A microfarad (μF) is a unit of capacitance. It is one millionth of a farad. The abbreviation μF is commonly used in electronics and radio frequency engineering.

A farad (F) is the SI derived unit of electric capacitance, named after the English physicist Michael Faraday (1791–1867). It can be defined as the capacitance across which, when charged with one coulomb, there exists a potential difference of one volt.[1][2]

The related term “microvolt” was formerly also a synonym for micromicrofarad (μμF), but since it is no longer considered an SI unit, its use as such has been deprecated by ISO 80000-3:2009,[3] and now refers to the magnitude or amplitude of voltage or current in electrical systems.

Microfarads are commonly used in electronic circuits where they are combined with resistors to form capacitors by connecting two metallic plates between two terminals through which an electric current flows. Capacitors are widely used as energy storage devices in electrical circuits and components of many common electronic devices; their main uses are in filtering,[4] smoothing synchronous.

Last modified: September 21, 2022