I have seen variable potentials affects the surface finish with electroless
Ni/Au. At least that is what the chemistry provider was claiming was causing
isolated fingers in a group would be dull. It was always the same fingers
from board to board.  The metal thicknesses were not effected (measured with
beta backscatter).  We would burnish the pads to the same matte finish with
a fiber brush.  This was back in the 80's and I thought the problem had been
resolved with improved chemistries.

-----Original Message-----
From: Anslow, Phillip [mailto:[log in to unmask]]
Sent: Tuesday, August 24, 2004 9:37 AM
To: [log in to unmask]
Subject: [TN] ENIG and Electrical Test


Has anyone heard of "floating voltages" on certain nets of a C-I-C cored
power board affecting the ENIG process?
It's not Friday, it's not April but I'm wondering if anyone has had
experience of this phenomenon from a PCB fabricator before - of have we
stumbled across an answer for lead-free batteries?
TIA - Phil.

********************************************************************
This email and any attachments are confidential to the intended
recipient and may also be privileged. If you are not the intended
recipient please delete it from your system and notify the sender.
You should not copy it or use it for any purpose nor disclose or
distribute its contents to any other person.
********************************************************************

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
-----------------------------------------------------

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------