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Hermetically Sealed Aluminum Electrolytic CapacitorAluminum electrolytic capacitors are presently not allowed on NASA missions because they outgas water and organic vapors, as well as H2. As a consequence, for some applications, much larger and heavier packages of tantalum capacitors must be used. A hermetically sealed aluminum capacitor has been developed. This contains a nongassing electrolyte that was developed for this application so internal pressure would remain low. Capacitors rated from 250 V to 540 V have been operated under full load for thousands of hours at 85 and 105 C with good electrical performance and absence of gas generation. Electrolyte chemistry and seal engineering will be discussed, as well as the extension of this design concept to lower voltage ratings.
Document ID
19970009458
Document Type
Conference Paper
Authors
Alwitt, Robert S.
(Boundary Technologies, Inc. Buffalo Grove, IL United States)
Liu, Yanming
(Boundary Technologies, Inc. Buffalo Grove, IL United States)
Elias, William
(BACE Technologies Pickens, SC United States)
Date Acquired
August 17, 2013
Publication Date
December 1, 1996
Publication Information
Publication: Space Electrochemical Research and Technology
Subject Category
Electronics And Electrical Engineering
Funding Number(s)
CONTRACT_GRANT: NAS8-38899
CONTRACT_GRANT: NAS8-39371
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19970009446Analytic PrimarySpace Electrochemical Research and Technology
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