Mechanisms of charged-device electrostatic discharges

摘要: Abstract As they increasingly rely on automatic handling equipment, manufacturers of electronic components and equipment need to be more alert the problem charged-device model (CDM) electrostatic discharges. The growing concern about this threat, coupled with proliferation CDM simulators, should remind us that we do not yet fully understand basic physical mechanisms event. This paper examines some unanswered questions. First, why is waveform so highly damped? How much energy from event dissipated in electromagnetic radiation? From theory I derive an equivalent circuit for radiation loss CDM, conclude mechanism alone cannot explain observed damping. Next, study physics arc discharges find out if impulse shape linked dissipation spark channel. Despite complexity such processes, there are simplified models acceptable accuracy. apply three dynamics compare their predictions experiments. Finally, based characteristics formation, develop a predicts effect approach speed grounding electrode.