Hi There,

Pd was first proposed as an alternative to acid hard gold. The argument was
that at the time it was approx 1/2 the gold price and coincidentally about
30% less in density (ie more micron per unit mass).
The origional claims about equivalent electrical contact resistance proved
unfounded and the compromise of high Pd plus flash gold came up.

I imagain you are looking for bonding properties wherein I would argue
electroless, pure gold would be much better than Pd. Incidentally Pd is now
2.5 X the price of PD!!!

Best Regards,

Ken Mc Gowan
----- Original Message -----
From: "Jean-Luc Lehmann" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, May 15, 2001 1:28 PM
Subject: [TN] PCB paladium plating


> A PCB supplier propose paladium plating. The statement is that the
> surfacing is as good, if not better, than gold plating (for SMD) without
> the need for Nickel plating.
> Also manual soldering needs some extra flux because the tip does not get
> enough heat contact (surface too flat and hard).
>
> What are the pros and cons of paladium finish on PCB ?
>
> Jean-Luc Lehmann
> Project Manager
> DPS S.A., CH-1217 Meyrin
>
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