A Comparative Study of Thermal Conductivity in ZnO- and SnO2-Based Varistor Systems

We performed a comparative study of electrical and thermal properties of ZnO‐ and SnO2‐based varistor. The electrical properties of commercial ZnO‐based varistor are equivalent to that found in SnO2‐based varistor system. In spite of this, the SnO2 showed a thermal conductivity higher than commercia...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2005-09, Vol.88 (9), p.2629-2631
Main Authors: Bueno, P. R., Varela, J. A., Barrado, C. M., Longo, E., Leite, E. R.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Conductors, resistors (including thermistors, varistors, and photoresistors)
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Electrotechnical and electronic ceramics
Exact sciences and technology
Technical ceramics
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Summary:We performed a comparative study of electrical and thermal properties of ZnO‐ and SnO2‐based varistor. The electrical properties of commercial ZnO‐based varistor are equivalent to that found in SnO2‐based varistor system. In spite of this, the SnO2 showed a thermal conductivity higher than commercial samples of ZnO‐based varistor, which allied with its simpler microstructure and lower dopant concentration is a remarkable result that point out to the use of this system to compete commercially with ZnO‐based varistor devices.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2005.00469.x