Effect of ESD generator ground strap configuration on ESD waveform

In this study, an analysis of the effect of the electrostatic discharge (ESD) gun grounding strap on the generated ESD stress waveform is presented. The reference ESD waveform is measured using the standard calibration setup of the IEC 61000-4-2 standard for the different (round, short and long) configurations of the grounding strap. The post processing analysis shows that increasing the length of the simulator ground strap to 3m reduces the variations in the ESD waveform, particularly ringing after the first peak, in comparison with standard reference waveform characteristics.