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| From [log in to unmask] Tue Aug 13 10: |
38:47 1996 |
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<"f9q1S3.0.UP6.ie74o"@ipc> |
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We are experiencing a problem with a soldermask on a a PCB during wave
soldering.
The mask tends to degrade during wave soldering and remove after
cleaning.
This defect is only seen over thin copper traces (especially around vias)
and not over
the bare PCB.
Can anyone tell me what is the typical temperatures a solder mask can
withstand
during the wave soldering process (e.g. preheats, max. temp and time
etc.)
Also is anyone else having this problem or can the flux or the cleaning
process be
causing this problem.
Thanks in advance
Martin Dooner
AMT Ireland
University of Limerick
Plassey
Limerick
[log in to unmask]
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