Grant,

we found that putting our no-clean assemblies through a saponified water
wash/DI rinse (inline cleaner) was good for cleanliness (ROSE) and adhesion
of acrylic conformal coating.  The coating did not adhere when tested with
no cleaning step.

Ralph Vaughan


> ----------
> From:         Grant Emandien[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;Grant Emandien
> Sent:         Monday, February 28, 2000 3:11 AM
> To:   [log in to unmask]
> Subject:      [TN] Cleaning of 'No clean' fluxes
>
> hi all,
>
> Has anyone had any sort of success in the cleaning of 'no clean' fluxes on
> assemblies which are then to be conformally coated. I ask this as our
> processes (or at least their output) is at variance with new customer
> requirements, and hence may need to adjust or possibly introduce new ones.
> No Clean fluxes are used on the bulk of our products and now venturing in
> contract manufacturing, new requirements of coming more and more to the
> fore.
>
> Thanks
> Grant
>
> ##############################################################
> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
> ##############################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with
> following text in
> the body:
> To subscribe:   SUBSCRIBE TECHNET <your full name>
> To unsubscribe:   SIGNOFF TECHNET
> ##############################################################
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
> additional
> information.
> If you need assistance - contact Keach Sasamori at [log in to unmask] or
> 847-509-9700 ext.5315
> ##############################################################
>

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
##############################################################