Electrostatic withstand voltage

Refers to the resistance to static electricity that allows power supply circuits and similar devices to continue normal operation without failure.
Causes of static electricity include three cases: discharge occurring when a charged human body or clothing comes into contact with equipment, discharge from other charged electrical or electronic devices, and charging caused by the equipment itself. As a test to evaluate electrostatic withstand capability, there is an electrostatic discharge test, with separate test methods corresponding to the three causes mentioned above. When expressing the electrostatic withstand capability against external static electricity from the human body or other electronic or electrical devices, there are the following two classifications, represented by the peak value of a repeatedly applied pulse waveform of acceptable static electricity.
(1) Electrostatic withstand capability during operation
The maximum value at which normal operation can be maintained when static electricity is applied to any part of the enclosure while the input of the power supply circuit is under rated conditions.
(2) Electrostatic withstand capability during storage
The maximum value at which no failure or destruction occurs when static electricity is applied to any part of the external surface of the enclosure, including input and output terminals, while the input of the power supply circuit is off (not operating).