Jean-Francois,
I think that this would usually be referred to
in the context of electrical control consols/cabinets/boxes etc.. In other words
the level of protection afforded viz: IP1 through 6. (There may have been more,
but time dims the memory... where was I? Oh yes...
Tropicalisation is the old electrical term to
ensure that the contents of said boxes can withstand tropical conditions. In
those times "Shellac" (I think I have the correct spelling?) would be "liberally
applied" to the entire electrical assembly including the
valves!
It is, if you like, the grandfather of true
Conformal Coatings. As Bill Brooks said, fungus, moisture and don't forget those
nasty little bug...... ants, termites and the like.
As to the continued use of the term in certain
European countries, it goes right along-side lacquers and varnishes. These are
terms that should no longer be used in the same context as Conformal
Coating.
Lacquer and Varnish are natural resins
dissolved into various solvents. Shellac is the same thing. Great for decoration
or indeed for making "lacquer-ware", but not as good as "modern" materials in
terms of performance and protection as given in
IPC-CC-830.
TTFN Y'all.
Regards, Graham
Naisbitt
[log in to unmask]
http://www.concoat.co.uk
In the beginning the Universe was created. This has made a lot of people
very angry and been widely regarded as a bad move. Douglas Adams
For instant access to Product Data Sheets register
on the Tech-Shot area of http://www.concoat.co.uk
Concoat
Limited
Alasan
House, Albany Park
CAMBERLEY GU16 7PH UK
Phone: +44 (0)1276 691100
Fax:
+44 (0)1276 691227
Mobile: +44 (0)79 6858 2121
Does anyone know
what tropicalisation means in relation with PCA???
Jean-François Bissonnette
Contrôle de la Qualité, Électronique
Quality Control, Electronics
Vapor Canada Inc.
10655 Henri-Bourassa O.
St-Laurent, Qc
H4S 1A1
(514) 335-4200 Ext: 2021
WABTEC CORPORATION CONFIDENTIALITY
NOTE
The content contained in this e-mail transmission is legally
privileged and confidential information intended only for the use of the
individual or entity named herein. If the reader of this transmission is not
the intended recipient, you are hereby notified that any dissemination,
distribution, or copying of this transmission is strictly
prohibited.