On Jan 28, 2014, at 12:46 AM, Mouse <mouse at rodents-montreal.org> wrote:
I expect that
the electronics aren't particularly troubled by the
cold,
Well, they can be. There's a reason most ICs have operating
temperature limits (and storage temperature limits, though the latter
are generally significantly wider).
I once saw it explained as differential thermal expansion rates
between, say, silicon, metal layers, packaging plastic, and the like,
leading to thermal stresses and, in extreme cases, failure.
That's a concern, certainly. From the system standpoint, as the
temperature gets colder and the parts get faster, you can also
start to run into hold time violations (though not terribly often,
as the hold time requirement also tends to have a positive temp
coefficient).
- Dave