Table 3 EM SE value classification for fabrics intended for general use as EMI shields
Category/item or EMI shielding parameter | Class I (Professional use) [98] | Class II (General use) [98] | ||||
|---|---|---|---|---|---|---|
SE (dB) | SE > 60 | 60 ≥ SE > 50 | 50 ≥ SE > 40 | 40 ≥ SE > 30 | 30 ≥ SE > 20 | SE > 30 |
Categorization | Excellent | Very good | Good | Moderate | Fair | Excellent |
EM wave shielding % (%) | ES > 99.9999% | 99.9999% ≥ ES > 99.999% | 9.999% ≥ ES > 99.99% | 99.99% ≥ ES > 99.9% | 99.9% ≥ ES > 99.0% | ES > 99.9% |
Grade | AAAAA | AAAA | AAA | AA | A | AAAAA |