Hello Jim,

In my own experince, in not necesary to wash the PCB before apply a
conformal coating (otherwise you're using a washable flux), only be careful
if you are using a flux with visible flux residues or if you don't
activated enough your flux.

If you are applying a conformal coating UV curable, heat produced by UV
oven could actived your flux residues and have delaminations of your
conformal.

I hope this advice could be useful for you,

Regards,

Mario.



                    "West, Jim"
                    <jwest@NEXERG        Para:   [log in to unmask]
                    Y.COM>               cc:
                    Enviado por:         Asunto:      [TN] Conformal
                    TechNet              coating
                    <[log in to unmask]
                    ORG>


                    27/06/01
                    11:00 a.m.
                    Por favor,
                    responda a
                    "TechNet
                    E-Mail
                    Forum."; Por
                    favor,
                    responda a
                    "West, Jim"





Hi,

Do boards have to be cleaned before you apply conformal coating?  Does it
depend on what type of flux is used?  Example would be no-clean flux, you
can apply conformal coating over it right?

Thanks,
Jim

---------------------------------------------------------------------------------

Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
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 delivery of Technet send the following message: SET
Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases >
E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
ext.5315
---------------------------------------------------------------------------------

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
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 delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------