Hi All, I have a few thoughts I would like to share with you on ESD that have comes out of my private research into the field in recent years.
1. A 2kV air discharge can be much more likely to cause equipment malfunction than any other discharge of any voltage. 2. There is no natural ESD event comparable to a 15-20+ kV contact discharge so why test for it? That is designing for something that is extremely unlikely at best. 3. The IEC61000-4-2 does not very well model real ESD events at all. One example, my hand metal discharge at 4 kV results a current spike at the start of the discharge that is more than twice as high as the standard specifies! This is very repeatable. The above is just a sample of the research I have generated over the years. Seems like IEC 61000-4-2 needs an urgent overhaul as I believe engineers get a false sense of security that passing the test means reliable field performance, not even close! Doug Smith Sent from my iPhone IPhone: 408-858-4528 Office: 702-570-6108 Email: [email protected] Website: http://dsmith.org - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
