Non-linear electrical resistor having varistor characteristics

Details Non-linear electrical resistor having varistor characteristics Non-linear electrical resistor having varistor characteristics

1984-04-06

1986-09-16

Bell, Mark L.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

501136, 252521, H01B 106, C04B 3546

Patent

active

046121404

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.

REFERENCES:
patent: 4101454 (1978-07-01), Kulwicki et al.
patent: 4119554 (1978-10-01), Fujiwara
patent: 4309295 (1982-01-01), McSweeney
patent: 4419310 (1983-12-01), Burn et al.
patent: 4438214 (1984-03-01), Masuyama et al.

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