Influence of underfill materials on the
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Chun-Chih Chuang; Tsung-Fu Yang; Jin-Ye Juang; Yin-Po Hung; Chau-Jie Zhan; Yu-Mi
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Article
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2008
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Elsevier Science
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English
โ 903 KB
A flip chip package was assembled by using 6-layer laminated polyimide coreless substrate, eutectic Sn37Pb solder bump, two kinds of underfill materials and Sn 3.0 Ag 0.5 Cu solder balls. Regarding to the yield, the peripheral solder joints were often found not to connect with the substrate due to t