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US 10,062,519 B2Granted
Tantalum capacitor with polymer cathode
AssigneeKemet Electronics Corporation
InventorsYuri Freeman, Steven C. Hussey, Jimmy Dale Cisson, Philip M. Lessner
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Abstract
An improved capacitor and a method for forming an improved capacitor is detailed. The method comprises forming a tantalum anode from a tantalum powder with a powder charge of no more than 40,000 μC/g; forming a dielectric on the anode by anodization at a formation voltage of no more than 100 V; and forming a conductive polymeric cathode on the dielectric wherein the capacitor has a breakdown voltage higher than the formation voltage.
Claims18
A method for forming a capacitor comprising:
- forming a tantalum anode from a tantalum powder with a powder charge of no more than 40,000 μC/g;
- forming a dielectric on said anode by anodization at a formation voltage of no more than 100 V;
- forming a conductive polymeric cathode on said dielectric;
- and
- wherein said capacitor has a breakdown voltage higher than said formation voltage.
2 more elements
Dependencies are inferred from the claim text.