Patent ID: 11901100
Assignee: TDK ELECTRONICS AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for manufacturing a multilayer varistor, the method comprising:
providing a first ceramic powder for producing a first ceramic material and at least one second ceramic powder for producing a second ceramic material, wherein the ceramic powders differ from each other in concentration of monovalent elements X+ by 50 ppm≤Δc(X+)≤5000 ppm, wherein X+=(Li+, Na+, K+ or Ag+), and wherein Δc denotes a maximum concentration difference occurring between an active region and a near-surface region of the multilayer varistor;
slicking of the ceramic powders and forming of green films;
partially printing of a part of the green films with a metal paste to form inner electrodes;
stacking printed and unprinted green films;
laminating, decarbonizing and sintering the green films; and
applying outer electrodes.