Saturday 28 July 2012

Standard Capacitor Values

Over time, a series of standard capacitor values have evolved, just as with resistors and inductors. Capacitors are available in a huge range of package styles, voltage and current handling capacities, dielectric types, quality factors, and many other parameters. Still, they largely hold to this range of values.

Capacitors are one of the four fundamental types of passive electronic components; the other three are the inductor, the resistor, and the memristor. The basic unit of capacitance is the Farad (F).

In order to obtain other values of capacitance, it is necessary to use parallel and/or series combinations. Often, complex combinations are used in order to satisfy multiple requirements such as handling large voltages while still providing the correct amount of capacitance.

If it is necessary to provide occasional tuning of a circuit, then it is necessary to use a variable capacitor. That can take the form of a manually adjusted capacitor, or an electrically tuned capacitor like a varactor diode (varicap).

These fixed capacitor values are the most commonly found
pFpFpFpFµFµFµFµFµFµFµF
1.01010010000.010.11.010100100010,000
1.1111101100
1.2121201200
1.3131301300
1.51515015000.0150.151.5151501500
1.6161601600
1.8181801800
2.0202002000
2.22222022000.0220.222.2222202200
2.4242402400
2.7272702700
3.0303003000
3.33333033000.0330.333.3333303300
3.6363603600
3.9393903900
4.3434304300
4.74747047000.0470.474.7474704700
5.1515105100
5.6565605600
6.2626206200
6.86868068000.0680.686.8686806800
7.5757507500
8.2828208200
9.1919109100


Common Capacitor Working Voltages (DC), By Capacitor Type
CeramicElectrolyticTantalumMylar (Polyester)Mylar (Metal Film)
10V10V
16V16V16V
20V
25V25V25V
35V35V
50V50V50V50V
63V
100V100V100V
160V
200V
250V250V
350V
400V400V
450V
600V
630V
1000V

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