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With out load i applied the High voltage(HV). but the HV point gave smoke after two d

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  • With out load i applied the High voltage(HV). but the HV point gave smoke after two d

    I design a PCB for photo multiplier tube breeder network for applying high voltage (-2000V DC, current in microamps only). The PCB was made up of FR4 material. With out load i applied the
    High voltage(HV). but the HV point gave smoke after two days. So for this type PCB which type material we have to use.
    Attached Files

  • #2
    What clearance/gaps/slots did you use between tracks and electrical objects?

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    • #3
      Sir here with I have attached the schmatic diagram and PCB design image. please give your suggestion.
      Attached Files

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      • #4
        This may help you:
        PCB Layout - Useful Calculations Which You Maybe Didn’t Know About (with Kenneth Wood) https://www.youtube.com/watch?v=fJCRrEf_IH8&t=3567s

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        • #5
          Already i downloaded this software. This gives the current carrying capacity of the tracks. in my PCB only the where i am applying HV, only that point only burned. Tracks doen't have any damage. So this is due to PCB material or current carrying capacity of the PTH is week. Please give you suggestion.

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          • #6
            that software will tell you what distance you need to have between the tracks

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            • #7
              2kV on an inner layer already requires 4mm spacing according to IPC 2221 (PCB toolkit).
              The outer layers is 5.375mm with solder mask and 10mm without solder mask.

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