Is conformal coating necessary onto the PCB assembly?

I noticed that most PCB and components on it are conformal coating. Is that a necessary process for all the PCB in other field? What are they for?

September 19, 2023

Depends.

-Most commercial products do not have a conformal coating.

-PCBs of Industrial, especially military, may need additional protection from moisture and dust.

Manufacture of the PCBs may leave moisture in the fiberglass substrate. That would cause slippy operation towards units. The solution is to bake out the blank PCBs before soldering the parts on and spraying on a conformal coating to seal the analog electronics / PCB. Then calibrate the unit a few days later.

#PCB Assembly #Industrial

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

Oliver Smith

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