Surface treatment of the anodes for tantalum capacitors

Details Surface treatment of the anodes for tantalum capacitors Surface treatment of the anodes for tantalum capacitors

1978-01-03

1979-01-23

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 35N, 204 42, C25D 1126

Patent

active

041359909

ABSTRACT:
The anodization of sintered anodes for tantalum capacitors is carried out in two successive steps separated by a cleaning step in an acid bath. In a preferred variant of the process both the first anodization and the cleaning are performed on batches of anodes which are individually sorted and mounted on current carrying bars before the second anodization step. The direct leakage current of capacitors made from anodes anodized according to the invention is substantially lower than that of capacitors with prior art anodes. The capacitors are also less sensitive to temperature.

REFERENCES:
patent: 2989447 (1961-06-01), Power
patent: 3079536 (1963-02-01), McLean

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