Different devices have different levels of sensitivity to electrostatic discharge, or ESD. Thus, there needs to be a way to distinguish ESD-sensitive devices from those which are not as vulnerable to ESD. Each of the ESD models used in ESD sensitivity testing has its own classification system for categorizing devices according to their ESD sensitivity.
Citlivosť ESD zariadenia je zvyčajne špecifikovaná z hľadiska najvyššieho testovacieho napätia ESD, ktorým prejde, a najnižšieho testovacieho napätia ESD, ktorým zariadenie zlyhá, na model ESD. Citlivosť ESD sa teda často vyjadruje ako rozsah napätia ESD, ktorému môže byť zariadenie bezpečne vystavené pre každý z modelov ESD. V nasledujúcich tabuľkách sú uvedené úrovne klasifikácie citlivosti ESD definované asociáciou ESD pre každý model ESD.
Tabuľka 1. Klasifikácia citlivosti komponentov ESDS - Model ľudského tela
(Podľa ESD STM5.1-1998)
Tabuľka 2. Klasifikácia citlivosti ESDS komponentu - Model stroja
(Podľa ESD STM5.2-1999)
Tabuľka 3. Klasifikácia citlivosti komponentu ESDS - Model nabitého zariadenia
(Podľa ESD STM5.3.1-1999)
A complete ESD characterization of every new product prior to its release is highly recommended. Complete ESD characterization consists of subjecting the device to ESD testing for all of the three ESD models, i.e., HBM, CDM, MM. Data for one ESD model can not be substituted for those of the other ESD models, since good ESDS test results for one model doesn't necessarily mean that the test results will also be good for the other ESD models. Thus, a company that takes its ESD program seriously must equip itself with ESD tester(s) capable of performing the required ESD tests for each of the test models.
