漬させエージングを行うようにしたの
で、作業性良くエージングを行うことができ、半田付け
後においても漏れ電流特性の極めて優れた固体電解コン
デンサを製造することができる。
As described above, according to the present invention, a capacitor element in which an anode foil and a cathode foil are wound with a separator interposed therebetween, and a TCNQ which is cooled and solidified after impregnation of the capacitor element.
A solid electrolytic capacitor comprising a salt and a metal case encapsulating the capacitor, wherein the bottom surface of the metal case is coated with a fluororesin, and the solid electrolytic capacitor formed in this manner is used at a temperature of 150 ° C. or higher. Since aging is performed by immersing in a molten solder, aging can be performed with good workability, and a solid electrolytic capacitor having extremely excellent leakage current characteristics even after soldering can be manufactured.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に用いるコンデンサ素子を示す斜視図で
ある。
FIG. 1 is a perspective view showing a capacitor element used in the present invention.

【図2】本発明の固体電解コンデンサの断面図である。FIG. 2 is a sectional view of the solid electrolytic capacitor of the present invention.

【図3】本発明の固体電解コンデンサを示す図である。FIG. 3 is a diagram showing a solid electrolytic capacitor of the present invention.

【図4】本発明の固体電解コンデンサのフッ素被膜を示
す図である。
FIG. 4 is a diagram showing a fluorine coating of the solid electrolytic capacitor of the present invention.

【図5】本発明の固体電解コンデンサのフッ素被膜を示
す図である。
FIG. 5 is a diagram showing a fluorine coating of the solid electrolytic capacitor of the present invention.

【図6】本発明の固体電解コンデンサのエージング方法
を示す図である。
FIG. 6 is a diagram showing an aging method for a solid electrolytic capacitor of the present invention.

【図7】従来技術による固体電解コンデンサのエージン
グ後の状態を示す図である。
FIG. 7 is a diagram showing a state of a conventional solid electrolytic capacitor after aging.

【符号の説明】[Explanation of symbols]

1 陽極箔 2 陰極箔 3 セパレータ 4、5 リード線 6 コンデンサ素子 7 アルミケース 8 TCNQ塩 9 樹脂 10 エポキシ樹脂 11 フッ素樹脂被膜 12 半田槽 13 半田 1 Anode foil 2 Cathode foil 3 Separator 4, 5 Lead wire 6 Capacitor element 7 Aluminum case 8 TCNQ salt 9 Resin 10 Epoxy resin 11 Fluorine resin coating 12 Solder tank 13 Solder

Claims (7)

【特許請求の範囲】[Claims] 【請求項1】 陽極箔と陰極箔とをセパレータを介して
巻回したコンデンサ素子と、該コンデンサ素子に含浸後
冷却固化されたTCNQ塩と、該コンデンサを封入する
金属ケースとからなる固体電解コンデンサにおいて、前
記金属ケースの底面をフッ素樹脂で被覆したことを特徴
とする固体電解コンデンサ。
1. A solid electrolytic capacitor comprising a capacitor element in which an anode foil and a cathode foil are wound with a separator interposed therebetween, a TCNQ salt which is cooled and solidified after impregnating the capacitor element, and a metal case enclosing the capacitor. In the solid electrolytic capacitor, the bottom surface of the metal case is covered with a fluororesin.
【請求項2】 請求項1記載の固体電解コンデンサにお
いて、フッ素樹脂の被膜はフッ素を含む高分子の溶液か
ら溶媒を揮発させることにより形成されるフッ素を含む
高分子被膜であることを特徴とする固体電解コンデン
サ。
2. The solid electrolytic capacitor according to claim 1, wherein the fluororesin coating is a fluorine-containing polymer coating formed by volatilizing a solvent from a fluorine-containing polymer solution. Solid electrolytic capacitor.
【請求項3】 フッ素を含む溶液の溶媒は水であること
を特徴とする請求項2記載の固体電解コンデンサ。
3. The solid electrolytic capacitor according to claim 2, wherein the solvent of the solution containing fluorine is water.
【請求項4】 フッ素樹脂はフッ素を含む高分子の微粒
子の密着したものである請求項2記載の固体電解コンデ
ンサ。
4. The solid electrolytic capacitor according to claim 2, wherein the fluororesin is a polymer fine particle containing fluorine adhered thereto.
【請求項5】 フッ素を含む高分子の微粒子はホモポリ
マが4フッ化されたものである請求項4記載の固体電解
コンデンサ。
5. The solid electrolytic capacitor according to claim 4, wherein the fine particles of the polymer containing fluorine are tetrafluorinated homopolymers.
【請求項6】 フッ素を含む高分子の微粒子は0.3ミ
クロン以下のものである請求項4記載の固体電解コンデ
ンサ。
6. The solid electrolytic capacitor according to claim 4, wherein the fine particles of the polymer containing fluorine are 0.3 μm or less.
【請求項7】 陽極箔と陰極箔とをセパレータを介して
巻回したコンデンサ素子と、該コンデンサ素子に含浸後
冷却固化されたTCNQ塩と、該コンデンサを封入する
金属ケースとからなる固体電解コンデンサの製造方法に
おいて、前記金属ケースの底面をフッ素樹脂で被覆する
とともに、150℃以上の温度の溶融した半田中に浸漬
させエージングを行うことを特徴とする固体電解コンデ
ンサの製造方法。
7. A solid electrolytic capacitor comprising a capacitor element in which an anode foil and a cathode foil are wound with a separator interposed therebetween, a TCNQ salt which is cooled and solidified after impregnating the capacitor element, and a metal case enclosing the capacitor. The method for manufacturing a solid electrolytic capacitor according to the above item (1), wherein the bottom surface of the metal case is covered with a fluororesin, and the metal case is immersed in molten solder having a temperature of 150 ° C. or higher for aging.
JP22034691A 1991-08-30 1991-08-30 Solid electrolytic capacitor and method of manufacturing the same Expired - Fee Related JP2714281B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22034691A JP2714281B2 (en) 1991-08-30 1991-08-30 Solid electrolytic capacitor and method of manufacturing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22034691A JP2714281B2 (en) 1991-08-30 1991-08-30 Solid electrolytic capacitor and method of manufacturing the same

Publications (2)

Publication Number Publication Date
JPH0562864A true JPH0562864A (en) 1993-03-12
JP2714281B2 JP2714281B2 (en) 1998-02-16

Family

ID=16749704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22034691A Expired - Fee Related JP2714281B2 (en) 1991-08-30 1991-08-30 Solid electrolytic capacitor and method of manufacturing the same

Country Status (1)

Country Link
JP (1) JP2714281B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6567988B1 (en) 1996-09-02 2003-05-20 Sony Corporation Video signal transmission apparatus and video signal transmission method
KR20210132054A (en) 2019-01-31 2021-11-03 셀 메디신 가부시키가이샤 Inorganic salt protein complex medical device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6567988B1 (en) 1996-09-02 2003-05-20 Sony Corporation Video signal transmission apparatus and video signal transmission method
KR20210132054A (en) 2019-01-31 2021-11-03 셀 메디신 가부시키가이샤 Inorganic salt protein complex medical device

Also Published As

Publication number Publication date
JP2714281B2 (en) 1998-02-16

Similar Documents

Publication Publication Date Title
JPH01225112A (en) Method of manufacture of aluminum electrolytic capacitor and capacitor with unified anode obtained by the method
JPH0562864A (en) Solid electrolytic capacitor and its manufacture
JP3550232B2 (en) Method of manufacturing tab terminal for electrolytic capacitor
JP3123772B2 (en) Organic semiconductor solid electrolytic capacitors
JPH06163323A (en) Manufacture of organic semiconductor solid state electrolytic capacitor
JP3438900B2 (en) Solid electrolytic capacitors
JPH0744131B2 (en) Method for manufacturing solid electrolytic capacitor
JP2950898B2 (en) Manufacturing method of organic semiconductor solid electrolytic capacitor
JP3326196B2 (en) Method for manufacturing solid electrolytic capacitor
JPH06151257A (en) Manufacture of organic semiconductor solid electrolytic capacitor
JP2755767B2 (en) Manufacturing method of organic semiconductor solid electrolytic capacitor
KR0154126B1 (en) Solid electrolytic capacitor and manufacturing method thereof
JP3123773B2 (en) Organic semiconductor solid electrolytic capacitors
KR100280291B1 (en) Dielectric crack recovery method of aluminum thin film for aluminum electrolytic capacitor
JPH09260215A (en) Manufacture of solid electrolytic capacitor
JP3162738B2 (en) Solid electrolytic capacitors
KR100434216B1 (en) Making method of capacitor by using solid electrolyte
JPH047086B2 (en)
JP2000277389A (en) Solid electrolytic capacitor and manufacturing method thereof
JP3474986B2 (en) Solid electrolytic capacitor and method of manufacturing the same
JP3093810B2 (en) Method for manufacturing solid electrolytic capacitor
JPH04312910A (en) Production of solid-state electrolytic capacitor
JPS60214519A (en) Method of producing solid electrolytic condenser
JP2001085277A (en) Solid electrolytic capacitor and manufacturing method thereof
JPH0467331B2 (en)

Legal Events

Date Code Title Description
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071031

Year of fee payment: 10

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081031

Year of fee payment: 11

FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081031

Year of fee payment: 11

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 12

Free format text: PAYMENT UNTIL: 20091031

LAPS Cancellation because of no payment of annual fees