[TowerTalk] Silver vs Aluminum vs Copper Re: OT: Inductor Calculator

[Jeff DePolo]

> > ##  44.9 microns  =  0.001767717  inches.   Im sure I can 
> pile on at least
> > .001  inch..or more of  silver plating..esp with multiple 
> applications.
> 
> The paper that was linked by another list member comments 
> that plating 
> conductivity is often (much) lower than the plain metal, because of 
> stuff added to make the plating actually work.
> 
> And you really need 5 skin depths - 1 skin depth only gets 
> the first 37% 
> of the current - 5 skin depths is >99%.
> There's a whole raft of icky things too about silver migration, weird 
> alloys, and so forth.

I recall looking into using Cool-Amp to silver-plate components for custom
filter products that we were designing and building in-house.  As I recall,
even as high as 100 MHz, the Cool-Amp plating thickness was insufficient,
and it couldn't be "built up" thicker without degrading conductivity which,
as I recall, was appreciably less than silver electroplating to start with.
Anyone have any measured data or links to research regarding silver plating
with Cool-Amp?

				--- Jeff WN3A


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