Package cracking during reflow soldering is a critical issue for the reliability of plastic encapsulated semiconductor devices. In the case of a conventional package structure, the adhesion strength at the interface between the metal die-pad and the resin drops rapidly for high temperature and humidity. This is a major cause of package cracking. So, a new packaging structure, the chip side support (CSS) structure was introduced. The reliability of the CSS structure package was evaluated by executing the adhesion strength measurement of the interface in the packages, reflow soldering test, temperature cycle test (TCT) and high humidity storage test. The results of these tests indicated that the CSS structure package was superior to conventional packages. The CSS structure package realizes a crack-free package without moisture-proof packing by dispensing with the die-pad and adopting a thinner package thickness.
|出版ステータス||Published - 1995 12 1|
|イベント||Proceedings of the 1995 IEEE/CPMT 18th International Electronic Manufacturing Technology - Omiya, Jpn|
継続期間: 1995 12 4 → 1995 12 6
|Other||Proceedings of the 1995 IEEE/CPMT 18th International Electronic Manufacturing Technology|
|Period||95/12/4 → 95/12/6|
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