SMTA International Conference Proceedings


Effect Of Warpage On SMT Process Of Pop Package And Its Solution

Authors: Stephen Guo, Fubin Song, Jeff Qi and James Huang; and Alex Chen
Company: Celestica Inc.
Date Published: 10/13/2013   Conference: SMTA International


Abstract: In spite of the success has been made in PoP technology in the industry today, there are still some process / reliability issues in PoP package assembly. The warpage is more popular one among these issues. In this paper, the effect of the PoP warpage on the SMT process and its solution will be discussed in details. Warpage measurement and the related failure analysis will be performed as well. In addition, the optimization of SMT process will be introduced, including stencil design, solder paste selection, reflow profile optimization, and nitrogen application.

Key Words: 

Package on Package (PoP), Warpage, SMT process



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