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August 1998

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Subject:
From:
Richard Haynes <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 19 Aug 1998 17:30:38 -0400
Content-Type:
text/plain
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text/plain (114 lines)
Greetings,
There is an interesting review in SMT, Feb, vol 12, number 2, p. 84,
entitled "A Conformal Coating Selection Guide which lists specs and
specifics coatings, such as Epoxy and Polyurethanes and more ...
Hope this article will be helpful.
Richard Haynes
-----Original Message-----
From: Jack Crawford <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Tuesday, August 18, 1998 1:17 PM
Subject: [TN] ASSY: Conformal Coating Performance


>The following message is posted at the request of the leaders of the IPC
Cleaning and
>Coating Committee:
>
>Recently there have been several questions on actual long term field
performance of
>conformal coatings based on several anecdotal observations.  There are
numerous
>specifications and standards that address conformal coating material
>performance/qualification, design and application requirements.  However,
very little
>documented correlation exists between design requirements and actual
>long term performance under field conditions.  In addition, standard
communication of
>design requirements related to conformal coating and what performance
should
>reasonably be expected from a conformal coating (i.e., the myth that
conformal
>coatings are impervious to water/water vapor, etc.) does not appear to be
clearly
>and/or readily recognize in the industry.
>
>IPC and the Cleaning and Coating Committee are considering holding a
forum/panel
>discussion on the above issues at the fall IPC committee meetings to be
held as part
>of IPC/SMTA Electronics Assembly Expo in Providence, RI October 24-29.
Several users
>and customers (FAA, etc.) have expressed interest in such a forum.  The
objective
>would be to have a short presentation from conformal coating users, FAA,
material
>suppliers, etc., addressing the above issues and any data supporting
recommendations
>whether or not further work should be pursed by IPC membership in this
area.
>
>Here's where we need your help!  We're trying to determine if there is a
significant
>interest from IPC members and other users to support holding such a
discussion in
>Providence.
>
>If your believe the subject is of sufficient interest and would consider
attending an
>open panel discussion, audience question and answer session on this
subject, please
>contact Jack Crawford a the IPC ([log in to unmask]) by 28 August to
indicate your
>level of interest.  We will use the results of this poll to determine if
such a
>session should be organized.
>
>--------------------------------------------------------------------------
>
>Thanks,
>
>Joe Felty
>Raytheon Systems Company
>Sensors & Electronics Systems
>972-952-5318
>[log in to unmask] or [log in to unmask]
>
>
>IPC/SMTA Electronics Assembly Expo
>Technical Committee Meetings, Conference, Exhibits
>Providence RI   October 24-29
>More info at http://www.ipc.org
>
>Jack Crawford, IPC Project Manager - Assembly
>2215 Sanders Road, Northbrook IL  60062-6135
>[log in to unmask]      847-509-9700 x 393     fax 847-509-9798
>
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