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September 2007

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Subject:
From:
Rob Scrivens <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Rob Scrivens <[log in to unmask]>
Date:
Wed, 12 Sep 2007 23:08:21 +0100
Content-Type:
text/plain
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text/plain (97 lines)
Hi Joe,

What is the environment that the conformal coating needs to protect the
assembly from and is this an exercise to eliminate solvents altogether?

Regards,
Rob Scrivens
Area Technical Manager

[log in to unmask]

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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Joe Macko
Sent: 12 September 2007 23:00
To: [log in to unmask]
Subject: [TN] Conformal coating properties question

Fellow Techs,

 

I have been asked to help select an alternate material that cures by
moisture / cross-linking (and not by solvent evaporation such as
HumiSeal type AR 1B31). There are a range of mainly type UR materials to
select that offer moisture cure and have differing Tg, CTE and Young's
Modulus properties.  

 

I am very interested in any information that relates a conformal coating
materials Tg, CTE and Young's Modulus to a coating's capability, board
reliability etc..

 

Thanks again

-Joe

 


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