Hi Ioan,
No there is not, and there really cannot be.
The temperatures used are in the range of 105 to 125—I tend towards 105 C, but the duration depends on a whole lot of factors. Among them: moisture content [bake time ranging from 0 to 24 hours plus], construction [thickness, P/G layer location, PCB resin, resin content, PTH/via pitch/diameter], reflow process/temperature, etc.
My recommendation is to determine it yourself on some coupons supplied with the PCBs.
Werner
-----Original Message-----
From: Ioan Tempea <[log in to unmask]>
To: [log in to unmask]
Sent: Mon, 4 May 2009 9:25 am
Subject: [TN] PCB baking
Dear Technos,
I know this has been oftenly discussed here, but I would like to lively up the
traffic a little bit...
Is there any IPC standard reglementing the bake out time for PCBs, in terms of
temperature/dwell time?
Thanks,
Ioan Tempea, ing.
Ingénieur Principal Fabrication / Sr. Manufacturing Engineer
30 ans déjà! - Already 30 years!
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