PTCR-resistor

Details PTCR-resistor PTCR-resistor

1999-04-21

2000-11-07

Donovan, Lincoln

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

296101, H01C 710

Patent

active

061442860

ABSTRACT:
A Positive Temperature Coefficient of Resistance resistor includes a ceramic material of the composition [(Ba.sub.1-e-x Sr.sub.x R.sub.e).sub.1-a M.sub.a ][(Ti.sub.1-b-d N.sub.b Q.sub.d)].sub.c O.sub.3, wherein M is a trivalent or quadrivalent element or a mixture of two or several of these elements; N is a quinquevalent or hexavalent element or a mixture of two or several of these elements; Q is a quadrivalent element or a mixture of two or several of these elements; R is a bivalent element or a mixture of two or several of these elements; and 0.5.ltoreq.x.ltoreq.1, a is 0 or 0.0003.ltoreq.a.ltoreq.0.3, and b is 0 or 0.0003.ltoreq.b.ltoreq.0.3, 0.8.ltoreq.c.ltoreq.1.2, 0.ltoreq.d.ltoreq.0.2, and 0.ltoreq.e.ltoreq.0.2.

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B. Huybrechts et al., "Review: The Positive Temperature Coefficient of Resistivity in Barium Titanate," Journal of Materials Science, No. 30, (1995) pp. 2463-2474. No Month.
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