Hi,

 

As I start looking at humidity measurement devices I started to wonder if
IPC humidity numbers are Relative or Absolute? Does anyone know off hand. I
need to go buy some specs.

 

I would have thought Absolute but the cardboard indicators are temperature
sensitive as are the desiccant drying systems in dry cabinets. 

 

If the temperature is high, say > 100C then a part will "Bake Out"
regardless of the absolut humidity, is that right?

 

Bob K.  



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