I have made a custom PCB that measures acceleration. The PCB contains components such as op-amps, SMD resistors, COG capacitors, and tantalum capacitors. The circuit is powered by a saft ls14500 AA battery. I wanted to if any of these components have a pressure rating including the battery. I was planning to use this circuit under a vacuum. Just wanted to know if the circuit would work in a vacuum.
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1\$\begingroup\$ A regular AA battery won't work in vacuum at the very least. \$\endgroup\$– Eugene Sh.Commented Feb 14, 2022 at 15:48
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3\$\begingroup\$ Only the Saft Tech Support can advise you on the perform for abnormal high stress environments even if Laser welded Lithium with a mechanical vent. It might only vent in one direction. farnell.com/datasheets/1781034.pdf \$\endgroup\$– Tony Stewart EE75Commented Feb 14, 2022 at 15:57
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1\$\begingroup\$ What about tantalum capacitors because they are a subtype of electrolytic capacitors. I am worried they might damage the board. \$\endgroup\$– NeilCommented Feb 14, 2022 at 15:59
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2\$\begingroup\$ All the parts need to be verified if Aerospace Qualified with supplier , datasheets and part numbers. along with system design thermal response in a vaccum \$\endgroup\$– Tony Stewart EE75Commented Feb 14, 2022 at 16:09
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2\$\begingroup\$ Under high power ripple stress the hard MnO2 had combustion issues with thermal expansion and shrinking dielectric gap, Yet reliable with lower stress factors. The polymer soft coated tantalum films (above link) don't have those thermal issues and have 20x lower ESR with a broader spectral range. Consult your FAE when in doubt. \$\endgroup\$– Tony Stewart EE75Commented Feb 14, 2022 at 17:17
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