I made bare PCB's for a well known European MRI company which had a
finish of Leaded HASL. They then switched to immersion Silver with no
issues.

Curious though, what about the plated nickel on your component
leads/legs etc?

Colin W.T. McVean M.Inst.C.T                                
Production Manager
 
 
Artetch Circuits Ltd  (www.artetch.co.uk)
Direct Dial      01903 712926
Switch Board  01903 725365
Skype: colin.artetch                                           
40th Anniversary 1967 - 2007
P Before printing , please think about the Environment       
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Wood, Kenneth
Sent: 21 June 2007 14:46
To: [log in to unmask]
Subject: [TN] PCB Finish

Hey all, 
Question:
I design PCB's for MRI use so Nickel is no good because it is magnetic.
Is there a standard finish I can use that does not whisker like tin, has
no
nickel like ENIG and can be made by anyone (most at least).
What about Silver? 
Thanks
Ken
 
__________________________________________

Kenneth Wood
Senior PCB Designer
Invivo Corp.
12601 Research Parkway
Orlando, FL 32826
Phone: 407-275-3220 ext. 179
Mobile: 407-340-2668
Fax: 321-239-1910
Email:  <mailto:[log in to unmask]> [log in to unmask]
Internet:  <http://www.invivocorp.com/> http://www.invivocorp.com

 
------------------------------------------------------------------------
--------
This email and any files transmitted with it are intended only for the
use of 
the individual or entity to which it is addressed and may contain
information 
that is proprietary, confidential and exempt from disclosure under
applicable 
law. If the reader of this message is not the intended recipient, or the

employee or agent responsible for delivering the message to the intended

recipient, you are hereby notified that any dissemination, distribution
or 
copying of this communication is strictly prohibited. If you have
received this 
communication in error, please delete it and notify us immediately.
------------------------------------------------------------------------
--------


---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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 847-615-7100
ext.2815
-----------------------------------------------------

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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 847-615-7100 ext.2815
-----------------------------------------------------