I "suspect" that you "might" have a problem with solderability.  How soon
after manufacture of the switch do you assemble and solder into the PCB?
You have a problem with brass pins that have no barrier plating.  The zinc
from the brass will cause soldering problems.  The silver may slso cause a
problem but I have had no experience with that type of silver.  Maybe
someone else on the net has soldered to that plating.

      Al Cash.

> ----------
> From:         Neil Atkinson[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;Neil Atkinson
> Sent:         Friday, July 17, 1998 9:03 AM
> To:   [log in to unmask]
> Subject:      Soldering microswitch legs
>
> Technetters,
>
> I am currently having problems soldering a switch to A PCB.  I have asked
> the manufacturer what the switch terminals are made of and he has come
> back with the following:
>
> One lead is CuZn37 (Brass) plated with 12 microns of electrolytic gold.
>
> Whilst the other lead is the same base with 2 microns of hard bright
> silver argilion passivation and 2 microns gold.
>
> Can anyone tell me the implications of wave soldering this to a PCB?
>
> Neil Atkinson
>

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