Non-linear electrical resistor having varistor characteristics
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United States of America Patent
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Sep 16, 1986
Grant Date -
N/A
app pub date -
Apr 6, 1984
filing date -
Apr 8, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A ceramic composition for use in production of non-linear resistors. This composition comprises strontium titanate (or a mixture containing strontium titanate as a major ingredient) and 0.1 to 1.0 mol % of Er.sub.2 O.sub.3, Ho.sub.2 O.sub.3 or mixtures thereof. In a preferred composition 0.02 to 0.2 mol % of at least one of MnO.sub.2, Co.sub.2 O.sub.3 or mixtures thereof are included. Non-linear resistors produced using the composition are comparable to those produced from conventional ceramic compositions in the threshold level voltage and non-linear factor but have greatly improved flexural strength.
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