Jean-Francois
I echo St Doug's NO for all the reasons stated. I can quote another
case: a fairly large European company in the telecomms industry made
5,000 street-box demultiplexers. The bare, large, 8-layer board alone
plus the cost price of the components came to $8,000 each. Now, by my
maths, that is a total cost price of $40 M. Add to that their mark-up.
Now, they took a short-cut because their flux supplier made an
ionics-rich "no-clean", easy to solder with, and these stupid buggers
believed their supplier who told them that they could coat over, without
conducting the slightest qualification test. Would you believe it?
Natch, in the harsh conditions of street furniture, they didn't last 4
or 5 months. They hardly believed it when their customer -- a large
State-owned telephone company, at that time -- returned 5,000 units with
a penalty demand for compensation for interrupting a public service of
nearly $4 M (5% of the selling price). Real nasty: is your company
prepared to take a similar risk?
Best regards
Brian
"Bissonnette, Jean-Francois" wrote:
>
> Is conformal coating a good protection against dendrites? I read that
> ionic contamination can cause dendrites, if a board has ionic contamination,
> will conformal coating prevent dendrites?
>
> Jean-François Bissonnette
> Vérificateur, Contrôle de la Qualité
> Électronique
> Produits et Procédés
> Vapor Rail Inc.
> 10655 Henri-Bourassa O.
> St-Laurent, Qc
> H4S 1A1
>
> (514) 335-4200 x2021
> (514) 335-4231 fax
>
> <<Bissonnette, Jean-Francois.vcf>>
>
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