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Withstand Voltage and Capacitance Decrease in Capacitor
Film capacitors are widely used in electronic circuits because they have many excellent characteristics. But the capacitance and withstand voltage of film capacitors will decrease after a long period of use, which will seriously hinder the effect of use. So what are the factors for the reduction of capacitance and withstand voltage in film capacitors?
There are many factors that lead to the decrease in the capacitance of film capacitors, if the capacitor sealing is not tight enough, water vapor enters and leads to oxidation, which will cause the long-term instantaneous current to be too large, voltage too high, and it will trigger internal self-healing, leading to capacitance reduction. Working over-load for a long term will also lead to evaporation of metal plating, resulting in capacitance reduction.
In order to avoid the above situation leading to a decrease in film capacitor capacitance and withstand voltage, we need to make sure the manufacturing of the selected film capacitors is proper and the working condition is suitable for the film capacitors.
Thus, it is recommended to select a trustworthy manufacturer when purchasing film capacitors.JYH HSU(JEC) (or Dongguan Zhixu Electronics) not only has full models of ceramic capacitors with guaranteed quality, but also offers worry-free after-sales. JEC factories are ISO 9000 and ISO 14000 certified.
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