This project was organized to assess the process parameters for assembling Pb-free SnAgCu BGAs under the temperature constraints of a conventional tin-lead (SnPb) assembly process. The objective was to understand the reliability of the resulting mixed-alloy solder joints. The first phase of the project characterized the peak temperature effects on Pb-free BGAs in SnPb paste. The second phase studied the reliability of Pb-free BGAs processed within the temperature constraints of SnPb assembly conditions.
Presentation: The Pb-Free SnAgCu Ball Grid Array (BGA) Components in SnPb Assembly Process: Process Characterization and Solder Joint Reliability, R. Kinyanyui (Sanmina-SCI), Q. Chu (Jabil Circuit, Inc.), October 4, 2007