FCC Part 15 Conducted emission (CE) limits
FCC 47 CFR §15.107(a) Class B conducted emission limits (150 kHz - 30 MHz, LISN 50 µH/50 Ω). The 0.15-0.5 MHz limit decreases with the logarithm of the frequency. Class A limits (§15.107(b)): 0.15-0.5 MHz 79/66 dBµV, 0.5-30 MHz 73/60 dBµV (QP/AV).
Conducted Class B dBµV
Limit curve (log scale)
| Frequency range | Limit | Unit | Detector |
|---|---|---|---|
| 150.00 kHz - 500.00 kHz | 66 → 56 | dBµV | QP |
| 150.00 kHz - 500.00 kHz | 56 → 46 | dBµV | AV |
| 500.00 kHz - 5 MHz | 56 | dBµV | QP |
| 500.00 kHz - 5 MHz | 46 | dBµV | AV |
| 5 MHz - 30 MHz | 60 | dBµV | QP |
| 5 MHz - 30 MHz | 50 | dBµV | AV |
Data sourced from industry standards, for engineering reference only. Consult official publications for compliance and certification.