SILVER-TIN COATING FOR ELECTRICAL CONNECTORS, AND ELECTRICAL CONNECTORS WITH SILIVER-TIN COATINGS
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United States of America
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Issued Date -
Jan 30, 2025
app pub date -
Dec 2, 2022
filing date -
Dec 2, 2022
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Abstract
A copper alloy electrical connector component has a coating thereon formed by applying a nickel layer of between about 5 μin and about 20 μin over the copper alloy; applying a copper layer of between about 7 μin and about 18 μin over the nickel layer; applying a total of between about 5 μin and about 15 μin silver layers and about 40 μin and about 80 μin of tin layers over the copper layer: and heating to the coated copper alloy electrical connector component to cause mixing of the silver and tin layers and formation of at least 8 vol % of an Ag3Sn intermetallic.
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