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???
11/26/12 09:45
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 		 #188900 - Low temp components
Responding to: ???'s previous message
-40C rated componnents are very widely available, so I see no reason why you shouldn't use them. Any ceramic with an X dielectric (i.e. X5R, X7R, X6S) should work at -40C and there are plenty of crystals and resonators that also work at -40C.

Potting wont help and may cause it's own problems. Potting compounds usually shrink as the temperature falls, and this may strain the components and rip them off the PCB.

List of 27 messages in thread
TopicAuthorDate
-40 degree Celsius operation            01/01/70 00:00      
   Heating pads            01/01/70 00:00      
   Undefined behaviour!            01/01/70 00:00      
      bending it in neon            01/01/70 00:00      
         That means that you're on your own ... no support             01/01/70 00:00      
   Why?            01/01/70 00:00      
      Not in Dubai            01/01/70 00:00      
         nobody has been that stupid            01/01/70 00:00      
         So many pitfalls...            01/01/70 00:00      
            testing            01/01/70 00:00      
               And what is the cost of testing?            01/01/70 00:00      
                  the cost of testing            01/01/70 00:00      
                     it's not just pass/fail ...             01/01/70 00:00      
                        Tell me about it!            01/01/70 00:00      
                        Why?            01/01/70 00:00      
                           Why??? It's to protect your own gluteus maximus            01/01/70 00:00      
         what would happen             01/01/70 00:00      
   Heaters/controllers            01/01/70 00:00      
   Low temp components            01/01/70 00:00      
      Potting wont help             01/01/70 00:00      
         it's probably less costly to heat a small enclosure            01/01/70 00:00      
            at very cold start...            01/01/70 00:00      
               Yes it can ...            01/01/70 00:00      
   it's not that simple ...             01/01/70 00:00      
      heater            01/01/70 00:00      
         With an NTC resistor driving the base?            01/01/70 00:00      
            It's very simple...            01/01/70 00:00      

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