Bernhard

I would be very interested to understand EXACTLY how these tests were
performed. It would also be helpful for my work on the ISO and IPC
committee's investigating SIR measurements.

Regards

Graham Naisbitt
[log in to unmask]
www.concoat.co.uk
Concoat Ltd
Alasan House, Albany Park
CAMBERLEY GU15 2PL UK
Tel: +44(0)1276691100
Fax: +44(0)1276691227
----- Original Message -----
From: Bernhard Wanner <[log in to unmask]>
To: <[log in to unmask]>
Sent: 21 August 2000 13:26
Subject: [TN] AW: CONFORMAL COAT OVER NO CLEAN


> hi Mike
>
> some years ago (in the 93 to be precice) i've evaluated a no-clean fluxer
> (RF 32-DM, alphagrillo) with passable ionic contamination and resulting in
a
> excellent adhereance of the subsequent applied conformal coating (a PUR
> based Peters-type) over 4 different solder resist types.
>
> This result was found for no-cleaned as well as cleaned with 4 different
> solvents resp. saponifiers (at this evaluation we have compared 11
different
> fluxers)
>
> grüsse aus Zürich-Nord
>
> Bernhard
>
> > -----Ursprüngliche Nachricht-----
> > Von:  Mike Lang [SMTP:[log in to unmask]]
> > Gesendet am:  Donnerstag, 17. August 2000 21:40
> > Betreff:      CONFORMAL COAT OVER NO CLEAN
> >
> >
> > Gents,
> >
> > I have a product which I wave solder with no clean flux.  I have a
special
> > one time application where it is being suggested that we conformal coat
a
> > series of PCB's.  The PCB's will be in a mounted in a NEMA type 4X
> > enclosure which will be located outside.
> >
> > I have only known conformal coating to be applied to PCBs which were
> > cleaned, and which passed ionic contamination testing.
> >
> > We do not clean nor do we have the ability to clean.  We do pass the
> > standard litany of tests (known because we did extensive testing when
> > cutting over to no clean).
> >
> > What am I in for here?
> >
> >
> >
> >
>
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