The smallest size capacitor is the "01005" chip (electrolytic) capacitor with a dimension of only 0.4 mm × 0.2 mm. Electrolytic capacitors have a high capacitance because there is a very thin oxide layer between the anode and cathode, which can be about 1 nm.
Capacitance, a property of an electric conductor or set of conductors that is measured by the amount of separate electric charge that can be stored on it per unit change in electric potential.
C = Q / V
Where,
Q denotes the charge of the conductor,
V denotes the potential applied across the conductor and
C is proportionality constant, called capacitance
Two most important factors are:
- Larger plate area results in more field flux (charge collected on the plates)
- Closer spacing results in a greater field force, which results in a greater field flux.
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