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Preferred Values: CapacitorsCapacitors are available in several series of fixed decade values, the number of values provided with each series being governed by the tolerance involved. In order to cover the full range of capacitance values using capacitors having a ±20% tolerance it is necessary to provide six basic values (known as the E6 series). More values are available in the series which offers a tolerance of ±10% and consequently the E12 series provides twelve basic values. In both cases, decade multiples of the basic series are available (e.g. x10, x100, x 1,000).
