Ion blower tells you how static sensitivity is classified
How is electrostatic sensitivity classified? Sensitivity classification is performed to quantitatively describe the relative sensitivity of different components. Sensitive levels are divided into multiple levels to provide raw material for the development of advanced ESD protection measures, which are used for extensive protection of more sensitive devices. Most sensitivity tests are based on human models in order to correlate results with other models. Testing large numbers of pins and polarities for ESD is very expensive.
According to the regulations of GJBl649-93, the component design should be able to provide the most sensitive components with a minimum 2000V electrostatic discharge design protection; the whole machine design should be able to provide the most sensitive components with a minimum 4000V design protection. According to the above regulations, the components should reach Class II, and the whole machine should reach Class III. As for components, although the protection design is quite effective, due to the limitations of the miniaturization of the structural design and the basic structure of the product, the sensitive voltage threshold can only be increased to a certain extent. On the other hand, the voltage threshold is closely related to the manufacturing process, so a classification test is required for each batch of products.