Main performance indicators of commonly used capacitors
Nominal capacity and allowable error: the capacity of a capacitor to store electric charge. Commonly used units are F, uF, and pF. The capacitance number marked on the capacitor is the nominal capacity of the capacitor. The nominal capacity of the capacitor and its actual capacity will have an error. The allowable error levels of commonly used fixed capacitors are shown in Table 2. The nominal capacity series of commonly used fixed capacitors are shown in Table 3. Generally, the capacity is written directly on the capacitor, and numbers are also used to mark the capacity. Usually when the capacity is less than 10000pF, the unit is pF, and when it is greater than 10000pF, the unit is uF. For the sake of simplicity, capacitors larger than 100pF and smaller than 1uF are often not marked with units. If there is no decimal point, its unit is pF, and if there is a decimal point, its unit is uF. If some capacitors are marked with "332" (3300pF) with three significant digits, the first and second digits of the capacitance are given by the two digits from the left, and the third digit indicates the number with 0 after it. The unit It is pF.
Rated working voltage: In the specified working temperature range, the capacitor can work reliably for a long time, and the maximum DC voltage it can withstand is the withstand voltage of the capacitor, also called the DC working voltage of the capacitor. If it is in an AC circuit, it should be noted that the maximum value of the applied AC voltage cannot exceed the DC working voltage value of the capacitor. Commonly used fixed capacitor operating voltages are 6.3V, 10V, 16V, 25V, 50V, 63V, 100V, 2500V, 400V, 500V, 630V, 1000V.
Release time : 2020-04-09