Electronic component termination and assembly by means of transient liquid phase sintering metalurgical bonds
First Claim
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1. A multilayered ceramic capacitor (MLCC) 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.
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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.
23 Citations
36 Claims
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1. A multilayered ceramic capacitor (MLCC) comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electrical component comprising:
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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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A multilayered ceramic capacitor (MLCC) comprising:
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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; wherein said first external termination is attached to said first lead by a transient liquid phase sintering material; and
wherein said first planer internal electrodes are aluminum or aluminum alloy and said first external termination is a metallurgical bond to said first planer internal electrodes. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification