Shenmao Capacitors specialized in aluminum electrolytic capacitors from 1970

Dielectric strength and permittivity of axial film capacitors|Focus on mid-to-high-end brand capacitor manufacturers

by:Shenmao     2021-04-13
The so-called dielectric strength is a measure of the ability of the capacitor's dielectric to withstand voltage. The test of the dielectric strength of the axial film capacitor is to place a plastic film between two electrodes and continuously change the voltage between the electrodes from low to high until the plastic film undergoes dielectric breakdown. Use this process to measure the dielectric strength of the dielectric of the axial film capacitor. When the dielectric breakdown is caused, the voltage applied between the electrodes is higher than the test voltage. For more details, please call the toll-free hotline: 4006299138. The dielectric constant of the axial film capacitor is used to measure the ability of the dielectric used in the axial film capacitor to store electrical energy. It refers to the ratio of the capacitance between the two electrode plates of the axial film capacitor when the plastic film is used as the dielectric and the capacitance between the same two electrodes when the air is the dielectric or vacuum. The dielectric constant of the axial film capacitor represents the degree of polarization of the dielectric, that is, the strength of the dielectric's ability to restrain charge. The larger the dielectric constant of the axial film capacitor, the stronger the restraint ability of electric charge; on the contrary, the weaker the restraining ability of electric charge of the capacitor. Therefore, the dielectric used in the axial film capacitor has an effect on the capacity of the capacitor. Using the same dielectric has the same effect. And using different dielectrics, the dielectric constant is not the same, the impact is also different.
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