Does conformal coating prevent outgassing from plastic parts in space?

[buenos]

Does conformal coating prevent outgassing from plastic parts in space?
It was common to use ceramic packaged chips instead of regular plastic ones.
Since the ceramic chips can be 10000x more expensive and the selection of available parts is also 10000x narrower, there is a motivation for using regular plastic parts, even for space designs (like satellites). So is this a thing? How is the plastic part outgassing prevented or handled? By using conformal coating? Would the coating bubble up from the gasses emitted from the component packages?

 

[dick_freebird]

IC plastic part outgassing is not a concern else packages would degrade in terrestrial higher temp applications. Anything automotive grade seems to be fine. A part with a lousy MSL, maybe skip that one as it might freeze or boil in-taken moisture and maybe destructively at mil/space application temp range endpoints.

Other components you'd want to check of course, you only need one goat to wreck a garden.

Believe con-coat is more about keeping stuff out, than in

 

[loose-electron]

conformal coating will not help with outgassing. Your parts need to all be vacuum compliant functional. Typically satellites are not pressurized.

Add to that, you will need rad-hard devices, and thermal extremes compliance.

Your PCB will also have to use materials that are space compliant and will not outgass. Seek out a PCB fabrication shop that deals with aerospace products and ask about their

Add to that, thermal extremes will be specified for the internal temp specs of the satellite, and all thermal cooling/distribution needs to be by thermal conduction methods.

Here, give this a read as a start:

https://www.analog.com/en/signals/thought-leadership/challenges-for-electronic-circuits-in-space-applications.html

Also, NASA has a lot on their web sites about space compliant parts and materials and maintains approved parts listings.