High-temperature lead-free solder alloy
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United States of America Patent
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Oct 24, 2017
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Jul 29, 2013
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Aug 10, 2012
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Abstract
Provided is a high-temperature lead-free solder alloy having excellent tensile strength and elongation in a high-temperature environment of 250° C. In order to make the structure of an Sn—Sb—Ag—Cu solder alloy finer and cause stress applied to the solder alloy to disperse, at least one material selected from the group consisting of, in mass %, 0.003 to 1.0% of Al, 0.01 to 0.2% of Fe, and 0.005 to 0.4% of Ti is added to a solder alloy containing 35 to 40% of Sb, 8 to 25% of Ag, and 5 to 10% of Cu, with the remainder made up by Sn.
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