Although they might not work very well in Cedar Rapids, Iowa in the wintertime, but that is usually due to the Dew spilled on them the rest of the year freezing over.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
Sent: Wednesday, June 01, 2016 12:49 PM
To: [log in to unmask]
Subject: Re: [TN] FR4 in COLD environments

Other than tin pest and batteries used in backup systems, I know of no issues with electronics operating at -40. Automobile electronics operate at temperatures well below -40 on a regular basis right here in beautiful Minnesota.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jack Olson
Sent: Wednesday, June 01, 2016 12:36 PM
To: [log in to unmask]
Subject: [TN] FR4 in COLD environments

Has anyone ever heard anything about the reliability of circuit boards in cold environments?
(continuous -40C)
I couldn't find anything on TechNet or in the Printed Circuits Handbook...

thanks,
Jack


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