Do I need to cover the lid for ESD-sensitive components in anti-static packaging?
The anti-static turnover box is equipped with circuit boards, and generally needs to be covered. The cover correctly installed on the turnover box can provide sufficient shielding for the circuit boards inside. These turnover boxes can not only provide mechanical integrity under normal use , And can also provide ESD safety internally.
The anti-static turnover box can effectively release the static charge accumulated on the surface of the object, so that it will not produce charge accumulation and high potential difference; correctly covering the lid has two functions:
1. Shield the electrostatic field
2. Block the electrostatic discharge current from passing through sensitive components
In addition, it can also provide mechanical protection for the sensitive components in the turnover box.
If the cover is removed, any stray electric field can cause the charging of many individual conductors on the circuit board, and these induced charges are the source of ESD. The potential sources of stray electric fields are many: people, clothing, ungrounded motorcycles, displays, furniture, compartments, any ungrounded conductor, any insulator, electromagnetic interference, etc. The circuit board in the open ESD shipping box will pass through (or be exposed to) several charged power sources (electric fields) when transported by a grounded vehicle, which will also cause problems with internal equipment.