Hi Mike,

Did you use IPA to clean the no-clean paste?

Ted
--- "Barmuta, Mike" <[log in to unmask]> wrote:
> Bev: It depends. :>)
> If you are using water soluble paste you should
> remove it as soon as
> possible. The higher activity level of the flux
> starts to react with the OSP
> coating.
> If you are using no-clean it's not as critical.
> However we remove(wash)the
> no-clean paste as soon as practical.
> Also it's important that the boards are thoroughly
> dried after wash. You
> don't want wet/damp boards sitting around with an
> OSP coating.
>
> We've held boards for up to a month after washing
> paste and did not
> experience any solderabilty or activation issues
> using ENTEK 106A+
>
>
>    Regards
>
>            Michael
> Barmuta
>
>            Staff
> Engineer
>
>            Fluke Corp.
>
>            Everett WA
>
>            425-446-6076
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of
> Bev Christian
> Sent: Wednesday, May 11, 2005 9:51 AM
> To: [log in to unmask]
> Subject: [TN] Washing OSP boards
>
>
> TechNetters,
> If one were to wash misprinted OSP boards would it
> be worse to
> a)  leave the solder paste on 4 hours and then wash
> and use right away
> or
> b)  wash right away and then let sit four hours
> before reprinting and
> reflowing
>
> I looked in the archives, but didn't find anything
> that was particularly
> helpful.
>
> This is a general question so I can't give solvent,
> wash time (and thus
> amount of OSP left). So, Doug P., don't give me "it
> depends" as an
> answer!
>
> Bev
> RIM
>
>
>
>
>
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