Minimal distance digital circuits next to AC power line

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8Volts
Posts: 113
Joined: Mon Nov 22, 2010 8:01 pm

Minimal distance digital circuits next to AC power line

Post by 8Volts » Tue Oct 24, 2017 2:57 pm

Hi,

I have many I/O lines coming from an MCU
which are laid out one next
to each other on a PC board. However I
Will require small metal pegs residing perpendicular
To the pc board. What should be the minimal
distance between the pegs to the digital traces
be?

Pc board with one peg below:


n1ist
Support Volunteer
Posts: 1009
Joined: Wed Mar 22, 2006 11:02 am

Re: Minimal distance digital circuits next to AC power line

Post by n1ist » Tue Oct 24, 2017 7:22 pm

It depends on the AC voltage. I usually use 3.5mm for 120V, 6.5 above that.
/mike

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