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August 1998

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Subject:
From:
Jack Crawford <[log in to unmask]>
Reply To:
"TechNet E-Mail Forum." <[log in to unmask]>, Jack Crawford" <[log in to unmask]>
Date:
Tue, 18 Aug 1998 12:16:11 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (75 lines)
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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