Fellow TechNetters: What are some bench mark thicknesses for solder mask coverage over external conductors/signals. I have not seen an actual value in any of the IPC STD that I have read, IPC-2222, IPC-6012, IPC-SM-840. I believe that that are three different manufacturers. Victor, ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________