Refer to the PDF data sheet for device specific package drawings
The IEC ESD Stressing test is done through two modes: contact discharge mode and air discharge mode.
For the contact discharge test mode, the preferred way is direct contact applied to the conductive surfaces of the equipment under test (EUT). In the case of the USB system, the conductive surface is the outer casing of the USB connector. The electrode of the ESD generator is held in contact with the EUT or a coupling plane prior to discharge. The arc formation is created under controlled conditions, inside a relay, resulting in repeatable waveforms; however, this arc does not accurately recreate the characteristic unique to the arc of an actual ESD event.