Ron,

Thanks for sharing that link.

The points of most interest to me in that white paper is that our methods of
adding components to a board (especially where we cannot place the component
onto a properly plated pad - i.e, a trace scraped cleared of solder masking)
are at greater risk for vibration and aging failure when bonded with
lead-free solder.

73,
Don W3FPR

> -----Original Message-----
>
> Mike S brought up an interesting issue about the strength of lead-free
> solder joints referencing a paper by Borgesen of Universal Instruments
> Corporation and Henderson of IBM Corporation:
>
> http://www.pcbrc.com/dev/PDFs/WhitePaper-SACfragility1.pdf
>
> I'm as 'green' as the next guy but I'll stick with my leaded solder. After
> all, I'm not planning to dump any of my Elecraft rigs in the land fill
> anytime soon...
>
> Ron AC7AC
>
>
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