高压超大容量有机电解质片式钽电容器高温稳定性试验

Experimental on Stability of High Voltage and Ultra-Large Electrostatic Capacity Organic Solid Electrolyte Chip Tantalum Capacitors

高压超大容量有机固体电解质片式钽电容器是适应新一代电子信息技术而开发的一种新型电容器。但行业内规定高低温(-55℃,125℃)容量变化±30%,严重限制了其在一些特殊领域的应用。通过对电介质化成工艺的调整,以及添加电介质和聚合物膜界面的后处理等方法有效改善了高温容量的稳定性,并通过一系列可靠性试验验证,电容器的容量变化率ΔC/C不超过20%,漏电流的稳定性也得到显著改善,从而满足了此类产品在特殊环境的使用要求。

The high-voltage ultra-large electrostatic capacity organic solid electrolyte chip tantalum capacitor is a new type of capacitor developed for the next generation of electronic information technology.However,the industry has specified a±30%capacity tolerance in high and low temperature(-55℃,125℃)operating range,which severely limits the use of such products in some special fields.Through the adjustment of dielectric formation process,as well as the addition of treatment of dielectric and polymer membrane interfaces,the stability of high temperature capacity has been improved,and verifying the capacity change rate of the capacitor through a series of reliability tests,andΔC/C does not exceed 20%,and the stability with temperature changing of leakage current is significantly improved.Thus,it satisfies the operating requirements of this kind of products in special environment.