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pF・nF・µF・Fの相互変換

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Required Parameters

Capacitance value

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Quick Answer

Capacitance units: 1 F = 10⁶ µF = 10⁹ nF = 10¹² pF. Each prefix step is ×1000. The standard decoupling capacitor is 100 nF (0.1 µF). Capacitor codes like 104 are in picofarads: 10 + 0000 = 100,000 pF = 100 nF.

Documentation

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Calculadora de Conversao de Capacitancia

Converta entre unidades de capacitancia.

Design Notes

Capacitance unit confusion is one of the most common errors in electronics design. Japanese datasheets prefer nF, American datasheets prefer µF. SPICE simulation uses 'u' for micro and 'm' for milli (not micro!) causing simulation errors.

Common Mistakes

1
Using 'm' for micro in SPICE — SPICE 'm' means milli (10⁻³). Use 'u' for micro (10⁻⁶).
2
Confusing capacitor code units with resistor code units — capacitor codes are in picofarads.
3
Not accounting for DC bias derating when selecting MLCC capacitors — actual capacitance can be 50-70% less than rated.