Article

Fields on the horizontal coupling plane excited by direct ESD and discharges to the vertical coupling plane

Hewlett-Packard, Palo Alto, California, United States
Journal of Electrostatics (Impact Factor: 0.86). 09/1998; 44(3-4):177-190. DOI: 10.1016/S0304-3886(98)00033-3

ABSTRACT

Field levels in indirect electrostatic discharge (ESD) test setups are hardly known yet. It has been proposed to ANSI and IEC to use a horizontal simulator position instead of a vertical position in indirect ESD testing. This paper shows the field values on the horizontal coupling plane for different excitations and grounding topologies and questions if the goal of the change – a reduction of the simulator influence – will be achieved. Also, investigations dealing with the sensitivity of digital devices to impulsive fields are presented.

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    • "The amplitude of the peak H-field decreases as the distance between the discharge point and the magnetic field sensor increases. This is in accordance to the remarks of [5], where comparisons of the magnetic field for the metal plane in horizontal position were made. It should be also underlined that the two ESD generators produce different magnetic fields due to differences in their construction and probably due to the different relay they are equipped with. "
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    • "A future work should examine measurements of the electric field in greater distances. In [16] the variations of the electric field have been explained and it has been analyzed that although there is an initial decrease of the electric field strength after a certain distance it increases again. Also, field measurements on metal plates with different dimensions should be carried out since the discharge current depends on where the target is mounted on. "
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