SCINTILLATION CONDITIONING OF TANTALUM CAPACITORS WITH MANGANESE DIOXIDE CATHODES

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dc.contributor.advisorPecht, Michael Gen_US
dc.contributor.advisorAzarian, Michael Hen_US
dc.contributor.authorFritzler, Thomasen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2013-07-02T05:31:11Z
dc.date.available2013-07-02T05:31:11Z
dc.date.issued2013en_US
dc.description.abstractScintillation testing is a method that activates the self-healing mechanism in tantalum capacitors. In preliminary experiments, the deliberate activation of self-healing yielded up to 27% higher breakdown voltages in weak parts that had an increased risk of ignition failure. This improvement results in a better performance under surge current conditions. This paper demonstrates that scintillation conditioning reduces surge current failures in tantalum capacitors with manganese dioxide cathodes. Tantalum capacitors with MnO2 cathodes from two manufacturers are subjected to scintillation conditioning and compared to non-conditioned populations in a surge current test. To ensure that the activation of the self-healing mechanism has no detrimental effect on the reliability of the parts, a life test is conducted. The results show that the conditioning method increases the breakdown voltage of self-healed tantalum capacitors by up to 25% under surge current conditions, which mitigates the risk of ignition failures. No detrimental effect on the life of the conditioned samples was observed. Additional tests to assess the reliability of tantalum capacitors with manganese dioxide cathodes under simultaneous thermo-mechanical and voltage stresses were performed. Even though these tests are not directly related to scintillation conditioning the study was included as an additional chapter, since it pertains to the general subject of tantalum capacitor reliability.en_US
dc.identifier.urihttp://hdl.handle.net/1903/14217
dc.subject.pqcontrolledMechanical engineeringen_US
dc.subject.pqcontrolledEngineeringen_US
dc.subject.pquncontrolledCapacitorsen_US
dc.subject.pquncontrolledReliabilityen_US
dc.subject.pquncontrolledTantalumen_US
dc.titleSCINTILLATION CONDITIONING OF TANTALUM CAPACITORS WITH MANGANESE DIOXIDE CATHODESen_US
dc.typeThesisen_US

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