Molex is making a change to the plating for some of their RAST 5 family of PCB Headers. Plating will be changing from 5 micron SN over 2.5 micron NI to 3 micron SN over 1.27 micron NI. Depending on inventory, both new and older versions may be supplied during transition. Please contact a Mouser Technical Sales Representative for further assistance. 5-1212-21