hmmmm.... good question.  and I have no clue as to reliability. I wonder why
someone would do that in the first place unless it was reworking a mistake.
This is a new one on me.

Ed Cosper


-----Original Message-----
From: [log in to unmask] <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Monday, July 26, 1999 1:12 PM
Subject: [TN] NI/AU UNDER BETWEEN COPPER


>I just looked at a product where the manufacturer has managed to
>overplate nickel/gold with copper.  This occurs on the surface conductors
>and also in holes.
>
>I have looked in the design and board documents, but cannot find anything
>that addresses the reliability of such a condition.  I know putting a
>"meltable"
>material between layers of copper can wreak havoc, but what about
>ni/au?
>
>Susan Mansilla
>Robisan Lab
>
>##############################################################
>TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
>##############################################################
>To subscribe/unsubscribe, send a message to [log in to unmask] with following
text in
>the body:
>To subscribe:   SUBSCRIBE TECHNET <your full name>
>To unsubscribe:   SIGNOFF TECHNET
>##############################################################
>Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
additional
>information.
>If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
>847-509-9700 ext.5365
>##############################################################
>

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################