Hi Rick!

Absolutley!!! SMT Magazine just had an article talking about "Phased Reflow
Soldering". Basically, you have a longer plastic phase with a 2% silver
solder that allows the flux to work more, and allow the wetting to equalize
before becoming completely liquidous, which reduces tombstones...

The article talks about different mesh sizes of the solder powder too, but I
found here, with boards that have had tombstoning with 0402's in the past,
when I switched to a 2% silver paste, problem was solved...completely...I'm
serious.

You will be amazed...

-Steve Gregory-


> Steve,
>
> Any feedback is appreciated.  Are you saying that you've been able to
> document a reduction in tombstoning on 0402's using 2% silver solder paste?
> Hadn't heard of that one. Anybody else using it with these results?
>
> Rick Thompson
>


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