Jack,
Maybe you should move to Phoenix, those boards wouldn't have to work at -40... Oh sure, they need to work at +120 or so, but those electrons will really move fast when the "ground" is so hot! :-) On the other side of this, will the boards be going through hot and cold transitions or just stay in the cold all the time? I'm thinking of solder joints and all that thermal up and down if that's the case...
Scott Decker – Senior Analyst, Drafting & Design Services CID+ – Electronic Systems Center
UTC AEROSPACE SYSTEMS
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-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D.
Sent: Wednesday, June 01, 2016 11:13 AM
To: [log in to unmask]
Subject: [External] Re: [TN] FR4 in COLD environments
LOL. Yep! I can relate to that.
For electronics reliability in cold weather, just ask the folks at Volvo and Saab.
Inge, if you are out there anywhere, now is your chance to contribute!
Odin
From: Douglas Pauls [mailto:[log in to unmask]]
Sent: Wednesday, June 01, 2016 1:10 PM
To: TechNet E-Mail Forum; Stadem, Richard D.
Subject: Re: [TN] FR4 in COLD environments
Cedar Rapids, where a day of -50 is consider balmy spring weather. You know it's spring when the Diet Dew starts to melt.
Doug Pauls
Principal Materials and Process Engineer Rockwell Collins
On Wed, Jun 1, 2016 at 1:06 PM, Stadem, Richard D. <[log in to unmask]<mailto:[log in to unmask]>> wrote:
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]<mailto:[log in to unmask]>] On Behalf Of Stadem, Richard D.
Sent: Wednesday, June 01, 2016 12:49 PM
To: [log in to unmask]<mailto:[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]<mailto:[log in to unmask]>] On Behalf Of Jack Olson
Sent: Wednesday, June 01, 2016 12:36 PM
To: [log in to unmask]<mailto:[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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