Louis, 
By chance, did you ever publish such a study?  I am working on a section 
for the IPC Conformal Coating Handbook on thickness measurement and would 
like to be able to use such information.

Doug Pauls



Louis Hart <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
06/23/2010 11:35 AM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
Louis Hart <[log in to unmask]>


To
[log in to unmask]
cc

Subject
Re: [TN] Conformal Coating measurment






Jean-Francois, et al, several years ago, I did a repeatability and 
reproducibility study of a micrometer, for measurement of conformal 
coating thickness. I found it to be an acceptable method for determining 
conformance to IPC A-610. For process control, I did attempt to judge.

For anyone who is interested, IPC has a nice test method for measurement 
quality:

http://www.ipc.org/4.0_Knowledge/4.1_Standards/test/1-_1-9.pdf

Associated with it in the test methods page is a spreadsheet calculator 
and user guide.

Louis Hart
Compunetics



-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jean-François 
Bissonnette
Sent: Wednesday, June 23, 2010 11:52 AM
To: [log in to unmask]
Subject: [TN] Conformal Coating measurment

Hi Technetters,

 

What is the proper method for measuring conformal coating thickness? 
Were're using a micrometer but I doubt that the method is reliable.  A wet 
gauge is not out of the question but we would prefer to measure thickness 
once the coating is cured.

 

Thanks!

 

Jean-François Bissonnette

[log in to unmask]

 

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to 
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to 
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 
for additional information, or contact Keach Sasamori at [log in to unmask] or 
847-615-7100 ext.2815
-----------------------------------------------------


______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------