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August 2007

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Subject:
From:
"Hogg, Blair K." <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Hogg, Blair K.
Date:
Fri, 17 Aug 2007 16:00:48 -0400
Content-Type:
text/plain
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text/plain (59 lines)
Conformal coating with proper cleaning helps. Moisture will migrate
through the coating, so it is important to get any ionic contamination
off the board before coating.

Good design practices including maintaining enough spacing between
conductors of different voltage potential.

Potting might be something you find in under hood automotive
applications, or more sever environments.

Outdoor locations will typically give condensation due to the diurnal
temperature cycling. Hopefully any outdoor electronics will not be
directly exposed to the weather. 

Blair Hogg
GAI-Tronics Corporation

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Reyes, Angel LAM2
4429
Sent: Friday, August 17, 2007 2:32 PM
To: [log in to unmask]
Subject: [TN] PCB assembly protection for outdoor working under harsh
environmental conditions

Could I have examples of what PCB assembly protection (perhaps conformal
coating) is used for products to be used in outdoor (Stop lights,
Automobile, etc) under harsh environmental conditions

Angel Reyes
Principal Engineer
Rain Bird Corp./controls Mfg. Div
9491 Ridgehaven Ct
San Diego Ca. 92123
Ph:(619) 661 4429



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