Failure of polymer-metal interfaces under hygrothermal loading

Andrew A. O. Tay; Y. Ma; Sim Heng Ong

doi:10.1117/12.382306

10 April 2000 Failure of polymer-metal interfaces under hygrothermal loading

Andrew A. O. Tay, Y. Ma, Sim Heng Ong

Proceedings Volume 4019, Design, Test, Integration, and Packaging of MEMS/MOEMS; (2000) https://doi.org/10.1117/12.382306
Event: Symposium on Design, Test, Integration, and Packaging of MEMS/MOEMS, 2000, Paris, France

Abstract

This paper describes a study of the failure of polymer-metal interfaces in plastic-encapsulated IC packages subjected to hygro-thermal loading during solder reflow. All the analyses performed are under plane strain conditions. A finite element fracture mechanics approach was employed to predict the temperature at which a small delamination in the polymer-metal interface of an IC package will propagate. In order to confirm the accuracy of the above prediction, actual package specimens were fabricated and subjected to various levels of moisture preconditions followed by thermal loading at varying temperatures. The specimens were then examined to determine the temperature at which the interface failed. Good agreement was found between numerical prediction and experiment.

Citation Download Citation

Andrew A. O. Tay, Y. Ma, and Sim Heng Ong "Failure of polymer-metal interfaces under hygrothermal loading", Proc. SPIE 4019, Design, Test, Integration, and Packaging of MEMS/MOEMS, (10 April 2000); https://doi.org/10.1117/12.382306

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