I'm sure DEC wouldn't have bothered with hard gold plating if their
connectors were metallurgically incompatible :P The few busted DEC
connectors I've replaced did indeed have selective gold plating on the
contact surfaces. Most quality edge connector slots are similarly
constructed.

Thanks,
Jonathan

On Fri, Aug 16, 2019 at 2:27 PM ben via cctalk <cctalk@classiccmp.org>
wrote:

> On 8/16/2019 12:13 PM, systems_glitch via cctalk wrote:
> > Dwight,
> >
> > I spot check boards. I lack sufficiently sensitive instruments to measure
> > actual thickness (even on a surface plate, it's the same for ENIG as hard
> > gold with an 0.0001" indicator) but ENIG won't stand up to a few swipes
> > with an ink eraser, whereas hard gold will stand up to it no problem. The
> > main issue I've seen, in buying other people's products and projects, is
> > board houses passing off ENIG as hard gold (and charging for it!) or
> > claiming they're using "extra heavy ENIG" -- which of course isn't a
> thing,
> > because ENIG is an ion swap!
> >
> > Thanks,
> > Jonathan
>
> Is gold plating the best thing? I thought that gold plating only works
> best when matching other gold connections.
> Ben.
>
>

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