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MODIFICATION OF PB-FREE SOLDER ALLOY COMPOSITIONS TO IMPROVE INTERLAYER DIELECTRIC DELAMINATION IN SILICON DEVICES AND ELECTROMIGRATION RESISTANCE IN SOLDER JOINTS
MODIFICATION OF PB-FREE SOLDER ALLOY COMPOSITIONS TO IMPROVE INTERLAYER DIELECTRIC DELAMINATION IN SILICON DEVICES AND ELECTROMIGRATION RESISTANCE IN SOLDER JOINTS
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机译:修改无铅无铅合金成分,以改善硅器件中的层间介电分层和焊点的耐电蚀性
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摘要
A solder joint comprising a solder capture pad on a substrate having a circuit; and a lead free solder selected from the group comprising Sn—Ag—Cu solder and Sn—Ag solder adhered to the solder capture pad; the solder selected from the group comprising between 0.1 to 2.0% by weight Sb or Bi, and 0.5 to 3.0% Ag. Formation of voids at an interface between the solder and the solder capture pad is suppressed, by including Zn. Interlayer dielectric delamination is suppressed, and electromigration characteristics are greatly improved. Methods for forming solder joints using the solders.
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