CN201340806Y - Solid electrolytic capacitor of cathode layer containing silver - Google Patents
Solid electrolytic capacitor of cathode layer containing silver Download PDFInfo
- Publication number
- CN201340806Y CN201340806Y CNU2008202290047U CN200820229004U CN201340806Y CN 201340806 Y CN201340806 Y CN 201340806Y CN U2008202290047 U CNU2008202290047 U CN U2008202290047U CN 200820229004 U CN200820229004 U CN 200820229004U CN 201340806 Y CN201340806 Y CN 201340806Y
- Authority
- CN
- China
- Prior art keywords
- cathode layer
- electrolytic capacitor
- solid electrolytic
- layer containing
- containing silver
- 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 - Lifetime
Links
Images
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The utility model provides a solid electrolytic capacitor of a cathode layer containing silver, which comprises valve metal, a conducting polymer layer, a cathode layer containing carbon, the cathode layer containing silver and a lead wire connecting and plastic sealing portion. The solid electrolytic capacitor of a cathode layer containing silver is characterized in that the thickness of the cathode layer containing silver ranges from 0.05 mm to 0.1mm, and the height of the cathode layer containing silver is 10%-80% of that of the cathode layer containing carbon. Through the cathode layer containing silver with suitable height, the utility model not only guarantees and optimizes quality and electrical property of the electrolytic capacitor, but also saves silver paste layer and saves cost and resources.
Description
Technical field
The utility model belongs to the solid electrolytic capacitor preparation field, more specifically relates to a kind of solid electrolytic capacitor that contains silver body cathode layer.
Background technology
Electrolytic capacitor is meant on the surface of valve metals (ValveMetal) such as aluminium, tantalum, niobium, titanium and adopts anode oxidation method (AnodicOxidation) to generate the skim oxide as dielectric, the capacitor that constitutes as negative electrode with electrolyte.Solid sheet type aluminum electrolytic capacitor is a kind of new electronic component of making capacitor cathode with conducting polymer, has low impedance at high frequency, the reliability height, be easy to the chip type characteristics, but there are a lot of defectives in the preparation process for solid sheet type aluminum electrolytic capacitor in the prior art, therefore makes the properties of product of preparing not good.The cathode layer of general electrolytic capacitor all be carbon-coating outside by silver-coated layer, wherein because differences such as height, thickness are all influential to the performance of capacitor, and silver-coated layer is too much, the increase production cost.
The utility model content
The purpose of this utility model is that a kind of solid electrolytic capacitor that contains silver body cathode layer will be provided; By suitable silver body cathode layer height and the thickness of containing, promptly guarantee and optimize the quality and the electrical property of electrolytic capacitor, economize silver slurry layer again, saved cost and resource.
The solid electrolytic capacitor that contains silver body cathode layer of the present utility model, comprise valve metal, electroconductive polymer layer, carbon containing cathode layer, contain silver body cathode layer, lead-in wire connects and the plastic packaging part, it is characterized in that: the described thickness range that contains silver body cathode layer is 0.005mm～0.1mm, highly is 10%～80% of carbon containing cathode layer height.
Remarkable advantage of the present utility model is: the utility model promptly guarantees and optimizes the quality and the electrical property of electrolytic capacitor by the suitable silver body cathode layer height that contains, and economizes silver slurry layer again, effectively reduces product cost, economizes on resources, and has remarkable economic efficiency.
Description of drawings
Fig. 1 is the cross-sectional schematic of the utility model solid electrolytic capacitor, wherein, 1 valve metal, 2 electroconductive polymer layers, 3 carbon containing cathode layers, 4 contain silver body cathode layer, 5 electrically conducting adhesives, 6 lead frames, 7 plastic packaging materials, 8 intercept band, 9 electrically conducting adhesives.
Embodiment
According to Fig. 1, specify solid electrolytic capacitor of the present utility model, comprise valve metal 1, electroconductive polymer layer 2, carbon containing cathode layer 3, contain silver body cathode layer 4, the anode of solid electrolytic capacitor bonds to the anode tap of lead frame 6 by electrically conducting adhesive 9, the negative electrode of solid electrolytic capacitor bonds to the cathode terminal of lead frame 6 by electrically conducting adhesive 5, and solid electrolytic capacitor carries out plastic packaging with epoxy resin 7.
The thickness range that contains silver body cathode layer of the present utility model is 0.005mm～0.1mm, highly is 10%～80% of carbon containing cathode layer height.
1. the capacitor chip of solid electrolytic capacitor of the present utility model is valve metal or the oxide that surface coverage has dielectric layer, and valve metal is aluminium, tantalum, niobium or titanium etc., and oxide is a columbium monoxide etc.
Embodiment 1
With the solid aluminum electrolytic capacitor that adopts the utility model structure is example, finish the carbon containing cathode layer by after the system, with dipping method product is immersed in the silver slurry; The product impregnating speed is 0.125mm/s, and impregnating depth is 20% of a carbon containing cathode layer height, and dip time is 10s, with the speed of 0.05mm/s product is mentioned again.After room temperature leaves standstill and dries 10min, dry 10min in 80 ℃ of continuous tunnel furnaces, 20min is dried in the back in 130 ℃ of continuous tunnel furnaces, repeat once again, and product is dried 20min in 130 ℃ of continuous tunnel furnaces.It contains the thickness of silver body cathode layer to product test after finishing.
Embodiment 2 is according to the step of embodiment 1, and impregnating depth is 50% of a carbon containing cathode layer height.
Comparative Examples
Argentiferous cathodic region height is more than 80% of carbon containing cathode layer height
With the solid aluminum electrolytic capacitor is example, finish the carbon containing cathode layer by after the system, with dipping method product is immersed in the silver slurry; The product impregnating speed is 0.125mm/s, and dip time is 10s, and impregnating depth is more than 80% of cathodic region.With the speed of 0.05mm/s product is mentioned again.After room temperature leaves standstill and dries 10min, dry 10min in 80 ℃ of continuous tunnel furnaces, 20min is dried in the back in 130 ℃ of continuous tunnel furnaces, repeat once again, and product is dried 20min in 130 ℃ of continuous tunnel furnaces.It contains the thickness of silver body cathode layer to product test after finishing.
Table 1 contains the silver body cathode layer test data
| Example | Contain silver body cathode layer thickness/mm |
| Embodiment 1 | 0.063 |
| Embodiment 2 | 0.071 |
| Comparative Examples | 0.073 |
The solid aluminum electrolytic capacitor finished product of embodiment 1,2 and Comparative Examples preparation carries out electric performance test, and the result is as shown in table 2.
Table 2 finished product is taken a sample test result's statistics
| Capacity/μ F | Loss ‰ | ESR/mΩ | The electric leakage qualification rate | |
| Embodiment 1 | 81.26 | 24.33 | 47.90 | 75.9％ |
| Embodiment 2 | 84.09 | 21.40 | 42.33 | 81％ |
| Comparative Examples | 83.57 | 21.00 | 38.63 | 85％ |
Claims (3)
1. solid electrolytic capacitor that contains silver body cathode layer, comprise valve metal, electroconductive polymer layer, carbon containing cathode layer, contain silver body cathode layer, lead-in wire connects and the plastic packaging part, it is characterized in that: the described thickness range that contains silver body cathode layer is 0.005mm～0.1mm, highly is 10%～80% of carbon containing cathode layer height.
2. the solid electrolytic capacitor that contains silver body cathode layer according to claim 1 is characterized in that: described lead-in wire coupling part is that the electrode of solid electrolytic capacitor bonds to lead frame by electrically conducting adhesive.
3. the solid electrolytic capacitor that contains silver body cathode layer according to claim 1 is characterized in that: described solid electrolytic capacitor carries out plastic packaging with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202290047U CN201340806Y (en) | 2008-11-21 | 2008-11-21 | Solid electrolytic capacitor of cathode layer containing silver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202290047U CN201340806Y (en) | 2008-11-21 | 2008-11-21 | Solid electrolytic capacitor of cathode layer containing silver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201340806Y true CN201340806Y (en) | 2009-11-04 |
Family
ID=41236349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202290047U Expired - Lifetime CN201340806Y (en) | 2008-11-21 | 2008-11-21 | Solid electrolytic capacitor of cathode layer containing silver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201340806Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005300A (en) * | 2010-10-26 | 2011-04-06 | 福建国光电子科技股份有限公司 | Process for preparing solid electrolytic capacitor |
| CN106783177A (en) * | 2016-12-27 | 2017-05-31 | 福建国光电子科技股份有限公司 | A kind of method for preparing the chip-type laminated solid aluminum electrolytic capacitor of thin polymeric |
| CN107316747A (en) * | 2017-07-01 | 2017-11-03 | 中南大学 | The production method of low ESR laminations solid-state aluminum electrolytic capacitor |
-
2008
- 2008-11-21 CN CNU2008202290047U patent/CN201340806Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005300A (en) * | 2010-10-26 | 2011-04-06 | 福建国光电子科技股份有限公司 | Process for preparing solid electrolytic capacitor |
| CN106783177A (en) * | 2016-12-27 | 2017-05-31 | 福建国光电子科技股份有限公司 | A kind of method for preparing the chip-type laminated solid aluminum electrolytic capacitor of thin polymeric |
| CN107316747A (en) * | 2017-07-01 | 2017-11-03 | 中南大学 | The production method of low ESR laminations solid-state aluminum electrolytic capacitor |
| CN107316747B (en) * | 2017-07-01 | 2019-02-19 | 中南大学 | The production method of low ESR lamination solid-state aluminum electrolytic capacitor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101983409B (en) | Capacitor with sacrificial lead wire configuration and improved manufacturing method thereof | |
| JP5587047B2 (en) | Solid electrolytic capacitor having face-down terminals | |
| CN101404213B (en) | Solid sheet type tantalum electrolyte capacitor and its manufacturing method | |
| CN104538180B (en) | A kind of preparation method of SOLID ORGANIC electrolytic capacitor | |
| CN110289170A (en) | Anode foil for aluminum electrolytic capacitor, preparation method and the capacitor that edge is left white | |
| CN201340806Y (en) | Solid electrolytic capacitor of cathode layer containing silver | |
| CN102623193A (en) | Aluminum electrolytic capacitor with long life, high frequency and low impedance and manufacturing method thereof | |
| CN102800480A (en) | Preparation method for cathode of Nb capacitor | |
| CN203397914U (en) | An ultra-low ESR chip macromolecular solid electrolytic capacitor | |
| CN104916443A (en) | High-voltage chip-type conducting polymer solid electrolyte tantalum capacitor and manufacturing method thereof | |
| CN103632847B (en) | A kind of axially mold pressing tantalum capacitor and manufacture method thereof | |
| CN102376456B (en) | Method for manufacturing solid electrolytic capacitor and solid electrolytic capacitor | |
| CN101404207B (en) | Non-polarity chip tantalum capacitor and manufacturing method thereof | |
| CN205050704U (en) | High voltage piece formula conductive polymer tantalum electrolytic capacitor | |
| CN204966289U (en) | Ultra -low temperature high pressure aluminium electrolytic capacitor | |
| CN107316747B (en) | The production method of low ESR lamination solid-state aluminum electrolytic capacitor | |
| US20190172652A1 (en) | Solid Electrolytic Capacitor for Use at High Temperatures | |
| CN102751102B (en) | Method for reducing equivalent series resistance of electrolytic capacitor | |
| CN109637811A (en) | A kind of chip-type laminated solid aluminum electrolytic capacitor of ultrathin type polymer and preparation method | |
| CN105788865A (en) | Production technology of patch-type aluminum electrolytic capacitor | |
| CN103295787A (en) | Method for processing dielectric oxide-film during manufacturing of electrolytic capacitors | |
| CN110797216B (en) | Preparation method of high-voltage ultra-small-capacity non-solid electrolyte tantalum electrolytic capacitor | |
| CN106783177A (en) | A kind of method for preparing the chip-type laminated solid aluminum electrolytic capacitor of thin polymeric | |
| CN100369169C (en) | Producing method for solid electrolytic capacitor | |
| CN201425893Y (en) | Ceramic capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091104 |