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Reply To: | TechNet E-Mail Forum. |
Date: | Mon, 8 Apr 2002 12:12:51 -0400 |
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Good day, Technet
After reviewing past threads regarding baking boards before conformal coating I come up with quite a varied selection of ideas.
I found 1 hour @100°C, 4 hours at 150°C, and 4-5 hours at 125°C.
My design engineer is concerned about the boards being exposed to this temperature for an extended time. Yes, in the wave solder it sees much higher temperatures... for a short period of time. Our aqueous wash system dries at about 65°C for 20 minutes.
Our product normally is tested to 40 - 50°C depending on the customer needs.
The past threads suggested raising the temperature above 100°C to "boil off" any remaining water.
Can this time/temperature be narrowed down any?
And if we use a lower temperature are we possibly trapping moisture?
How will the reliability be affected by these elevated temperatures.
Thanks in advance,
Phil Nutting
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