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| Date: | 26 SEP 96 15:23:18 EDT |
| Content-Type: | text/plain |
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general, boards are baked above the boiling point of water, 212 degree F
or 100 degree C and below the glass transformation temperature. Lower
baking conditions for longer times are also possible. For fast drying use
temperature 225 - 250 deg.F (105 - 120 deg C) for 2 hours. Only rarely is
this insufficient, and longer prebake times may have to be used. In our
cases 2 hours bake cured the volatile problem.
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Original Text
From: C=US/A=INTERNET/DDA=ID/TechNet-request(a)ipc.ipc.org, on 9/26/96
12:36 PM:
We are looking for reports or other references for moisture release rates
for different PWB substrate materials. Also recommended prebake parameters
for time and temperature in air and for other atmospheres. Any leads will
be
appreciated
Mel Parrish
We can be reached at: e-mail: [log in to unmask]
Manufacturing Technology Training Center (MTTC), Inc
543 Graaf Street Phone 619 446-5571
Ridgecrest CA 93555 Fax 619 446-4337
Home Page: http://www1.ridgecrest.ca.us/~mttc/mttc.htm
Bulletin Board: 619 446-4087
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