I have to come clean on this, this was the specification I inherited.
The company was told by the factory that this would be better.

Scott
IDS

Joy, Stephen C wrote:
>
> How does a supplier supply 6 microinches of immersion gold? I am not sure
> this is possible.
> We have asked for 3-6 in the past and measured an average of 2.5. When we
> asked for more we got a bunch of late deliveries.
> Steve
>
> -----Original Message-----
> From: Scott D. Shepard [mailto:[log in to unmask]]
> Sent: Wednesday, April 21, 1999 1:52 PM
> To: [log in to unmask]
> Subject: Re: [DC] Plating thicknesses
>
> This sounds right to me also, however, if your doing COB, I've found
> that 6-10 micro inches works better, especially if in mass qtys such as
> 10k a month.
>
> Scott
> IDS
>
> Meehan, Alexis wrote:
> >
> > We will be gold-plating some of our PCB's, and our manufacturing
> department
> > has requested that
> > we put this note on the fab drawings:
> >
> > Plating: Land will be 3 to 8 microinches gold immersion over 100-150
> > microinches of electroless
> > nickel over base metal.
> >
> > Do these thicknesses look right? Some folks in the company are questioning
> > whether this is
> > standard for most fab houses. Thanks in advance for any insight.
> >
> > *******************************************************
> > Alexis Meehan             Wavespan Corporation
> > Mgr Engineering Srvs  500 N. Bernardo Avenue
> > Tel: 650-237-8365            Mountain View, CA 94043
> > Fax: 650-919-0191            http://www.wavespan.com
> > ********************************************************
> >
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