Solid electrolyte capacitor package with an exothermically-alloyable fuse
AssigneeSprague Electric Company
InventorsGeorge A. Shirn, John P. Maher
Life of this patent
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Abstract
A fuse for a solid electrolyte capacitor is made of two exothermically alloyable metals such as aluminum and palladium. The fuse has a series electrical connection with and a thermal connection to the capacitor body. A defective and overheated capacitor section results in abnormally high currents so that the fuse temperature is elevated by ohmic self-heating and/or by the flow of heat from the overheated body. When the alloying temperature of the fuse is reached, the temperature of the alloying fuse momentarily becomes very high and opens essentially along its entire length.
Claims15
A fused capacitor package including a solid electrolyte capacitor body having two terminals, a housing enclosing said body and two leads extending to the outside of said housing, wherein the improvement comprises a fuse made of two exothermically alloyable elements in intimate contact with each other;
- said fuse being enclosed by said housing, and being connected between one of said terminals and one of said leads, and thus having a series electrical connection with said body, the other of said leads being connected to the other of said terminals, said fuse having a thermal connection to said capacitor body.
Dependencies are inferred from the claim text.