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November 2005

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Subject:
From:
"Tempea, Ioan" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Tempea, Ioan
Date:
Tue, 29 Nov 2005 11:43:56 -0500
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Hi Technos,

application: one RF board and one antenna, no conformal coating, both sealed inside of a casing; outdoor unit, will see temp and humidity variations.

question: assuming that the boards are well insulated from the exterior, should I worry about long term rel of the boards? Otherwise said, due to temp variations, can the residual humidity inside the casing condensate on the boards and cause damage? Or can it make grow dendrites?

And a general question:  For dendrites we need a potential difference, humidity and dirt; is there any threshold for the humidity level, below which dendrites will not grow?

Thank you,
Ioan

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