靜電敏感器件的敏感等級按HBM、MM、CDM三種模式分類：
HBM模式（人體模式）：
CLASS VOLTAGE RANGE
Class 0 0 volts to ≤249 volts
Class 1A 250 volts to ≤499 volts
Class 1B 500 volts to ≤999 volts
Class 1C 1000 volts to ≤1999 volts
Class 2 2000 volts to ≤3999 volts
Class 3A 4000 volts to ≤7999 volts
Class 3B 8000 volts to ≤15999 volts
非靜電敏感器件 ≥16000 volts
MM模式（機(jī)器模式）：
CLASS VOLTAGE RANGE
M1 ＜100 volts
M2 100 volts to ＜200 volts
M3 200 volts to ＜400 volts
M4 ≥400 volts
CDM模式（器件模式）：
CLASS VOLTAGE RANGE
C1 ＜125 volts
C2 125 volts to ≤250 volts
C3 250 volts to ≤500 volts
C4 500 volts to ≤1000 volts
C5 1000 volts to ≤1500 volts
C6 1500 volts to ≤2000 volts
C7 ≥2000 volts