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?

PCB Assembly
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

What Others Are Asking

What are possible solutions to PCB warpage problems?

My PCB manufacturer just informed me that he is facing PCB warpage issue in my simple, single sided, copper poured PCB. He says to avoid this issue he suggests to add a dummy copper patch by keeping 3mm copper clearance from all sides. Can somebody tell me what leads to this issue and what are possible solutions to this problem ?

Oliver Smith November 10, 2023

Is it better to have round corners on a PCB?

When I visit the PCB showroom in factory, I find that there are some pcs with round corners. Is it better to have round corners on a PCB?

Oliver Smith October 8, 2023

What makes RF/microwave PCB special than other conventional ones?

We are a home appliances company and now we plan to develop a microwave oven. PCB is the key part of the device and we know it is not a duck soup. What is the differences between microwave PCB and common PCB?

Oliver Smith September 19, 2023