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numbers of layers for emi
elektroboard , 11-16-2023, 06:55 PM
Does the number of layers have an effect on successful passing of EMI tests?
QDrives , 11-16-2023, 07:58 PM
Simple answer - yes it does, if you do not have enough.
What is enough? Does every signal have at least one good, uninterrupted return plane?
Robert Feranec , 11-19-2023, 02:03 PM
What it has an effect on is how difficult it can be to design your PCB to pass EMC/EMI. For example it may be much easier to pass with 4 layer PCB, that with 1 or 2 layer PCB. However, once you have solid planes close to signal layers, the effect of additional layers may not be as visible as if you compare 1 vs 2 vs 4 layer PCB. Also, I am not sure if it is only about EMC/EMI (many 1 or two layer PCBs will pass EMC/EMI), but also reliability and stability of the circuit may improve a lot between 1 vs 2 vs 4 layers.
elektroboard , 11-19-2023, 04:06 PM
Thanks Robert and qdrives
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