Solid Electrolytic Capacitor for Use at High Temperatures
AssigneeAVX Corporation
InventorsMartin Biler, Jan Petrzilek
Life of this patent
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Abstract
A capacitor that comprises a capacitor element that includes an anode that contains a dielectric formed on a sintered porous body, a solid electrolyte overlying the anode that contains manganese dioxide, and a cathode coating is provided. The cathode coating includes a barrier layer overlying the solid electrolyte and a metallization layer overlying the barrier layer. The barrier layer contains a valve metal and the metallization layer contains a metal that exhibits an electrical resistivity of about 150 nΩ·m or less (at a temperature of 20° C.) and an electric potential of about −0.5 V or more.
Claims24
A capacitor comprising a capacitor element that includes:
- an anode that contains a dielectric formed on a sintered porous body;
- a solid electrolyte overlying the anode that contains manganese dioxide;
- and
- a cathode coating that includes:
- a barrier layer overlying the solid electrolyte, wherein the barrier layer contains a valve metal;
- and
- a metallization layer overlying the barrier layer, wherein the metallization layer contains a metal that exhibits an electrical resistivity of about 150 nΩ·m or less (at a temperature of 20° C.) and an electric potential of about −0.5 V or more.
Dependencies are inferred from the claim text.