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- W1978103498 endingPage "1881" @default.
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- W1978103498 abstract "A flip chip package was assembled by using 6-layer laminated polyimide coreless substrate, eutectic Sn37Pb solder bump, two kinds of underfill materials and Sn3.0Ag0.5Cu solder balls. Regarding to the yield, the peripheral solder joints were often found not to connect with the substrate due to the warpage at high temperature, modification of reflow profile was benefit to improve this issue. All the samples passed the moisture sensitive level test with a peak temperature of 260 °C and no delamination at the interface of underfill and substrate was found. In order to know the reliability of coreless flip chip package, five test items including temperature cycle test (TCT), thermal shock test (TST), highly accelerated stress test (HAST), high temperature storage test (HTST) and thermal humidity storage test (THST) were done. Both of the two underfill materials could make the samples pass the HTST and THST, however, in the case of TCT, TST and HAST, the reliability of coreless flip chip package was dominated by underfill material. A higher Young’s modules of underfill, the more die crack failures were found. Choosing a correct underfill material was the key factor for volume production of coreless flip chip package." @default.
- W1978103498 created "2016-06-24" @default.
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- W1978103498 date "2008-11-01" @default.
- W1978103498 modified "2023-09-23" @default.
- W1978103498 title "Influence of underfill materials on the reliability of coreless flip chip package" @default.
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- W1978103498 doi "https://doi.org/10.1016/j.microrel.2008.09.005" @default.
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