Subject: | |
From: | |
Reply To: | |
Date: | Fri, 18 Nov 2005 18:28:08 -0500 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
Lee
Kudos from a long time lurker......
You're absolutely correct. Many many years of OEM experience with this
finish. Lots of fear over purported high cost of gold. There's a few
"application" secrets but it is the ultimate surface finish.
Now that the cat is out of the bag, how come you didn't mention immersion
silver?
Gerry Gagnon
From: Lee parker <[log in to unmask]>
Reply-To: TechNet E-Mail Forum <[log in to unmask]>, Lee parker
<[log in to unmask]>
To: [log in to unmask]
Subject: Re: [TN] best plated surface finish
Date: Wed, 16 Nov 2005 08:25:34 -0500
John
Another option is flash gold over nickel. Both are plated inline using an
electrolytic process(as opposed to ENIG). The gold thickness is roughly two
micro inches. The OEMs that I am familiar with that have used this finish
have reported very good results.
Most of the PCB suppliers providing this process are in China.
Best regards
Lee
J. Lee Parker, Ph.D.
JLP Consultants LLC
804 779 3389
----- Original Message -----
From: Babcock John<mailto:[log in to unmask]>
To: [log in to unmask]<mailto:[log in to unmask]>
Sent: Tuesday, November 15, 2005 7:28 PM
Subject: [TN] best plated surface finish
If somebody wants an extra smooth plating finish using lead free plating
what material would they use...and what would be the finishing process?
I've heard HASL is sort of rough...and it really doesn't apply using
silver solder because of the melting temps.
Is ENIG (electroless nickel immersion gold) the way to go to get a
smooth finish?
thanks!
John Babcock
PCB Designer III
Isothermal Systems Research (ISR)
2218 N. Molter Rd
Liberty Lake, WA 99019
[log in to unmask]<mailto:[log in to unmask]>
P: (509) 241-4641
F: (509) 444-1082
This E-mail and any files transmitted with it are confidential and
proprietary in nature and intended solely for the use of the individual
to whom it is addressed. If you have received this E-mail in error,
please send it back to the person that sent it to you. Any views or
opinions presented are solely those of its author and do not necessarily
represent those of Isothermal Systems Research, Inc. Unauthorized
publication, use, dissemination, forwarding, printing or copying of this
email and its associated attachments is strictly prohibited. Thank you
for your cooperation.
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to
[log in to unmask]<mailto:[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]<mailto:[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]<mailto:[log in to unmask]>: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives<http://listserv.ipc.org/archives>
Please visit IPC web site
http://www.ipc.org/contentpage.asp?Pageid=4.3.16<http://www.ipc.org/contentpage.asp?Pageid=4.3.16>
for additional information, or contact Keach Sasamori at
[log in to unmask]<mailto:[log in to unmask]> or 847-615-7100 ext.2815
-----------------------------------------------------
---------------------------------------------------
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
847-615-7100 ext.2815
-----------------------------------------------------
_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE!
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
---------------------------------------------------
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 847-615-7100 ext.2815
-----------------------------------------------------
|
|
|