Itīs hard I believe to get the most popular finish for leadfree especially
regarding future trends.
So letīs talk about my favorite and the number of boards produced over one
year.
Maybe thatīll bring some figures to compare or to discuss.
Well, for me itīs Ni/Au with 5000PCB/year.
Good luck
Wolfgang
-----Ursprüngliche Nachricht-----
Von: Wenger, George M (George) [mailto:[log in to unmask]]
Gesendet am: Montag, 15. Oktober 2001 15:11
An: [log in to unmask]
Betreff: Re: [TN] Lead Free Surface finishes
Graham,
The most popular surface finish for us Lucent/Celiant is Immersion Silver.
Regards,
George
George M. Wenger (609) 639-3210 [log in to unmask]
Celiant
Route 569 Carter Road PO Box 900
Hopewell, NJ 08525 Princeton, NJ 08542-0900
-----Original Message-----
From: Guy Ramsey [mailto:[log in to unmask]]
Sent: Monday, October 15, 2001 8:53 AM
To: [log in to unmask]
Subject: Re: [TN] Lead Free Surface finishes
Wild guess . . . Immersion Silver.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Graham Naisbitt
Sent: Monday, October 15, 2001 6:52 AM
To: [log in to unmask]
Subject: [TN] Lead Free Surface finishes
Techies and (I guess - Leadies?)
We are about to carry out some reliability test work, examining the
influences of electro-chemical reactions using SIR techniques.
The manufacturing process that will be employed involves lead-free soldering
materials, water based fluxes and water based conformal coatings. The
methodology we shall employ shall be as drafted in a new IEC draft spec
6-1189.
The coupon we will use is intended to model mixed technology as closely as
possible. We include through-hole connectors, J lead SOIC's, BGA 225, SMT
Capacitors and QFP 160.
We will use an LPIM resist and were going to examine 4 different surface
finishes:
NiAu (ENIG)
ImSn - Immersion Tin
ImAg - Immersion Silver
OSP
However, and to get to the question: We can't afford all these permutations
so, we shall select only one surface finish. Can you folks advise the most
popular surface finish that is likely to be used for lead-free processing?
Please, we would REALLY like a simple answer rather than to open a huge
dialogue - 'cos we have to get the testing done by Mid November and we have
yet to have the coupons made!!
Awaiting your replies with interest.
Regards, Graham Naisbitt
[log in to unmask]
<http://www.concoat.co.uk/> www.concoat.co.uk
For instant access to Product Data Sheets register on the Tech-Shot area of
http:// www.concoat.co.uk <http://www.concoat.co.uk/>
Concoat Limited
Alasan House, Albany Park
CAMBERLEY GU16 7PH UK
Phone: +44 (0)1276 691100
Fax: +44 (0)1276 691227
Mobile: +44 (0)79 6858 2121
Attention: This message is for the named person's use only. It may contain
confidential, proprietary or legally privileged information. No
confidentiality or privilege is waived or lost by any mistransmission. If
you receive this message in error, please immediately delete it and all
copies of it from your system, destroy any hard copies of it securely and
notify the sender. You must not, directly or indirectly, use, disclose,
distribute, print, or copy any part of this message if you are not the
intended recipient. Concoat Ltd and any of its subsidiaries each reserve the
right to monitor all e-mail communications through its networks.
Any views expressed in this message are those of the individual sender,
except where the message states otherwise and the sender is authorised to
state them to be the views of Concoat Ltd or one of its subsidiaries.
Although this message has been scanned for known viruses and inappropriate
content, we recommend that recipients employ appropriate measures on their
systems to intercept any such material.
Thank You - Concoat Ltd
---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
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 delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------
|
