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US 8,552,831 B2Granted
Chip varistor
AssigneeTDK Corporation
InventorsKaname Ueda, Katsunari Moriai, Takahiro Itami
Life of this patent
Estimating the term…
Abstract
A chip varistor is provided with a varistor section and a plurality of terminal electrodes. The varistor section is comprised of a sintered body containing ZnO as a major component, exhibits the nonlinear voltage-current characteristics, and has a pair of principal surfaces opposed to each other. The plurality of terminal electrodes are connected each to the varistor section. Each of the terminal electrodes has a first electrode portion connected to either of the principal surfaces and a second electrode portion connected to the first electrode portion.
Claims6
A chip varistor comprising:
- a varistor section comprised of a sintered body containing ZnO as a major component, configured to exhibit the nonlinear voltage-current characteristics, and having a pair of principal surfaces opposed to each other;
- and
- a plurality of terminal electrodes connected to the varistor section,
- wherein each of said terminal electrodes has a first electrode portion connected to either of the principal surfaces and a second electrode portion connected to the first electrode portion,
- wherein the varistor section includes a first region where at least one element selected from the group consisting of alkali metals, Ag, and Cu exists, and a second region extending between the pair of principal surfaces and containing no element selected from the group consisting of alkali metals, Ag, and Cu, and
- wherein the first electrode portions are connected to the second region.
3 more elements
Dependencies are inferred from the claim text.