Fred, et al Vic's original question asked about test conditions; and that is what the responses dealt with. As a matter of fact, the responses were very focused on the question that was asked.
In the original question, I saw no discussion of the desired compliance level. For all I know, Vic could be testing a bare chip or integrated circuit for which a compliance level of 1000V could be sufficient. The come-back which I received, below, assumes that Vic needs the 4KV, 8KV or higher compliance levels typical of most complete products. That may be true; and I think that you bring up an important point that engineers need to focus on proper ESD design as well as ESD testing. So, I consider your message to be worthwhile; even while I consider the criticism in its first sentence to be off target. Chris Maxwell | Design Engineer - Optical Division email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 797 8024 NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA web www.nettest.com | tel +1 315 797 4449 | > -----Original Message----- > From: Fred Townsend [SMTP:f...@poasana.com] > Sent: Wednesday, June 12, 2002 12:27 PM > To: Chris Maxwell > Cc: Gibling, Vic; emc-p...@majordomo.ieee.org > Subject: Re: An ESD question > > > It is interesting to see how easy it is to lose focus. The problem is not > the humidity, approach speed, etc. as Richard has suggested. Yes, they are > factors but not the problem. The problem is a massive design flaw. 800 volts > is way too low. The fact there are multiple failure modes supports the > conclusion something major is wrong. The designers needs to review their ESD > suppression and grounding of this product. You may need to call in an ESD or > SI expert. This product is not ready for prime time. > > This discussion would be relevant if we were trying to sneak through a > product that passed at 4 KV but failed at 5 KV but not at 0.8KV. > > Fred Townsend > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
