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 Industrieel, 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

Olivier Smit

Oliver is een ervaren elektronica-ingenieur met kennis van PCB-ontwerp, analoge circuits, ingebedde systemen, en prototyping. Zijn diepgaande kennis omvat schematisch vastleggen, firmware-codering, simulatie, indeling, testen, en probleemoplossing. Oliver blinkt uit in het omzetten van projecten van concept naar massaproductie met behulp van zijn elektrische ontwerptalenten en mechanische vaardigheden.

Olivier Smit

Wat anderen vragen

What is the importance of a ground plane of a PCB?

I find that the all types of PCB samples from my suppliers have ground planes. It seems important and I want to know about its function.

Olivier Smit september 25, 2023

What are the possible reasons that a PCB doesn’t work?

I design a PCB file for samples and send it to manufacturer, but the samples can’t work now. We are trouble shooting the reason now. What are the common reasons you have met in a wrong PCB?

Olivier Smit oktober 8, 2023

How to handle feedline of bluetooth PCB connected to a 2.4GHz chip antenna?

I’m making a 4 layer PCB prototype that uses a bluetooth mcu connected to a 2.4GHz chip antenna. I’m thinking about what to do with the feedline, whether it should be buried on one of the middle layers, or left on the top layer. To get a 50 ohm line, should I choose top layer with 13-mil width or buried miccrostrip with 7-mild width?

Olivier Smit November 30, 2023

Is conformal coating necessary onto the PCB assembly?

Olivier Smit

Olivier Smit

Wat anderen vragen

What is the importance of a ground plane of a PCB?

What are the possible reasons that a PCB doesn’t work?

How to handle feedline of bluetooth PCB connected to a 2.4GHz chip antenna?

Lees gedetailleerd advies uit blogartikelen