Inductance Conversion
Picohenry to henry conversion
Required Parameters
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Quick Answer
1 H = 1000 mH = 1,000,000 µH = 10⁹ nH. Each prefix step is ×1000. RF inductors use nH, switching regulator inductors use µH, power inductors use mH, and transformer primaries use H.
Calculateur de Conversion d'Inductance
Convertissez entre unites d'inductance.
Design Notes
Inductance selection for switching regulators: L = (Vin-Vout) × Vout / (Vin × fsw × ΔIL). Higher inductance reduces ripple but slows transient response. Always check saturation current and SRF in the datasheet.
Common Mistakes
- 1
Forgetting that every conductor has parasitic inductance (8-10 nH per cm of PCB trace).
- 2
Using an inductor above its self-resonant frequency (SRF) where it behaves as a capacitor.
- 3
Ignoring DC bias effects — inductance drops significantly as current approaches the saturation rating.
Knowledge Base
Quelles sont les unités d'inductance ?
L'unité SI est le henry (H). En pratique : mH (10⁻³ H), µH (10⁻⁶ H), nH (10⁻⁹ H). Les selfs de puissance sont en µH, les filtres EMI en mH, les inductances RF en nH.
Quelle inductance pour un convertisseur buck ?
Valeurs typiques : 1–2,2 µH (fréquence MHz), 4,7–22 µH (100–500 kHz), 100–470 µH (basse fréquence). Le courant de saturation doit dépasser le courant crête du convertisseur.
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