Bellcore TR-NWT-000078 in paragraph 6.2.1.2.4 recommends that 
     non-functional pads exist on every conductor layer. Yet all CAM 
     systems have a non-functional pad removal function.  Some board 
     manufacturers use this functional automatically  Most board shops, I 
     think, would like to use this function.  
     
     My question:
     Does there exist a statistically significant study on the reliability 
     of boards that do not have the non-functional pads?  If so, is this 
     study published?
     
     
     Regards,
     Jamie Baumgart, DSC Communications
     [log in to unmask]