JP2711564B2 - Method for manufacturing solid electrolytic capacitor - Google Patents
Method for manufacturing solid electrolytic capacitorInfo
- Publication number
- JP2711564B2 JP2711564B2 JP1106846A JP10684689A JP2711564B2 JP 2711564 B2 JP2711564 B2 JP 2711564B2 JP 1106846 A JP1106846 A JP 1106846A JP 10684689 A JP10684689 A JP 10684689A JP 2711564 B2 JP2711564 B2 JP 2711564B2
- Authority
- JP
- Japan
- Prior art keywords
- anode lead
- washer
- lead
- solid electrolytic
- electrolytic capacitor
- 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 - Fee Related
Links
- 239000003990 capacitor Substances 0.000 title claims description 28
- 239000007787 solid Substances 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title description 7
- 238000000034 method Methods 0.000 title description 5
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 2
- 239000007784 solid electrolyte Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 description 12
- 239000011347 resin Substances 0.000 description 12
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 229920006015 heat resistant resin Polymers 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229920000069 polyphenylene sulfide Polymers 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000009193 crawling Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920006367 Neoflon Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229920013629 Torelina Polymers 0.000 description 1
- 239000004742 Torelina™ Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical group [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920013653 perfluoroalkoxyethylene Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は固体電解コンデンサの製造方法に関し、さ
らに詳しく言えば、その陽極リードの保護手段に関する
ものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a solid electrolytic capacitor, and more particularly, to a means for protecting an anode lead.
第２図（ａ）には固体電解コンデンサの中核をなす典
型的な従来例としてのコンデンサ素子１が示されてい
る。すなわち、このコンデンサ素子１は、例えばTaやNb
などの弁作用を有する金属粉末の焼結体からなり、その
一端部には陽極リード２が植設されている。陽極リード
２は焼結前にその一端が埋設されるか、もしくは焼結後
に例えば溶接により取付けられる。コンデンサ素子１の
表面には電解酸化により酸化皮膜が形成され、次いでそ
の上に半導体電解質（固体電解質）が生成される。例え
ば硝酸マンガンの含浸・熱分解を複数回繰り返すことに
より、半導体電解質としてのMnO2層が形成されるが、そ
の際、MnO2が陽極リード２に這い上がるという現象が生
ずる。FIG. 2 (a) shows a capacitor element 1 as a typical conventional example which forms the core of a solid electrolytic capacitor. That is, this capacitor element 1 is made of, for example, Ta or Nb.
An anode lead 2 is implanted at one end of the sintered body of a metal powder having a valve action. The anode lead 2 is buried at one end before sintering, or is attached after sintering, for example, by welding. An oxide film is formed on the surface of the capacitor element 1 by electrolytic oxidation, and then a semiconductor electrolyte (solid electrolyte) is generated thereon. For example, by repeating impregnation and thermal decomposition of manganese nitrate a plurality of times, a MnO 2 layer as a semiconductor electrolyte is formed. At this time, a phenomenon occurs in which MnO 2 crawls on the anode lead 2.
これを防止するため、従来では第２図（ｂ）に示され
ているように陽極リード２の導出部に例えば弗素樹脂板
３を被せたり、同図（ｃ）に示されているように陽極リ
ード２の導出部に例えばシリコン系樹脂４を塗布するよ
うにしている。In order to prevent this, conventionally, as shown in FIG. 2 (b), a lead-out portion of the anode lead 2 is covered with, for example, a fluorine resin plate 3, or as shown in FIG. The lead portion of the lead 2 is coated with, for example, a silicon-based resin 4.
しかしながら、第２図（ｂ）に示す方法では、陽極リ
ード２との嵌合が緩い場合には樹脂板３が浮き上がり、
MnO2の這い上がり防止効果がないばかりか、陽極リード
２に外部リード線を溶接する場合に不具合を生ずる。す
なわち、焼結体と陽極リードとの接続部は何ら保護され
ていないため、陽極リード２に外部リード線を溶接する
際の機械的ストレスもしくは外装樹脂の熱収縮ストレス
などの影響をうけやすく、特性劣化、特に漏れ電流の増
加につながる。However, in the method shown in FIG. 2 (b), when the fitting with the anode lead 2 is loose, the resin plate 3 rises,
Not only is there no effect of preventing MnO 2 from climbing up, but also a problem occurs when an external lead wire is welded to the anode lead 2. That is, since the connection between the sintered body and the anode lead is not protected at all, the connection is easily affected by mechanical stress when welding the external lead wire to the anode lead 2 or heat shrinkage stress of the exterior resin. It leads to deterioration, especially to an increase in leakage current.
他方、同図（ｃ）に示されている樹脂４の塗布による
場合には、焼結体と陽極リードとの接続部はそれによっ
て保護されるが、樹脂の滴下位置あるいは滴下量などの
作業性に難がある。On the other hand, when the resin 4 is applied as shown in FIG. 3C, the connection between the sintered body and the anode lead is protected thereby, but the workability such as the position or amount of the resin dripping is reduced. Have difficulty.
この発明は上記した従来の欠点を解決するためになさ
れたもので、その目的は、生産性を損なうことなくコン
デンサ素子と陽極リードの接続部を効果的に保護し得る
ようにした固体電解コンデンサの製造方法を提供するこ
とにある。The present invention has been made to solve the above-mentioned conventional disadvantages, and has as its object to provide a solid electrolytic capacitor capable of effectively protecting the connection between a capacitor element and an anode lead without impairing productivity. It is to provide a manufacturing method.
上記目的を達成するため、この発明においては、Ta,N
bなどの弁作用を有する金属粉末の焼結体からなり、そ
の一端部に陽極リードが植設されたコンデンサ素子の上
記陽極リード導出部に熱可塑性高耐熱樹脂からなるワッ
シャーを挿通したのち、同ワッシャーを高温の不活性ガ
ス雰囲気中において加熱溶融させて上記陽極リード導出
部に密着させるようにしている。In order to achieve the above object, in the present invention, Ta, N
After inserting a washer made of thermoplastic high heat resistant resin into the above-mentioned anode lead lead-out portion of a capacitor element having a sintered body of a metal powder having a valve action such as b, and an anode lead implanted at one end thereof, The washer is heated and melted in a high-temperature inert gas atmosphere so as to adhere to the anode lead lead-out portion.
上記ワッシャーのうち、比較的融点の高いワッシャー
を加熱溶融するにあたっては、コンデンサ素子が例えば
Ta粉末で形成されている場合、常圧で高温に保持すると
その金属表面が酸化し、遂には燃焼する危険がある。そ
こで、この発明においては上記ワッシャーの加熱溶融
は、加熱されたN2もしくはArなどの不活性ガスを吹き付
けるか、その不活性ガス雰囲気中で溶融させるようにし
ている。Of the above washers, when heating and melting a relatively high melting point washer, for example, the capacitor element
When formed of Ta powder, if it is kept at a high temperature under normal pressure, there is a danger that the metal surface will oxidize and eventually burn. Therefore, in the present invention, the washer is heated and melted by blowing a heated inert gas such as N 2 or Ar or by melting in an inert gas atmosphere.
また、ワッシャーの加熱溶融は、コンデンサ素子の電
解酸化による酸化皮膜の形成前に行うのが好ましい。Further, it is preferable to heat and melt the washer before forming an oxide film by electrolytic oxidation of the capacitor element.
使用する熱可塑性高耐熱樹脂としては弗素系樹脂、例
えば PFA（４−弗化エチレンとパーフロロアルコキシエチ
レンとの共重合体；融点310℃）、 FEP（４−弗化エチレンと６弗化プロピレンとの共重
合体；融点280℃）、 ETFE（４−弗化エチレンとエチレンとの共重合体；融
点260℃） などが好ましいが、その他の樹脂としては例えばPPS
（ポリフェニレンサルファイド；融点285℃）などが例
示される。As the thermoplastic high heat-resistant resin to be used, fluorine-based resins such as PFA (copolymer of 4-fluoroethylene and perfluoroalkoxyethylene; melting point: 310 ° C.), FEP (4-fluoroethylene and hexafluoropropylene) ETFE (copolymer of 4-fluoroethylene and ethylene; melting point: 260 ° C.), and the like. Other resins such as PPS
(Polyphenylene sulfide; melting point 285 ° C.).
ここで、第１図を参照してこの発明による固体電解コ
ンデンサの製造方法により具体的に説明する。まず、同
図（ａ）に示されているように、熱可塑性高耐熱樹脂の
フィルムもしくはシートからなるワッシャー５をコンデ
ンサ素子１に見合った大きさにカットし、これを陽極ロ
ード２に挿通したのち、同陽極リード２に適当なフープ
材６に溶接する。このフープ材６に取付けられた状態で
次工程に搬送される際、ワッシャー５は図示しないガイ
ド部材にて同図（ｂ）に示されているように、陽極リー
ド２の導出部に当てがわれるように位置決めされる。次
に図示しないドライヤーなどにて高温の例えばN2ガスが
吹き付けられる。これにより、ワッシャー５は同図
（ｃ）に示されているように溶融して陽極リード２の導
出部に密着する。参照符号5aはその密着したものを示し
ている。Here, the method for manufacturing the solid electrolytic capacitor according to the present invention will be specifically described with reference to FIG. First, as shown in FIG. 1A, a washer 5 made of a film or a sheet of a thermoplastic high heat-resistant resin is cut into a size corresponding to the capacitor element 1 and inserted into the anode load 2. Then, a suitable hoop material 6 is welded to the anode lead 2. When being transported to the next step with the hoop 6 attached, the washer 5 is applied to a lead-out portion of the anode lead 2 by a guide member (not shown) as shown in FIG. Is positioned as follows. Next, high-temperature, for example, N 2 gas is blown by a dryer (not shown) or the like. Thereby, the washer 5 is melted and adheres to the lead-out portion of the anode lead 2 as shown in FIG. Reference numeral 5a indicates the close contact.
上記の構成によれば、コンデンサ素子を焼損すること
なく、ワッシャーの緊密な取り付けを一連の流れ工程に
おいて行うことができため、生産能力を下げることな
く、陽極リード接続部を強固に保護することができる。According to the above configuration, it is possible to tightly attach the washer in a series of flow steps without burning out the capacitor element, so that the anode lead connection portion can be firmly protected without reducing the production capacity. it can.
《実施例１》 外形寸法0.95mm×1.95mm×1.0mmのタンタルコンデン
サ素子の陽極リードに、弗素系フィルム・PFA「ネオフ
ロン」（商品名；ダイキン工業（株）製）からなる厚さ
0.25mmのワッシャーを挿通し、ヒートガン（白光メタル
社製）にてN2ガスを供給しながら同ワッシャーを溶融さ
せた。次いで、電解酸化によりコンデンサ素子の表面に
酸化皮膜を施し、MnO2層、カーボン層、銀層を順次形成
し、外部端子を接続したのち、外装樹脂（エポキシ）で
被覆し、定格電圧4V、静電容量10μＦの固体電解コンデ
ンサを製作した。<< Example 1 >> Thickness composed of fluorine-based film and PFA "Neoflon" (trade name; manufactured by Daikin Industries, Ltd.) on the anode lead of a tantalum capacitor element with external dimensions of 0.95 mm x 1.95 mm x 1.0 mm
A 0.25 mm washer was inserted, and the washer was melted while supplying N 2 gas with a heat gun (manufactured by Hakuko Metal Co., Ltd.). Next, an oxide film is formed on the surface of the capacitor element by electrolytic oxidation, a MnO 2 layer, a carbon layer, and a silver layer are sequentially formed, and external terminals are connected. Then, the package is covered with an exterior resin (epoxy). A solid electrolytic capacitor having a capacitance of 10 μF was manufactured.
《実施例２》 実施例１と同じコンデンサ素子の陽極リードに、PPS
フィルム「トレリナ」（商品名；東レ（株）製）からな
る厚さ0.2mmのワッシャーを挿通し、実施例１と同じく
ヒートガン（白光メタル社製）にてN2ガスを供給しなが
ら同ワッシャーを溶融させた。次いで、電解酸化により
コンデンサ素子の表面に酸化皮膜を施し、MnO2層、カー
ボン層、銀層を順次形成し、外部端子を接続したのち、
外装樹脂（エポキシ）で被覆し、定格電圧4V、静電容量
10μＦの固体電解コンデンサを製作した。<< Embodiment 2 >> A PPS was connected to the anode lead of the same capacitor element as in Embodiment 1.
Film "Torelina"; by inserting the washer thickness 0.2mm made of (trade name by Toray Co.), the same washer while supplying N 2 gas at same gun as in Example 1 (manufactured by white light Metals Corporation) Melted. Next, an oxide film is applied to the surface of the capacitor element by electrolytic oxidation, a MnO 2 layer, a carbon layer, and a silver layer are sequentially formed, and after connecting external terminals,
Covered with exterior resin (epoxy), rated voltage 4V, capacitance
A 10 μF solid electrolytic capacitor was manufactured.
〔比較例１〕 実施例１と同じコンデンサ素子の陽極リードにTFE
（テトラフロロエチレン）からなる厚さ0.2mmのワッシ
ャーを挿通し、電解酸化を行ってその表面に酸化皮膜を
施し、次いでMnO2層、カーボン層、銀層を順次形成し、
外部端子を接続したのち、外装樹脂（エポキシ）で被覆
し、定格電圧4V、静電容量10μＦの固体電解コンデンサ
を製作した。[Comparative Example 1] TFE was applied to the anode lead of the same capacitor element as in Example 1.
A 0.2 mm thick washer made of (tetrafluoroethylene) is inserted, electrolytic oxidation is performed to form an oxide film on the surface, and then a MnO 2 layer, a carbon layer, and a silver layer are sequentially formed.
After connecting the external terminals, it was coated with an exterior resin (epoxy) to produce a solid electrolytic capacitor having a rated voltage of 4 V and a capacitance of 10 μF.
上記各実施例と比較例をそれぞれ10,000個用意し、そ
の静電容量Cap（μＦ）、損失角の正接tanδ、漏れ電流
LC（μＡ）、製品としての特性不良率（％）、MnO2這い
上がり率（％）を測定した結果（平均値）を次表に示
す。Each of the above Examples and Comparative Examples was prepared in a quantity of 10,000, and its capacitance Cap (μF), loss tangent tanδ, leakage current
The following table shows the results of the measurement of the LC (μA), the characteristic defect rate (%) as a product, and the MnO 2 crawling rate (%) (average value).
この表から明らかなように、各実施例は特性不良率が
従来例の2/5〜1/2と改善されている。また、MnO2這い上
がり率は各実施例ともに０％を記録している。さらに、
漏れ電流の値からして陽極外部端子溶接時のストレス、
外装樹脂のストレスに対して顕著な緩和作用が認められ
る。 As is clear from this table, each of the examples has an improved characteristic failure rate of 2/5 to 1/2 of the conventional example. Further, the MnO 2 crawling rate is 0% in each of the examples. further,
Judging from the value of leakage current, stress during anode external terminal welding,
A remarkable relieving effect on the stress of the exterior resin is recognized.
以上説明したように、この発明によれば、コンデンサ
素子の陽極リード導出部に熱可塑性高耐熱樹脂からなる
ワッシャーを挿通して、同ワッシャーを不活性ガス雰囲
気中において加熱溶融させて陽極リード導出部に密着さ
せるようにしたことにより、コンデンサ素子を焼損する
ことなく一連の流れ工程において、生産能力を下げるこ
となく陽極リード接続部を強固に保護することができ
る。As described above, according to the present invention, a washer made of a thermoplastic high heat-resistant resin is inserted into the anode lead lead-out portion of the capacitor element, and the washer is heated and melted in an inert gas atmosphere to form an anode lead lead-out portion. With this configuration, the anode lead connection portion can be firmly protected in a series of flow steps without reducing the production capacity without burning out the capacitor element.
第１図（ａ）〜（ｃ）はこの発明による固体電解コンデ
ンサの製造過程を示した説明図、第２図（ａ）〜（ｃ）
はそれぞれ従来例を示した説明図である。 図中、１はコンデンサ素子、２は陽極リード、５は熱可
塑性高耐熱樹脂からなるワッシャー、６はフープ材であ
る。1 (a) to 1 (c) are explanatory views showing a process of manufacturing a solid electrolytic capacitor according to the present invention, and FIGS. 2 (a) to 2 (c).
Are explanatory diagrams each showing a conventional example. In the figure, 1 is a capacitor element, 2 is an anode lead, 5 is a washer made of thermoplastic high heat resistant resin, and 6 is a hoop material.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 西嶋 泰世 神奈川県藤沢市辻堂新町２丁目２番１号 エルナー株式会社内 (56)参考文献 特開 昭54−134355（ＪＰ，Ａ) 実開 昭64−26828（ＪＰ，Ｕ) 特公 昭49−13302（ＪＰ，Ｂ２) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yasushi Nishijima 2-2-1 Tsujido Shinmachi, Fujisawa-shi, Kanagawa Inside Erner Co., Ltd. (56) References JP-A-54-134355 (JP, A) Jpn. −26828 (JP, U) JP 49-13302 (JP, B2)
Claims (1)
結体からなり、その一端部に陽極リードが植設されたコ
ンデンサ素子の上記陽極リード導出部に熱可塑性高耐熱
樹脂のフィルムもしくはシートからなるワッシャーを挿
通したのち、同ワッシャーを高温の不活性ガス雰囲気中
において加熱溶融させて上記陽極リード導出部に密着さ
せ、しかる後に焼結体に酸化皮膜を形成し、さらに固体
電解質を形成することを特徴とした固体電解コンデンサ
の製造方法。1. A capacitor made of a sintered body of a metal powder having a valve action, such as Ta or Nb, having an anode lead implanted at one end thereof. Alternatively, after inserting a washer made of a sheet, the washer is heated and melted in a high-temperature inert gas atmosphere and adhered to the anode lead lead-out portion, and thereafter an oxide film is formed on the sintered body, and further the solid electrolyte is formed. Forming a solid electrolytic capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1106846A JP2711564B2 (en) | 1989-04-26 | 1989-04-26 | Method for manufacturing solid electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1106846A JP2711564B2 (en) | 1989-04-26 | 1989-04-26 | Method for manufacturing solid electrolytic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02285625A JPH02285625A (en) | 1990-11-22 |
| JP2711564B2 true JP2711564B2 (en) | 1998-02-10 |
Family
ID=14444015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1106846A Expired - Fee Related JP2711564B2 (en) | 1989-04-26 | 1989-04-26 | Method for manufacturing solid electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2711564B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0368124A (en) * | 1989-08-07 | 1991-03-25 | Elna Co Ltd | Manufacture of solid electrolytic capacitor |
| JPH04215416A (en) * | 1990-12-14 | 1992-08-06 | Elna Co Ltd | Creeping-up preventing board for solid electrolyte, solid electrolytic capacitor having said preventing board and manufacture of it |
| JP2768057B2 (en) * | 1991-06-03 | 1998-06-25 | エルナー株式会社 | Method for manufacturing solid electrolytic capacitor |
| JP5778450B2 (en) * | 2010-04-22 | 2015-09-16 | ローム株式会社 | Solid electrolytic capacitor and solid electrolytic capacitor manufacturing method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES401217A1 (en) * | 1972-03-27 | 1975-02-16 | Colomer Munmany S A | Processing drum for treating hides |
| JPS603769B2 (en) * | 1978-04-10 | 1985-01-30 | 日本電気ホームエレクトロニクス株式会社 | Manufacturing method of electrolytic capacitor |
| JPS6426828U (en) * | 1987-08-10 | 1989-02-15 |
-
1989
- 1989-04-26 JP JP1106846A patent/JP2711564B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02285625A (en) | 1990-11-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |