| abstract |
A solid electrolytic capacitor having improved performance in a high temperature environment is provided. A conductive polymer particle material containing a substituted polythiophene is improved, the degree of polymerization and particle diameter are optimized, a counter ion containing polystyrene sulfonic acid is devised, and a binder is added. In order to help protect the stability of the solid electrolyte at a high temperature, the capacitor element 120 is sealed and sealed in the housing 122 in the presence of a gas atmosphere containing an inert gas, and the amount of oxygen and moisture in the internal space 126. Limit. [Selection] Figure 1 |