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I am transferring 5V ext. through a robot which is a faraday cage of sorts. the line will be around 1.2 meters (4 feet). will the TVS be good for this application? or should I consider a different approach?

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  • \$\begingroup\$ What surge currents are you expecting? \$\endgroup\$ Commented Jul 31, 2023 at 10:28
  • \$\begingroup\$ Not really want any surges :D, but lets say 15kV ESD. \$\endgroup\$ Commented Jul 31, 2023 at 14:16
  • \$\begingroup\$ ESD generators have an output resistance defined in the spec you want to meet. The output resistance and the 15 kV imply a potential current peak that the TVS has to handle. That is why I asked for current and not voltage. \$\endgroup\$ Commented Jul 31, 2023 at 14:46
  • \$\begingroup\$ I honestly do not know how to address the answer to the question, I know that ESD voltage is easier to figure, the current will be determined by the resistance of the trace or line it impacts, there are so many variables to it as I see it. Unless I do not see it correctly, and will need your help to determine how to calculate it. \$\endgroup\$ Commented Aug 1, 2023 at 11:08
  • \$\begingroup\$ The resistance is dominated by the spark generator circuit output resistance in the ESD specification you are trying to meet. En61000 is a typical spec but there are a few number after the 61000 part that apply to the ESD part. Try finding it and searching for an image of the spark generator circuit. They are available. \$\endgroup\$ Commented Aug 1, 2023 at 12:18

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