| 摘要 |
PROBLEM TO BE SOLVED: To increase the capacitance of a solid electrolytic capacitor while suppressing the cracking or crystallization of a dielectric layer and preventing increase in leakage current when a heat treatment process such as a reflow process is performed for the solid electrolytic capacitor. SOLUTION: In the solid electrolytic capacitor including an anode 1 formed of a valve action metal or an alloy containing a valve action metal as a main constituent, a dielectric layer 2 formed by anodizing the anode, and a cathode 4 formed on the dielectric layer, the dielectric layer includes a first dielectric layer 21 located on the anode side, and a second dielectric layer 22 formed on the first dielectric layer, and an oxygen concentration in the second dielectric layer is decreased from the first dielectric layer side toward the cathode side. COPYRIGHT: (C)2011,JPO&INPIT
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