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| From [log in to unmask] Mon Oct 28 12: |
45:40 1996 |
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Wednesday, October 23, 1996 7:12AM |
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We also use a UR conformal coating. In the "olden days" we did have an
occasional plastic components which the coating would not adhere to. At
that time we masked off those components and did not conformal coat them.
----------
From: CINDY KEMP ORLANDO ISC *8-306-6873
To: dabonz; jasatt; 'mail@ih <[log in to unmask]>'
Cc: 'mail@ih <[log in to unmask]>'
Subject: FWD: pwb-cca : conformal coating
Technet,
I'm forwarding this from a colleague.
Cindy Kemp
Lockheed Martin
Orlando, FL
****************************************************************************
***
*
From: [log in to unmask]
Date: Tue, 22 Oct 96 16:35:22 EDT
Message-Id: <[log in to unmask]>
To: [log in to unmask]
Subject: pwb-cca : conformal coating
Sender: [log in to unmask]
Precedence: bulk
hi group;
We are finding that in designs using conformal coating (UR) over plastic
parts
that the cc is dewetting on the parts.
Question - is this seen as a problem ?
I am proposing that a note should be added to our designs as follows:
CONFORMAL COAT DEWETTING ON PLASTIC ENCAPSULATED MICROCIRCUIT
COMPONENT BODY IS ACCEPTABLE.
If there is a better way please let me here from you.
What is the real would doing ?
thanx; Skip Greb
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