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US 8,559,164 B2Granted
Solid electrolytic capacitor
AssigneePanasonic Corporation
InventorsAyumi Kochi, Yukihiro Shimasaki
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Abstract
A silver paste layer constituting a collector layer in a solid electrolytic capacitor includes first silver particles having a peak particle size of 150 nm or less, second silver particles having a peak particle size of 500 nm or more, inorganic particles composed of material different from silver, and resin material. The inorganic particles are included at a volume ratio of 15% or more and 50% or less with respect to the total of the first silver particles and the second silver particles.
Claims4
A solid electrolytic capacitor comprising:
- a capacitor element having a base body composed of conductive material, a dielectric film formed on the base body, a solid electrolyte layer formed on the dielectric film, and a collector layer formed on the solid electrolyte layer and including at least a silver paste layer;
- a first external terminal electrically connected to the base body;
- and
- a second external terminal electrically connected to the collector layer,
- wherein the silver paste layer includes:
- first silver particles having a peak particle size of 150 nm or less;
- second silver particles having a peak particle size of 500 nm or more;
- inorganic particles composed of material different from silver;
- and
- resin material,
- wherein the inorganic particles are conductive and included at a volume ratio of 15% or more and 50% or less with respect to the total of the first silver particles and the second silver particles.
8 more elements
A solid electrolytic capacitor comprising:
- a capacitor element having a base body composed of conductive material, a dielectric film formed on the base body, a solid electrolyte layer formed on the dielectric film, and a collector layer formed on the solid electrolyte layer and including at least a silver paste layer;
- a first external terminal electrically connected to the base body;
- and
- a second external terminal electrically connected to the collector layer,
- wherein the silver paste layer includes:
- first silver particles having a peak particle size of 150 nm or less;
- second silver particles having a peak particle size of 500 nm or more;
- and
- resin material,
- wherein the first silver particles are particles obtained by surrounding inorganic particles as a core with a silver layer.
7 more elements
Dependencies are inferred from the claim text.