Dean,

        Look into 'Conformal Coating' of the finished board assembly BEFORE
shipping product.  There are several types of conformal coating materials
out there to choose from.  Check out Humiseal (www.humiseal.com), a part of
Chase Corporation.

Ed

-----Original Message-----
From: Dean Hunt [mailto:[log in to unmask]]
Sent: Monday, November 20, 2000 3:16 PM
To: [log in to unmask]
Subject: [TN] PCB Corrosion


Is anyone having problems with PCB corrosion. We have a number of products
which are showing signs of corrosion on the copper tracks and planes. The
products concerned are in non-air conditioned  environment and varying
humidity situations. Does anyone know of a suitable method to protect PCBs
from external elements. I am keen to hear of any known solutions to this
problem.

Thanks


                                 Dean Hunt
                           CAD Solutions Manager
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    Invensys Energy Systems (NZ) Limited, 39 Princess St, PO Box 11-188
                      Christchurch 8030, New Zealand
             Phone: (++64) 3 343-3314, Fax: (++64) 3 348-5100
                       Phone: (++64) 3 343-7471,DDI
                   Email: [log in to unmask]
                 Website: http://www.invensys-energy.co.nz
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