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Conformal coating is an insulating material applied to PCBs to protect against damage to the electronics. You can use this tag for questions about protecting PCBs with conformal coating and for issues with debugging/editing PCBs which have already been conformal coated.

5 votes
3 answers
1k views

Clean vs no-clean for high voltage circuit

I have a board that has fairly high working voltages up to 100V with small clearances down to 12 mil between the high voltage and ground or low voltage nets. This is unavoidable because the whole boa …