CN201829352U - Solid electrolytic capacitor - Google Patents
Solid electrolytic capacitor Download PDFInfo
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- CN201829352U CN201829352U CN2010205770289U CN201020577028U CN201829352U CN 201829352 U CN201829352 U CN 201829352U CN 2010205770289 U CN2010205770289 U CN 2010205770289U CN 201020577028 U CN201020577028 U CN 201020577028U CN 201829352 U CN201829352 U CN 201829352U
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- anode
- electrolytic capacitor
- lead frame
- solid electrolytic
- cathode
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Abstract
The utility model discloses a solid electrolytic capacitor comprising a capacitor element, an anode lead frame and a cathode lead frame that are used for leading an anode and a cathode out respectively, and an external plastic package body, wherein the capacitor element consists of an anode body the surface of which is covered with an oxidation film medium; the surface of the oxidation film medium is divided into an anode area and a cathode area by insulating glue; the surface of the oxidation film medium at the cathode area is covered with a solid electrolytic layer, the surface of which is covered with a carbon layer and a silver layer in sequence; and the surfaces of the anode lead frame and the cathode lead frame outside packaged resin are coated with organic silicon resins. The capacity and ESR (equivalent series resistance) of the solid electrolytic capacitor are both more stable after being surface-mounted (slicker solder reflow soldering or lead-free reflow soldering) or at high temperature after being surface-mounted.
Description
[technical field]
The utility model belongs to the electronic devices and components field, specifically is meant a kind of solid electrolytic capacitor.
[background technology]
Electrolytic capacitor is meant on the surface of valve metals such as aluminium, tantalum, niobium, titanium and adopts anode oxidation method to generate the skim oxide as dielectric, the capacitor that constitutes as negative electrode with electrolyte.In today that electronic product is pursued miniaturization day by day, previously used perforation plug-in unit element can't dwindle, and particularly extensive, high integrated IC has to adopt the surface patch element, to improve output, enhances productivity and reduces production costs.
The appearance of solid electrolytic capacitor and development have adapted to such market demand just.Solid sheet type electrolytic capacitor is a kind of new electronic component of making capacitor cathode with oxide or conducting polymer, wherein conducting polymer mainly contains polypyrrole, polythiophene, polyaniline or their derivative, it has low impedance at high frequency and is easy to characteristics such as chip type, but there are a lot of defectives in the preparation process for solid electrolytic capacitor in the prior art, and therefore the properties of product of preparing are not good.Exist the capacity extraction rate low as product, (ESR) is bigger for equivalent series resistance, experienced process in the technology is not good to the repairing effect of oxide-film at present, problem, especially products such as the low and product reliability of finished product leakage current qualification rate is relatively poor occur portioned product ESR after through surface mount (slicker solder Reflow Soldering or unleaded Reflow Soldering) and become big and mount that ESR becomes big phenomenon under the product hot conditions of back.This and conducting polymer electrolyte thermal endurance is not high and the micromolecule dopant decomposes easily at the above high temperature of 200 degree much relations are arranged.
[utility model content]
Technical problem to be solved in the utility model is to provide a kind of resistant to elevated temperatures solid electrolytic capacitor.
The utility model solves the problems of the technologies described above by the following technical solutions:
A kind of solid electrolytic capacitor, comprise capacitor element, be used for the anode lead frame that anode and negative electrode are drawn respectively and the plastic-sealed body of cathode leg frame and outside, described capacitor element comprises anode bodies, be coated with oxide film dielectric on its surface, be divided into anode region and cathodic region on the oxide film dielectric surface with insulating cement, oxide film dielectric surface coverage in the cathodic region has solid electrolyte layer, is coated with carbon-coating and silver layer on the solid electrolyte laminar surface successively; The anode lead frame of described potting resin outside and cathode leg frame table face apply organic siliconresin.
The thickness of described organic siliconresin is the 20-100 micron.
Advantage of the present utility model is: capacity and the ESR of product under hot conditions is more stable through surface mount (slicker solder Reflow Soldering or unleaded Reflow Soldering) back and after mounting for product.
[description of drawings]
Fig. 1 is the utility model solid aluminum electrolytic capacitor structural representation.
Fig. 2 is the utility model monolithic capacitor component structure schematic diagram.
[embodiment]
In order to be easy to further understand the present invention, following examples will the invention will be further elaborated, below is preferred embodiment of the present invention, and the present invention is not limited only to this.It is anode bodies that following examples and Comparative Examples adopt aluminium, but is not limited thereto, and the present invention is equally applicable to other anode bodies, as tantalum, niobium, titanium, columbium monoxide.
Embodiment 1:
With the solid aluminum electrolytic capacitor is example, as shown in Figure 1, this solid aluminum electrolytic capacitor comprise the assembling of eight monolithic capacitor elements stacked capacitor element, the anode lead frame 1 that is used for anode is drawn, be used for the cathode leg frame 2 that negative electrode is drawn and the plastic-sealed body 3 of outside, be coated with machine silicones 4 on the anode lead frame 1 of described plastic-sealed body 3 outsides and the cathode leg frame 2, this organic siliconresin is HC300.Wherein said monolithic capacitor unit as shown in Figure 2, comprise anode bodies aluminium core 10, the aluminium oxide 20 of its surface coverage, be divided into anode region 30 and cathodic region 40 on aluminium oxide 20 surfaces with insulating cement 80,40 aluminium oxide 20 surface coverage have conductive polymer coating 50 in the cathodic region, are coated with carbon-coating 60 and silver layer 70 on conductive polymer coating 50 surfaces successively.
This capacitor is the solid aluminum electrolytic capacitor of specification 6.3V/150 μ F.
This capacitor was examined 120 hours through carrying out 150 degree high temperature after the unleaded Reflow Soldering again.
Embodiment 2:
The solid aluminum electrolytic capacitor of present embodiment is compared with embodiment 1, and except that organic siliconresin was SC-7501, all the other were all identical.
Embodiment 3:
The solid aluminum electrolytic capacitor of present embodiment is compared with embodiment 1, and except that organic siliconresin was SC-7501, all the other were all identical.
Comparative Examples:
The solid aluminum electrolytic capacitor of this Comparative Examples is compared with embodiment 1, and except that not being coated with organic silicones, all the other are all identical.
The result:
The above embodiment and the Comparative Examples result of appraisal are as follows:
Can be found that by above three embodiment data embodiment of the present utility model is with respect to Comparative Examples, capacity and the ESR when high temperature is more stable for product, and this illustrates that solid electrolytic capacitor of the present utility model has more stable performance.
Claims (2)
1. solid electrolytic capacitor, comprise capacitor element, be used for anode lead frame and cathode leg frame that anode and negative electrode are drawn respectively, and the plastic-sealed body of outside, described capacitor element comprises anode bodies, be coated with oxide film dielectric on its surface, be divided into anode region and cathodic region on the oxide film dielectric surface with insulating cement, the oxide film dielectric surface coverage in the cathodic region has solid electrolyte layer, is coated with carbon-coating and silver layer on the solid electrolyte laminar surface successively; It is characterized in that: the anode lead frame of described potting resin outside and cathode leg frame table face apply organic siliconresin.
2. a kind of solid electrolytic capacitor according to claim 1 is characterized in that: the thickness of described organic siliconresin is the 20-100 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205770289U CN201829352U (en) | 2010-10-26 | 2010-10-26 | Solid electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205770289U CN201829352U (en) | 2010-10-26 | 2010-10-26 | Solid electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201829352U true CN201829352U (en) | 2011-05-11 |
Family
ID=43967873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205770289U Expired - Lifetime CN201829352U (en) | 2010-10-26 | 2010-10-26 | Solid electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201829352U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200996A (en) * | 2014-06-25 | 2014-12-10 | 福建国光电子科技股份有限公司 | Solid electrolytic condenser for multi-level mode electrode element |
| US20160189872A1 (en) * | 2014-12-24 | 2016-06-30 | Showa Denko K.K. | Solid electrolytic capacitor article, solid electrolytic capacitor, lead frame and method for manufacturing solid electrolytic capacitor |
-
2010
- 2010-10-26 CN CN2010205770289U patent/CN201829352U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200996A (en) * | 2014-06-25 | 2014-12-10 | 福建国光电子科技股份有限公司 | Solid electrolytic condenser for multi-level mode electrode element |
| US20160189872A1 (en) * | 2014-12-24 | 2016-06-30 | Showa Denko K.K. | Solid electrolytic capacitor article, solid electrolytic capacitor, lead frame and method for manufacturing solid electrolytic capacitor |
| US10128053B2 (en) * | 2014-12-24 | 2018-11-13 | Showa Denko K.K. | Solid electrolytic capacitor article, solid electrolytic capacitor, lead frame and method for manufacturing solid electrolytic capacitor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200311 Address after: 350000 room 1110, floor 1, No. 160, jiangbindong Avenue, Mawei District, Fuzhou City, Fujian Province (within the free trade zone) Patentee after: Fujian Guoguang Xinye Technology Co., Ltd Address before: 160 No. 350015 Fujian province Fuzhou Mawei District Jiangbin East Avenue Patentee before: Fujian Guoguang Electronic Science & Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |
|
| CX01 | Expiry of patent term |