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.
Kepekaan ESD peranti biasanya ditentukan dari segi voltan ujian ESD tertinggi yang dilaluinya dan voltan ujian ESD terendah yang gagal bagi setiap model ESD. Oleh itu, kepekaan ESD sering dinyatakan sebagai julat voltan ESD yang peranti boleh tertakluk dengan selamat untuk setiap model ESD. Jadual berikut menunjukkan tahap pengelasan sensitiviti ESD yang ditakrifkan oleh Persatuan ESD untuk setiap model ESD.
Jadual 1. Klasifikasi Sensitiviti Komponen ESDS - Model Badan Manusia
(Setiap ESD STM5.1-1998)
Jadual 2. Klasifikasi Kepekaan Komponen ESDS - Model Mesin
(Setiap ESD STM5.2-1999)
Jadual 3. Klasifikasi Sensitiviti Komponen ESDS - Model Peranti Bercas
(Setiap 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.
