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Thick-film and LTCC microvaristors

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3 Author(s)
Edward Mis ; Faculty of Microsystem Electronics and Photonics, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland. e-mail: ; Andrzej Dziedzic ; Witold Mielcarek

ZnO-based varistors are frequently used for electronic circuits overvoltage protection. Such material requires sintering at temperatures of 1150degC-1300degC. Lowering it to the typical range 850degC-950degC used in thick-film and LTCC technology is desirable. ZnO-based paste was prepared and exploited for varistors fabrication on alumina and LTCC substrate. Different component topologies, materials for electrodes and firing profiles were used. I-V characteristics of varistors as well as long term stability and durability to high voltage pulses were investigated. Satisfactory results were achieved.

Published in:

2007 30th International Spring Seminar on Electronics Technology (ISSE)

Date of Conference:

9-13 May 2007