Resistance component and method for producing a resistance component
AssigneeEpcos AG
InventorFranz Rinner
Life of this patent
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Abstract
A resistance component includes a stack of ceramic layers and inner electrodes. Inner electrodes of a first type are electrically conductively connected to a first external contact and inner electrodes of a second type are electrically conductively connected to a second external contact. The inner electrodes of the first type are arranged such that there is no overlap with the inner electrodes of the second type. An inner electrode of a third type, which is electrically conductively connected neither to the first external contact nor to the second external contact, at least partially overlaps the inner electrodes of the first type and the inner electrodes of the second type.
Claims14
A resistance component, comprising:
- a stack composed of ceramic layers;
- a first external contact;
- a second external contact;
- internal electrodes of a first type, which are electrically conductively connected to the first external contact;
- internal electrodes of a second type, which are electrically conductively connected to the second external contact;
- and
- an internal electrode of a third type, which is electrically conductively connected to neither the first external contact nor the second external contact;
- wherein the internal electrodes of the first type are arranged in a manner free of overlap with the internal electrodes of the second type;
- wherein the internal electrode of the third type at least partly overlaps the internal electrodes of the first type and the internal electrodes of the second type;
- and
- wherein, for each internal electrode of the third type, at least three internal electrodes of the first type and three internal electrodes of the second type are provided, wherein the resistance component is an NTC thermistor component and wherein the mathematical relationship
- 0.10≦(R25·b·h)/(ρ·l)≦0.20
- holds true for the component, where l is a length of the component, b is a width of the component, h is a height of the component, R25 is an electrical resistance of the component at a nominal temperature of 25° C. and ρ is a resistivity of the ceramic layers.
Dependencies are inferred from the claim text.