Second-breakdown characteristics of metal-oxide varistors

J. J. Lee; J. K. O’Brien; M. S. Cooper

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Journal of Applied Physics

Article . 1977 . Peer-reviewed

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https://dx.doi.org/10.1063/1.3...

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Second-breakdown characteristics of metal-oxide varistors

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1977 English Publisher:AIP PublishingJournal:Journal of Applied Physics, volume 48, pages 1,252-1,257 (issn: 0021-8979, eissn: 1089-7550,

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Authors: J. J. Lee; J. K. O’Brien; M. S. Cooper;

doi: 10.1063/1.323767

Second-breakdown characteristics of metal-oxide varistors

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Abstract

Several new results on the electrical breakdown properties of ZnO-based ceramic varistors are presented. A second-breakdown phenomenon associated with thermal runaway and characterized by a negative differential conductivity was observed in dc tests. The curve of capacitance versus bias current exhibited hysteresis while the I-V characteristics became nonsymmetric and showed rectification after second breakdown.

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