Yes Mike.  I have done several with an Air-Vac.  The best way is to make
sure you have solder above liquidus(use t-couple).   I would target a
temp > 200 C for at least 30 seconds.  Since the Parylene will still
have a good hold on the solder joints, you must shear through the joints
using a spatula.  Once you get the hang of it, it is fairly simple and
straight forward. Like I said, I have taken off quite a few with no
problem on the pad side.  Some clean up of course is required prior to
replacing a new part.

                        Tom Long
                        ITT Avionics
                        Clifton, NJ

-----Original Message-----
From: WEEKES, MICHAEL HS-SNS [mailto:[log in to unmask]]
Sent: Thursday, December 05, 2002 10:58 AM
To: [log in to unmask]
Subject: [TN] reworking paralyne (paraxylene) coated BGAs and uBGAs

Hello fellow Technetters:

Anyone have any experience removing  paralyne (paraxylene) coated BGAs
and
uBGAs with conventional air vac DRS 24 type hot air equipment - I tried
conventional reflow profiles and it was very unsuccessful.

[log in to unmask]

---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
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/html/forum.htm for
additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700
ext.5315
-----------------------------------------------------

************************************
If this email is not intended for you, or you are not responsible for the
delivery of this message to the addressee, please note that this message may
contain ITT Privileged/Proprietary Information.  In such a case, you may not
copy or deliver this message to anyone.  You should destroy this message and
kindly notify the sender by reply email.  Information contained in this
message that does not relate to the business of ITT is neither endorsed by
nor attributable to ITT.
************************************

---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
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/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------