Note, this is a large revision, the changes noted are the ones we feel relevant to us and our customers.

Changes to IEC 61000-4-2:2025, edition 3

Guidance for selecting test points is given, also troubleshooting techniques in the event of inconsistent EUT response during testing. Test setup remains the same except for wearable devices, wall mounted equipment and floor standing machinery (rather just clarifying the latter equipment).

For us, most importantly, current waveform requirements, so far, we have found only one model can no longer pass calibration but believe the manufacturer is offering a free modification to bring the waveform, specifically the second peak, into the time zone allotted.

Next, doing calibrations, the setup requires modifications at the least. A full new setup if you were cutting corners to begin with (Ex. we offer the PRP for a quick verification, comparison data coming soon). We will be offering a retrofit to the VGP, extending it to and fabricated for easy install on the RGP.

Last part on that, is the calibration sheet and measurement uncertainty, thank god I have Robert for that….

Air discharge requirement is pretty obscure, for very old and home brew ESD guns.

The best part of the standard I can’t share, because all our competitors will start ripping me off. They’ll have to take the time to read and figure it out themselves.

All in all this is a well done revision, there was a lot of thought put into amongst the technical committee. It is really dialing in the details, pushing manufacturers to build better quality ED guns as well as users to perform mindful, but efficient testing. It is moving us toward a much more consistent industry.If you have any specific questions please contact us directly for our two cents.

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changes edition 3 esd iec 61000-4-2 immunity standard update

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