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Method for manufacturing double anode surface mounting type capacitor

A surface-mounted, capacitor technology, applied in the field of capacitors, to achieve mild reaction conditions, easy operation, significant economic and social benefits

Active Publication Date: 2010-12-01
福建国光新业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Chinese invention application whose publication number is CN1652267 and whose publication date is 2005.08.10 discloses a double-anode surface-mounted capacitor that can fully prevent the propagation of electromagnetic wave noise. It uses conductive polypyrrole to make the capacitor cathode electrolyte, but the The preparation process in the application does not involve technological treatment

Method used

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  • Method for manufacturing double anode surface mounting type capacitor
  • Method for manufacturing double anode surface mounting type capacitor

Examples

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preparation example Construction

[0028] The preparation method of double anode surface mount type capacitor of the present invention, carries out following steps in order:

[0029] Step 20: Form an oxide film dielectric layer on the surface of the anode body; the anode body is a valve metal and an oxide, the valve metal includes aluminum, tantalum, niobium, titanium, and the oxide includes niobium monoxide; the insulating glue is at least selected from Alkyd resin, polyester resin, phenolic resin, amino resin, epoxy resin, polyurethane resin, acrylic resin, silicone resin, chlorinated rubber, hydrocarbon resin, fluoropolymer, polyimide resin, vinyl resin One of.

[0030] Step 30: Cutting the anode body covered with the oxide film dielectric layer into a specified area.

[0031] Step 40: Place two insulating glues on the specified positions of the anode body covered with the oxide film dielectric layer to form two anode parts and one cathode part, and the actual effective area is the area of ​​the cathode par...

Embodiment 1

[0043] Cut the aluminum foil covered with oxide film medium into 17mm*9.5mm aluminum foil (aluminum foil enabling voltage is 3V); apply epoxy resin glue 1 on the specified position of the aluminum foil covered with oxide film medium, such as figure 1 As shown, to form two anode area parts 3 and a cathode area part 2, the actual effective area is the area of ​​the cathode area (length 9.5mm * width 9.5mm); then use the coupling agent solution to treat the aluminum foil cathode area: treatment The solution consists of silane coupling agent, methanol, and deionized water, wherein the mass concentration of silane coupling agent is 0.002%, the mass concentration of deionized water is 10.000%, and the mass concentration of methanol is 89.998%; followed by chemical polymerization, Partially immerse the aluminum foil cathode region in the mixed reducing solution of pyrrole monomer, p-toluenesulfonate dopant, water and ethanol, wherein the weight percentage of the monomer is 5%, and the...

Embodiment 2

[0045] Cut the aluminum foil covered with oxide film medium into 17mm*9.5mm aluminum foil (aluminum foil enabling voltage is 3V); apply epoxy resin glue 1 on the specified position of the aluminum foil covered with oxide film medium, such as figure 1 As shown, to form two anode area parts 3 and a cathode area part 2, the actual effective area is the area of ​​the cathode area (length 9.5mm * width 9.5mm); then use the coupling agent solution to treat the aluminum foil cathode area: treatment The solution consists of butyl titanate coupling agent, acetone, and deionized water. The mass concentration of butyl titanate coupling agent is 2.5%, the mass concentration of deionized water is 30.0%, and the mass concentration of acetone is 67.5%. Next, chemical polymerization is carried out, and the aluminum foil cathode area is partially immersed in pyrrole monomer, alkane In the mixed reducing solution of sulfonate dopant, water and ethanol, the weight percent of the monomer is 5%, a...

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Abstract

The invention provides a method for manufacturing a double anode surface mounting type capacitor. The method comprises the following steps in turn: forming an oxide film dielectric layer on the surface of an anode body; cutting the oxide film dielectric layer into a specified area; arranging insulation paste at two specified positions of the anode body on which an oxide film dielectric covers to form two anodic area parts and one cathodic area part; forming a conductive polymer layer on the cathodic area part; forming a carbon layer on the conductive polymer layer; forming a silver layer on the carbon layer to obtain a capacitor element; assembling the capacitor element and arranging anode and cathode leading-out terminals; molding and encapsulating the capacitor element which is assembled by using a resin to form a capacitor; and performing burn-in on an encapsulated product. The double anode surface mounting type capacitor prepared by using the method of the invention has the advantages of: high capacity, low ESR and low ESL and other high performance; and the preparation method has the advantages of: mild reaction conditions, simple and convenient operation, suitability for large-scale production and obvious economic and social benefits.

Description

【Technical field】 [0001] The invention relates to a capacitor, in particular to a method for preparing a surface-mounted capacitor with a double-anode structure. 【Background technique】 [0002] Today, as electronic products are increasingly miniaturized, the previously used perforated plug-in components can no longer be reduced, especially large-scale, highly integrated ICs. Surface mount components have to be used to increase production, increase production efficiency and reduce production costs. For example, a surface mount capacitor is a surface mount component. Surface mount capacitors can be divided into single anode surface mount capacitors and double anode surface mount capacitors. [0003] From the perspective of the structure itself, the decoupling effect of single-anode surface mount capacitors is poor, and often requires dozens of products to achieve better results, resulting in a more cumbersome layout on the circuit board; and double-anode surface mount capacito...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G9/04
Inventor 张易宁何腾云
Owner 福建国光新业科技股份有限公司