In answer to your questions regarding cross sections:

1) from expierence backlightlight sections were evaluated 4 times per shift to 
check electroless copper coverage. This was monitored using SPC methods by 
counting the number of pinholes visible.

2) Microsections were taken from every batch of boards plated, generally from 
coupons. Actual panels were used for first off evaluations. Non-destructive 
testing was not used after electrolytic copper plating.

Kenny Travers

Digital.

********************************************************************************
I'm looking for some input from board fabricators.

1. Does anyone cross section after electroless as a routine? If so, how
often?

2. How frequently do you cross section after pattern plate? Do you use
coupons or actual parts? If you use both, what is the ratio, coupons/actual
parts? What is the frequency? How much do you rely on nondestructive testing?

Thanks in advance for your input.

David Pizzoferrato
QA Manager
Centerline Circuits


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