We have been experiencing sporadic cracks in plated copper but don't know
where they come from. The problem is that after LPI they look like a break
through the whole trace. After microsectioning many of these we have found
that it never goes through the base copper - only plated copper. Has anyone
experienced this and if so what causes this and how is it corrected?

Thanks,
Jim 

***************************************************************************
* 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.        *
***************************************************************************