Method of making varistor chips

Details Method of making varistor chips Method of making varistor chips

H - Electricity

01

C

H01C 17/00 (2006.01) H01C 17/24 (2006.01)

Patent

CA 2220931

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.

Procédé de fabrication de puces de varistance. Une pièce de matériau de varistance est sciée en tranches. A leur tour, les tranches sont découpées pour obtenir les puces de varistance. Lesdites puces sont attaquées dans un réactif d'attaque tel que de l'acide citrique dilué afin d'éliminer de leurs surfaces le matériau endommagé pendant les opérations de sciage et de découpage. Sinon, le matériau endommagé aurait des effets négatifs sur les caractéristiques de courant de fuite desdites puces de varistance.

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