To all PCB Design Conqueror's, I have a situation arising in our manufacturing facility. We are finally graduating to bottom side SMT design. I am butting heads with the IE (Industrial Eng.) Dept. on how close we can place via's to bottom side pads for caps and resistor's. Currently we have a horizontal flow with vertical placement of parts running through the wave. I started routing boards with a clearance of .015" in any given direction from the bottom side pads. My IE Dept. wants a minimum of .025" in any direction, without having any source to base this on. Does anyone have a standard that they use or is there a spec that states how far from a bottom side pad a via should be? Thanks. Eric Lucik [log in to unmask] *************************************************************************** * The mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text.* *************************************************************************** * If you are having a problem with the DesignerCouncil, please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************