Method of making varistor chip with etching to remove damaged su

Details Method of making varistor chip with etching to remove damaged su Method of making varistor chip with etching to remove damaged su

1995-05-16

1996-10-29

Bareford, Katherine

Coating processes

Spray coating utilizing flame or plasma heat

427101, 427282, 427294, 427309, 427343, B05D 512

Patent

active

055694950

ABSTRACT:
A method of making varistor chips is disclosed. A workpiece of varistor material is sliced into slices of varistor material. The slices are in turn diced to make the varistor chips. The chips are etched in an etchant such as dilute citric acid to remove from their surfaces varistor material damaged during the slicing and/or dicing operations. Otherwise, the damaged varistor material adversely affects the leakage current characteristics of the varistor chips.

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Sonder et al., "ZnO Varistors Made from Powders Produced Using a Urea Process," Am. Ceram. Soc. Bull. 64(4), 665-068 (1985) (no month date).
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