Lead-free solder alloys and solder joints thereof with improved drop impact resistance
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United States of America Patent
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Feb 16, 2016
Grant Date -
Jun 14, 2007
app pub date -
Dec 6, 2006
filing date -
Dec 13, 2005
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Abstract
Lead-free solder alloys and solder joints thereof with improved drop impact resistance are disclosed. In one particular exemplary embodiment, the lead-free solder alloys preferably contain 0.0-4.0 wt. % of Ag, 0.01-1.5 wt. % of Cu, at least one of the following additives: Mn in an amount of 0.001-1.0 wt. %, Ce in an amount of 0.001-0.8 wt. %, Y in an amount of 0.001-1.0 wt. %, Ti in an amount of 0.001-0.8 wt. %, and Bi in an amount of 0.01-1.0 wt. %, and the remainder of Sn.
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