Mine only has to work once, but there are some extreme conditions involved.
Sitting in a bath of liquid Nitrogen & subjected to a pulsed magnetic field
of 25 tesla. I'm not convinced they will work for me, but thought I'd cool
one down & see how it behaved. 

No point in trying this if I can't get a reliable supply though. That said,
I'll be working with this stuff next week so if I can find a sacrificial
calculator.....

Joe

> 
> I have had mixed results using these. I used to service a 
> mini computer system that had these to connect daughter PCBs 
> in a communications controller, and they were forever giving 
> us problems. Some would be alright, and others would fail on 
> a regular basis. I would go in and change the zebra strips on 
> the faulty ones, do them up to the required torque, and they 
> would still fail after a while. Eventually the manufacturer 
> changed the style of zebra strip to one that had a gold 
> plated foil around the outside instead of the conductive 
> black stuff through the middle, and all the problems went away.
> 
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