Subject: | |
From: | |
Date: | Thu, 31 Oct 96 18:39:35 JST |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
Dear Mr. Tom Tillander,
I would be glad if my experience will be helpful for the second half
of your question dated October 31 with your subject "UL CONFORMAL
COATING".
>How do you measure the thickness of the coating to ensure UL
>compliance?
The comment I received from UL engineer last month was as follows-
"The minimum and maximum thicknesses indicated would be based on the
average thickness of the base film and solder resist(coverlay) minus
the average thickness of the base film by itself"
It was very simple one.
Where my question was-
"Although we understand that you(UL) regard ink resists as one of
Coverlay materials, we would like to comment the measurement results
of ink resist thickness varies. The measurement method you are using
or recommend will be appreciated."
In addition, as our products are Flexible Printed Circuits only, our
UL applications are for our FPCs.
Best regards,
Toru Koizumi(Mr.)
Fujikura Ltd.
Japan
[log in to unmask]
***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To unsubscribe from this list at any time, send a message to: *
* [log in to unmask] with <subject: unsubscribe> and no text. *
***************************************************************************
|
|
|