<img src="the hobby shed.jpg" alt="the hobby shed picture">
The Hobbyshed.co.uk
Return to Info Menu

Capacitor Conversion Chart

Print pdf
A capacitor (originally known as a condenser) is a passive two-terminal electrical component used to store electrical energy temporarily in an electric field The conductors can be thin films, foils or sintered beads of metal or conductive electrolyte, etc. The non conducting dielectric acts to increase the capacitor's charge capacity. Materials commonly used as dielectrics include glass, ceramic, plastic film, air, vacuum, paper, mica, and oxide layers. Capacitors are widely used as parts of electrical circuits in many common electrical devices. Unlike a resistor, an ideal capacitor does not dissipate energy. Instead, a capacitor stores energy in the form of an electrostatic field between its plates.
The SI unit of capacitance is the farad (F), which is equal to one coulomb per volt (1 C/V). Typical capacitance values range from about 1 pF (10−12 F) to about 1 mF (10−3 F).
Ceramic capacitors have a ceramic dielectric.

Film and paper capacitors are named for their dielectrics.

Aluminium, tantalum and niobium electrolytic capacitors are named after the material used as the anode and the construction of the cathode (electrolyte)

Polymer capacitors are aluminium, tantalum or niobium electrolytic capacitors with conductive polymer as electrolyte

Supercapacitor is the family name for:
Double-layer capacitors were named for the physical phenomenon of the Helmholtz double-layer
Pseudocapacitors were named for their ability to store electric energy electro-chemically with reversible faradaic charge-transfer
Hybrid capacitors combine double-layer and pseudocapacitors to increase power density
Silver mica, glass, silicon, air-gap and vacuum capacitors are named for their dielectric.
Typical Capacitor Symbols.
Capacitors are expressed in terms of farads. Common abbreviations are uF (microfarads), nF (nanofarads), and pF (picofarads or micromicrofarads)