Patent ID: 6259349
Filing Date: 2001-07-10
Classification: H01C

Abstract:
An electrical component comprising:a PTC polymer element and external contacts applied to the PTC polymer element and defining a main direction of a current flow in a section of the PTC polymer element, the section of the PTC polymer element comprising a plurality of rhombic recesses in the PTC polymer element and at least one constriction formed in the material of the PTC polymer element and extending perpendicular to the main direction of the current flow;wherein in a longitudinal sectional plane extending parallel to the main direction of the current flow, each at least one constriction is formed between two of the plurality of rhombic recesses, wherein a) first and second opposite vertices of each of the two rhombic recesses are aligned parallel to the main direction of the current flow, b) the third and fourth opposite vertices of each of the two rhombic recesses are aligned along a single axis perpendicular to the main direction of current flow so that the narrowest part of the constriction lies between the two rhombic recesses along the single axis perpendicular to the main direction of current flow, and c) an angle of each of the first and second opposite vertices of each of the two rhombic recesses is greater than 100.degree..