Susan:

Don't have an answer, but someone out there probably does.  Is this a high
frequency/controlled impedance application?  If so will the metallic interface have an
effect on the characteristic impedance or cause reflections?

Don Vischulis
[log in to unmask]

[log in to unmask] wrote:

> 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
>

Snip_________________________________________

##############################################################
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
##############################################################