Material and paste for producing internal electrode of varistor,

Details Material and paste for producing internal electrode of varistor, Material and paste for producing internal electrode of varistor,

1999-03-17

2000-11-14

Easthom, Karl D.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

252514, H01C 713

Patent

active

061475882

ABSTRACT:
The present invention provides a varistor which has low variation in electric characteristics and enhanced withstand electrostatic voltage and which can be fired at low temperature; as well as a method for producing the same. The laminated varistor comprises a sintered laminate formed by laminating alternating layers of semiconducting ceramic which comprises ZnO as a primary component and at least Bi oxide as a secondary component, and internal electrodes which predominantly comprise Pt and Pd as an inevitable impurity; and external electrodes maintaining electrical contact with the internal electrodes, wherein the Pd content is controlled to be about 0.1 wt. % or less based on the content of Pt, which is a primary component of the internal electrodes.

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