Open mmroden opened 3 years ago
More of a manufacturing decision than a design decision
Should test it (somehow? IP rating test?)
Acrylic is easiest to apply, least toxic and makes for easy rework. It has decent moisture protection. Silicone would be a good step up.
This acrylic looks like a good option: https://www.digikey.com/en/products/detail/acl-staticide-inc/8690/10270032
Conformal coatings will be easily removable with MG8310A coating stripper. https://www.mgchemicals.com/downloads/tds/tds-8310a-l.pdf
Background reading: https://www.techspray.com/the-essential-guide-to-conformal-coating
Could also fill the case with potting compound but this would make any maintenance down the line much more challenging as it is very difficult to remove.
mask up board after it's built, spray with some spray can conformal coating. Will require documentation, of course