µµF

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Translingual

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Symbol

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µµF

  1. (metrology, dated) Symbol for the micromicrofarad, an SI unit of electrical capacitance equal to 10−12 farads (now known as the picofarad, symbol pF).
    • 1948, Nathan Marchand, “Frequency-Modulation Receivers”, in Frequency modulation; fundamentals, apparatus, servicing (in English), New York, Toronto: Murray Hill Books, Inc., page 276:
      The de-emphasis network, consisting of a 220,000-ohm resistor and a 560-µµf capacitor in the output of the discriminator, provides the necessary amount of de-emphasis.

Usage notes

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  • The SI unit system no longer permits compound prefixes.