Edwin,
It is my assumption that there are lots of companies who are using ENIG and haven't experienced any problems. i also know that there are many companies who have stopped using ENIG because they did as werner points out had problems with ENIG. we our one of those other companies that Werner referred to that has never had an issue with immersion silver. Although immersion silver is our surface finish of choice, I should also add that we still have one old legacy product that uses ENIG that we haen't had problems with and see no reason to have to switch it to immersion silver because it is a real simple product (3" x 1.5" with 18 surface mount chip components [12 caps and 6 resistors] and one power transistor).
I hope you continue to have good results with ENIG.
Regards,
George
George M. Wenger
Reliability / FMA Engineer
Base Station and Subsystems Group
Andrew Corporation, 40 Technology Drive, Warren, NJ 07059 (908) 546-4531 [log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Edwin Louis
Sent: Thursday, August 11, 2005 7:48 AM
To: [log in to unmask]
Subject: Re: [TN] RoHs board surface recommendations.
We have been using ENIG now for about three years and have had no bad
experiences with it. NASA for one does not allow the use of silver .
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Werner Engelmaier
Sent: Wednesday, August 10, 2005 4:57 PM
To: [log in to unmask]
Subject: Re: [TN] RoHs board surface recommendations.
Hi Steve,
I do not know about "bad-mouth ENIG"--I am a reliability consultant, and
have
had plenty of calls because of ENIG related failures, but not a one about
iAg. On the other hand, I do not know about their respective environmental
implications.
Regards,
Werner Engelmaier
Engelmaier Associates, L.C.
Electronic Packaging, Interconnection and Reliability Consulting
7 Jasmine Run
Ormond Beach, FL 32174 USA
Phone: 386-437-8747, Fax: 386-437-8737, Cell: 386-316-5904
E-mail: [log in to unmask], Website: www.engelmaier.com
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