片式有机固体钽电解电容器频率及温度特性研究 research on frequency and temperature characteristics of chip organic tantalum solid electrolytic capacitor.pdfVIP
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片式有机固体钽电解电容器频率及温度特性研究 research on frequency and temperature characteristics of chip organic tantalum solid electrolytic capacitor
电子工艺技术
年 月 第 卷第 期 Electronics Process Technology 307
2013 9 34 5
片式有机固体钽电解电容器频率及温度特性研究
1 2 1
马腾双 ,陆胜,龙道学
(1.中国振华(集团)新云电子元器件有限责任公司,贵州 贵阳 550018;
2.重庆工商大学计算机科学与工程学院,重庆 400067)
摘 要:以对甲苯磺酸铁为氧化剂,采用化学氧化法在阀金属钽多孔体表面电介质层上合成了具有优异导
电性能的导电聚合物聚3,4-乙烯基二氧噻吩(PEDT)。并以PEDT为阴极电解质取代传统的阴极电解质二氧化
锰制备有机固体钽电解电容器,对有机固体钽电解电容器的频率及温度特性进行研究。结果表明,以PEDT为
阴极电解质的钽电解电容器,其等效串联电阻(ESR)值降低至传统无机固体钽电解电容器ESR值的1/3以下,
具有稳定的频率特性和温度特性,能够满足现代高频开关电源滤波电路的特殊要求。
关键词:导电聚合物;频率特性;固体钽电解电容器
中国分类号:TM535.1 文献标识码:A 文章编号:1001-3474(2013)05-0307-04
Research on Frequency and Temperature Characteristics of
Chip Organic Tantalum Solid Electrolytic Capacitor
1 2 1
MA Teng-shuang , LU Sheng , LONG Dao-xue
( 1.China Zhenhua Group Xinyun Electronic Components Company, Guiyang 550018, China;
2. Chongqing Technology and Business University, Chongqing 400067, China )
Abstract: Ferric p-toluenesulfonate as oxidant, using chemical oxidation method, the conductive polymer poly 3,4 - vinyl
dioxythiophene (PEDT) with high conductive was synthesized on the surface of the dielectric layer on the valve metal tantalum
porous sintered compact. And replacing the traditional manganese dioxide with the PEDT as cathode electrolyte to make organic
tantalum solid electrolytic capacitors, frequency and temperature characteristics of these organic tantalum solid electrolytic
capacitors were studied. The results showed that the equivalent series resistance (ESR) value of the tantalum electrolytic
capacitor with PEDT as cathode electrolyte decreased to1/3 or less of traditional inorganic solid tantalum electrolytic capacit
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