High powered over-voltage protection
AssigneeChomerics, Inc.
InventorsPaul J. Malinaric, Vincent Squitieri
Life of this patent
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Abstract
The overload protection material of this invention comprises a plastic preferably an elastomer, e.g. silicone rubber, homogeneously and highly loaded with silicon carbide particles (powder) and a lesser amount of a Group IV B element-carbide particles (powder). The material is preferably form stable and is placed (across) a semiconductor junction or between electrodes of a device to be protected so that when high voltage surges appear across the junction or device to be protected the material breaks down (conducts) before the junction or device is destroyed. The material is bidirectionally conductive in its voltage threshold characteristic and repeatedly recovers unlike a fuse so that it provides continuous high voltage over-voltage (e.g. surge) protection.
Claims17
As an article of manufacture, a threshold voltage conduction material comprising a dielectric plastic binder having dispersed therein particulate silicon carbide and a lesser amount by volume of particulate Group IV B element--carbide.
As an article of manufacture, a threshold voltage conduction material comprising a dielectric plastic binder having dispersed therein particulate silicon carbide and a lesser amount by volume of particulate titanium carbide.
An assembly containing a semiconductor junction and a threshold conducting material coupled in parallel with said junction, said material being form stable and having dispersed therein particulate silicon carbide and a lesser amount by volume of particulate Group IV B element--carbide.
The assembly according to claim, 10 in which the assembly comprises an outer metal casing in which the junction is positioned, an electrode coupled to one side of the junction and the casing coupled to the other side of the junction, the material positioned in electrical contact with said casing and said electrode.
An assembly comprising at least two electrodes or circuit lines having electrically coupled between them a threshold voltage conduction material comprising a dielectric plastic binder having dispersed therein particulate silicon carbide and a lesser amount by volume of particulate Group IV B element--carbide.
Dependencies are inferred from the claim text.