Reduced ESR through use of multiple wire anode
OwnerBradley Postage, Jeffrey Poltorak +1inventors
InventorsBradley Postage, Jeffrey Poltorak, James Marshall
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Abstract
The ESR of a solid electrolytic capacitor can be decreased by using more than one anode lead or by using an anode lead with a cross-section which is oval or rectangular so as to increase contact area between anode lead and anode compact and reduce the resistance of the lead. The preferred anode is Ta and the preferred wire is Ta.
Claims18
An anode for a capacitor having one anode terminal and one cathode terminal comprising a sintered valve metal compact and more than one anode lead wire.
An anode for a capacitor having one anode terminal and one cathode terminal comprising a sintered valve metal compact and an anode lead wire which has a non-circular cross-section.
A capacitor having one anode terminal and one cathode terminal comprising:
- a) an anode compact formed from a sintered valve metal powder;
- b) at least two solid conductor anode lead wires embedded into said anode compact;
- c) a dielectric formed upon the surface of the anode compact to;
- d) a conductive material in contact with said dielectic to form a cathode.
- e) terminal connected to said cathode to form a cathode terminal;
- and
- f) a capsule formed around the anode and cathode exposing only the respective anode and cathode terminals.
A capacitor having one anode terminal and one cathode terminal comprising:
- a) an anode compact formed from a sintered valve metal powder;
- b) at least one solid conductor anode lead wire having a non-circular cross-section embedded into said anode compact;
- c) a dielectric formed upon the surface of the anode compact;
- d) a conductive material in contact with said dielectic to form a cathode.
- e) a terminal connected to said cathode to form a cathode terminal;
- and
- f) a capsule formed around the anode and cathode exposing only the respective anode and cathode terminal.
In a capacitor having a sintered valve metal anode, a dielectric layer formed upon said anode, a cathode layer in contact with said dielectric layer formed upon said anode, a single anode terminal and a single cathode terminal, the improvement comprising the use of more than one anode lead wire.
In a capacitor having a sintered valve metal anode, a dielectric layer formed upon said anode, a cathode layer in contact with said dielectric layer formed upon said anode, a single anode terminal and a single cathode terminal, the improvement comprising use of an anode lead wire having a non-circular cross-section.
Dependencies are inferred from the claim text.