>> A friend got burned by poor plating a long time ago, and on his protos, >> insists on filling the vias with solder- just in case the plating was >> poor. Valid, but I haven't seen a bad via on my boards in years- if the >> vias are that bad, there probably are other problems. > >That would be either a very long time ago while the process was getting we= ll sorted, or it was a manufacturer just setting up PTH process, and not ye= t familiar with the process control requirements. If one has a problem with= via quality these days then the manufacturer should be shouted at very lou= dly. You may want to solder-fill vias to help in high current or high thermal lo= ad situations, on flow-soldered PCBs, although relying on it would probably mean you'd want = to inspect to make sure they got filled. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .