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How Voltage related to trace width ?

girish

 Hi,

Good day to all !

Is there any dependency of Voltage on the track thickness & width ?.

I want route power signal of 24V @2A for a distance of 2inch , planning  to use 40mil trace width(microstrip ,1OZ copper thickness, assuming temp 21C) as per the current calculation.For voltage rating is there any relation?

Regards,
Girish Kumar

  • tltoth

    The answer is NO. The tracks spacing depends on voltage differential between them.

    The track thickness and width depends on the current it has to withstand.

  • tltoth

     And also on which layer the track is located.

    details in IPC 2221  standard

     Seach for "PCB trace width calculator" in google

     

  • girish

    Thank u very much for the clarification ...!

    As I mentioned track located in the outer layer (microstrip) ,if I am routing in signal layer I will double the trace width .

    I have claculated the trace width for current capacity ,only worried whether I need to do any claculation for voltage also ?(since it is 24V).

     

    REgards,

    Girish Kumar

  • tltoth

    For 16-30Vpp voltage differential the clearance is approximately min 0.3mm

    But you know "More is Better"

  • purikku22
    in our case, 13-25V potential difference , we use 0.5mm clearance.

    tltoth wrote:
    > For 16-30Vpp voltage differential the clearance is approximately min 0.3mm
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