Fred,
The company which I work for is just started to changeover to no-clean.
From the trials which
we have carried out to date the best general all round flux has been Alpha
SLS 65. We have
been successful  in achieving reflow on 90 thou boards using an Econo-Pack
spray fluxer and
an air knife on an Electrovert UPK 600. However the PCB's which we are
building are not densely
populated with thru-hole components.

Martin Bourke.



----------
> From: [log in to unmask]
> To: [log in to unmask]
> Subject: [TN] Any No Clean Flux for Thick PCB's?
> Date: Monday, January 05, 1998 10:54 AM
>
> Has anyone had any success using a no-clean flux on thick (0.090")
multi-layered
> thru-hole PCB assemblies?
>
> We want to switch to a no-clean flux from our present aqueous system. Our
> Electovert currently has a foam fluxer but would get a jet-sprayer if the
flux
> was right. However, we tried a few demo no-clean fluxes and experienced
problems
> with our larger and thicker multilayer boards as far as solder wicking up
to the
> top-side on feed-thru's. We even added extra heated air-knives and to no
avail.
>
> If you have had success with any particular no-clean fluxes, please let
me know
> what they are.
>
> Thank you.
> Fred
>
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