Dennis 

The statement about "Hole wall dielectric/plated hole separation" is a direct
carry over from IPC-RB-276 Table 10 which as been in existence since 1992. It
is the intent to allow hole-hole-wall-pullaway to any extent as long as the
hole is not collapsed and the function is not degraded.  This was a change
from IPC-ML-950 which only allowed 40% hole-wall-pullaway.  This is the first
time any question has come up since RB-276 was issued and the suppliers and
users seem satisfied.

Phil Hinton 
[log in to unmask]  

***************************************************************************
* TechNet 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.        *
***************************************************************************