Patent ID: 11908599
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A method for manufacturing a varistor, the method comprising:
preparing a sintered body including ZnO as a main component and including an internal electrode disposed in an interior of the sintered body;
forming a precursor layer including SiO2 or silicate such that the precursor layer covers at least part of the sintered body;
applying an external electrode paste including Bi2O3 such that the external electrode paste covers part of the sintered body and is in contact with part of the precursor layer;
performing heat treatment to form an insulating layer including Zn2SiO4 from the precursor layer and to form an external electrode from the external electrode paste.