[time-nuts] quartz / liquid nitrogen

jimlux jimlux at earthlink.net
Mon Apr 2 23:18:25 EDT 2018


On 4/2/18 1:39 PM, Hal Murray wrote:
>> If not Nitrogen, how about dry ice (-109F -78C)?
> 
> Dry ice is relatively easy to get.  It wouldn't be hard to try a quick
> experiment.
> 
> 


CTE mismatch in packages will be a significant problem - you might find 
that your ICs don't work because bond wires have been ripped off the 
die. Parts might have popped off the board too.

But if you have one, and it's sacrificable, give it a try - a cooler 
with some dry ice, and put the circuit above the dry ice, and it will 
cool slowly



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