Hi!

We use silicon conformal coating on some boards and some of these
show a lack of adhesion of the coating.  It peels off very easily
with gently scratched.  I also heard of some peeling test that could
be done, can it be done with any kink of tape?  The same coating on
the other boards wont peel if I try to scratch it off.

Can anyone shed some light on this?  I tought that it would be a
cleaning problem but the supplier says that they do clean it.  Can
the board material be the source of that problem?

Thank You!

JF

##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe:   SUBSCRIBE TECHNET <your full name>
To unsubscribe:   SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################