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.
Įrenginio ESD jautrumas paprastai nurodomas pagal didžiausią ESD bandymo įtampą, kurią jis praeina, ir mažiausią ESD bandymo įtampą, kurios nepavyksta pagal ESD modelį. Taigi, ESD jautrumas dažnai išreiškiamas kaip ESD įtampos diapazonas, kurį prietaisas gali saugiai veikti kiekvienam ESD modeliui. Toliau pateiktose lentelėse pateikti ESD jautrumo klasifikacijos lygiai, kuriuos ESD asociacija nustato kiekvienam ESD modeliui.
1 lentelė. ESDS komponentų jautrumo klasifikacija - Žmogaus kūno modelis
(Pagal ESD STM5.1-1998)
2 lentelė. ESDS komponentų jautrumo klasifikacija - Mašinos modelis
(Pagal ESD STM5.2-1999)
3 lentelė. ESDS komponentų jautrumo klasifikacija - Įkrauto įrenginio modelis
(Pagal 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.
