Study on ESD characteristics and its effect mechanism

Based on experimental study on microcircuit and electric explosive device (EED) applied by electrostatic discharge (ESD), the characteristics and its electric conduction law of ESD are introduced. And it is shown that the generally accepted Ohm´s law is not followed at times under very high electrostatic field. In another words, ESD discharge curve is not an exponential decay one. ESD may form a hazard to microcircuit and EED. And its effect mechanism includes thermal effect of adiabatic process, electromagnetic interference from broadband electromagnetic radiation, overstress in high potential electrostatic field and field-caused breakdown effect etc. The failure rate may reach about 50% for unprotected MOS circuits and 10% for bipolar circuits due to general ESD hazards. The electrostatic ignition energy of EED is smaller with 2-3th power than that of the EED which is ignited through electrifying.