Re: Circuit pack ESD drain

2002-11-01 Thread Cortland Richmond
I believe you would not be far off to take the IEC waveform as the worst case. The amount of charge is pretty well approximated by the IEC ESD simulator. The discharge waveform shape depends on the impedance of the source - the person holding it, and the ESD trace on the circuit pack (and its

RE: Circuit pack ESD drain

2002-11-01 Thread Pommerenke, David
pack ESD drain All, Does anyone know of a sample waveform or general characteristics for worst case VI on an ESD drain pin when a circuit pack is inserted into an equipment shelf? This is an odd question I know, but my management asked for the info and I really have no idea (and it shouldn't

RE: Circuit pack ESD drain

2002-11-01 Thread JP Hare
: Thursday, October 31, 2002 5:58 PM To: 'emc-p...@majordomo.ieee.org' Subject: Circuit pack ESD drain All, Does anyone know of a sample waveform or general characteristics for worst case VI on an ESD drain pin when a circuit pack is inserted into an equipment shelf? This is an odd question I

Re: Circuit pack ESD drain

2002-11-01 Thread Doug Smith
Hi David, In general, I would have to know the geometry of the equipment to answer the question. In general, voltage is not so important as current and it can be in the several tens of amperes. And...current is not so important as di/dt for upset effects on equipment. The result is that low

Circuit pack ESD drain

2002-10-31 Thread David Heald
All, Does anyone know of a sample waveform or general characteristics for worst case VI on an ESD drain pin when a circuit pack is inserted into an equipment shelf? This is an odd question I know, but my management asked for the info and I really have no idea (and it shouldn't happen anyway