As many must be aware a number of component manufactuers maybe shipping lead-free parts without part number changes. without knowing the datecode tracked on each component it would be difficult to trace components whether they are lead-free or tin-lead. A number of contract houses do the tape and reel service
Any suggestions on how these manufacturers are managing to prevent mixing lead and lead-free parts that do not have part number change ? How would a complex manufaturing line with high mix low volume be able to keep a track of all the different terminations that floating around as " lead-free "