Power surge resistor with palladium and silver composition
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorOrville W. Brown
Life of this patent
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Abstract
Power surge resistor containing palladium/silver, glass and dopant(s) are described for use in the manufacture of power surge resistor devices employed for power surge protection applications. The resultant surge resistors are characterized in their ability to dissipate repeated voltage surges equal in voltage and duration to surges created by lightning with less than 0.05% change in sheet resistance.
Claims7
A surge resistor device comprising a printed linear serpentine pattern of resistor paste, fired and fused on a substrate, said device exhibiting a resistance ranging from 0.1 to 20 ohms/square, wherein the resistor paste comprises in combination (a) about 38-60 parts of palladium and silver, (b) 6-20 parts of glass frit, (c) 1-20 parts of dopant, (d) 2-6 parts of binder and 18-25 parts of vehicle, wherein the dopant component includes at least 1 part tungsten, to total 100 parts by weight of the paste.
Dependencies are inferred from the claim text.