Eric,

Before I can reply to your question, I need to ask a few things:
1) Are you using solder mask over top of your vias?
2) If not, what size are the pad & hole of your vias?
3) Are you differentiating between pads & vias on the same net to pads & vias
on different nets?

Figure 3-24 in the IPC-SM-782 SMD and Land Pattern Standard (pages 26-29) may
give some of the answers you need.

Gary Shoemaker

***************************************************************************
*   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]      *
***************************************************************************