I would not be so fast to through out the baby with the bath water. Yes there are other alternatives but a shop that controls their process, i.e. turn over's, chemistry concentrations, times, temperatures and such, should be able to provide a good surface finish. ENIG has been around a long time and yes there can be problems with soldering, peeling and solder mask lifting but 9 times of of 10 it is the fabricators lack of control.
Scott B. Westheimer
Account Manager, Rayben PCB
5709 Clarks Fork Drive
Raleigh, NC 27616
[log in to unmask]
Office: +1(919)278-7539
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Cell NC: +1 (919)800-1876
> Date: Wed, 3 Aug 2011 16:49:34 +0100
> From: [log in to unmask]
> Subject: Re: [TN] Steps to take to prevent ENIG issues
> To: [log in to unmask]
>
> Agree, don't use ENIG.
> I am in the middle of a protracted ENIG problem which according to the
> manufacturer is down to our processes and their tests of the board show
> them to be perfect.
> However in order to solder 4 power pad QFPs we are having to scrape off
> the gold to get the nickel to solder.
> Our production and a test at NPL shows the ENIG to be very poor.
> ENIG is the pits.
>
> Regards
> Rex
>
>
>
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Wenger, George M.
> Sent: 03 August 2011 16:43
> To: [log in to unmask]
> Subject: Re: [TN] Steps to take to prevent ENIG issues
>
> The only guarantee is not to use ENIG. To minimize ENIG issues select a
> good PCB fabricator and make sure they control their process.
>
> Regards,
> George
> George M. Wenger
> Senior Principal Reliability / FMA Engineer Andrew Corporation -
> Wireless Network Solutions 40 Technology Drive, Warren, NJ 07059
> (908) 546-4531 Office (732) 309-8964 Mobile
> E-mail: [log in to unmask]
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
> Sent: Wednesday, August 03, 2011 11:17 AM
> To: [log in to unmask]
> Subject: [TN] Steps to take to prevent ENIG issues
>
> I have a client who is switching PWB fabricators for ENIG finishes. They
> are fully aware of ENIG issues such as Black Pad, Brittle Nickel, etc.,
> and want to know whatever steps can be taken to prevent ENIG PWBs from
> reaching production with these issues.
> Does anyone have any suggestions?
>
>
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