Lessons learnt from lead-free soldering implementation - real example

Abstract

This paper presents the practical requirements of implementing the lead-free soldering process, which include the material requirement with the summary of supplier positions and directions, design concern, process setup, qualification procedure and the common defects handling, also the way to handle tin whisker even without the industrial standard at the moment. The key issue is that lead-free wave soldering is no longer a mystery, what you need is to start up with the right approach with correct machine and material selection, then fine tune the process which is similar to the tin-lead process. Most important thing is always keeping an eye on the process deviation.