[sdiy] RoHS/Pb wetting/wicking (Was: Re: Boycott Mouser and ROHS)

[Tom Arnold]

On Mon, Aug 14, 2006 at 07:32:53PM -0400, mcb, inc. wrote:
> Wanted to confirm an impression I'm getting.  I've done a few
> RoHS-compliant board/component sets with Pb solder now.  I build
> in an RF-style with flush or nearly flush solder-side leads,
> no filets, and thorough wetting and wicking of solder into the
> component lead holes.  It seems that the Pb/RoHS combination
> doesn't wet quite as well.  Increased heat on the Pb solder seems
> to improve things but it doesn't have quite the same wicking
> action as Pb/Pb.  Is this my jingoistic imagination or is this real?

I've had some wetting issues with ROHS parts like you describe.  Suitable
application of additional noclean flux with a flux pen solves the issue.

-- 
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