Electronic Component Termination and Assembly by Means of Transient Liquid Phase Sintering Metalurgical Bonds
AssigneeKemet Electronics Corporation
InventorsJOHN E. MCCONNELL, GARRY L. RENNER, JOHN BULTITUDE
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Abstract
An improved method for forming a capacitor is provided as is a capacitor, or electrical component, formed by the method. The method includes providing an aluminum containing anode with an aluminum oxide dielectric thereon; forming a cathode on a first portion of the aluminum oxide dielectric; bonding an anode lead to the aluminum anode on a second portion of the aluminum oxide by a transient liquid phase sintered conductive material thereby metallurgical bonding the aluminum anode to the anode lead; and bonding a cathode lead to said cathode.
Claims57
A method for forming a capacitor comprising:
- providing an aluminum containing anode with an aluminum oxide dielectric thereon;
- forming a cathode on a first portion of said aluminum oxide dielectric;
- bonding an anode lead to said aluminum anode on a second portion of said aluminum oxide by a transient liquid phase sintered conductive material thereby metallurgical bonding said aluminum anode to said anode lead;
- and
- bonding a cathode lead to said cathode.
An MLCC capacitor comprising:
- first planer internal aluminum or aluminum alloy electrodes in electrical contact with a first external termination;
- second planer internal aluminum or aluminum alloy electrodes interleaved with said first planer electrodes wherein said second internal electrodes are in electrical contact with a second external termination;
- a dielectric between said first planer internal electrodes and said second planer internal electrodes;
- and
- at least one of said first external termination or said second external termination comprises a transient phase sintering metallurgical bond.
An electrical component comprising:
- an aluminum or aluminum alloy layer;
- a lead in contact with said aluminum or aluminum alloy layer;
- and
- wherein said contact comprises a metallurgical bond with said aluminum or aluminum alloy layer wherein said metallurgical bond comprises transient liquid phase sintering material.
An MLCC capacitor comprising:
- first planer internal electrodes in electrical contact with a first external termination wherein said first external termination comprises aluminum or aluminum alloy;
- second planer internal electrodes interleaved with said first planer electrodes wherein said second internal electrodes are in electrical contact with a second external termination;
- a dielectric between said first planer internal electrodes and said second planer internal electrodes;
- a first lead in electrical contact with said first external termination;
- and
- wherein said first external termination is attached to said first lead by a transient liquid phase sintering material.
Dependencies are inferred from the claim text.