Challenges in converting to lead-free electronicsElectronics Packaging Technology Conference, 2000. (EPTC 2000). Proceedings of 3rd (2000), pp. 6-9.
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AbstractFor effective migration to lead-free electronics, the industry must identify a number of lead-free compatible solders, establish an effective assembly process temperature hierarchy, and have a large number of components that are compatible with this thermal hierarchy. In this paper, we propose a temperature hierarchy for lead-free reflow soldering, discuss the critical factors in developing an optimal lead-free reflow profile, and identify the challenges in making packages compatible with the higher solder temperatures associated with lead-free solders. We also briefly review the lead-free materials direction and challenges for solder ball interconnects, component termination and board finishes
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