Is the loss of the film capacitor related to the humidity

The use of film capacitors in a wet environment makes the surface of the film capacitor gradually condensate. These water will increase the leakage current of the film capacitor, which causes the loss of the capacitor to increase. If the moisture in the surface of the film capacitor or the water in the surrounding environment enters the inner of the capacitor, it will be correct. The metal inside the capacitor plays an important role in oxidation and corrosion, and also leads to an increase in the loss of film capacitors.

The same capacitor external leads will be oxidized or corroded, which will also increase the loss of film capacitors. Therefore, it is necessary to ensure the drying environment and the moisture resistance of the film capacitor. We should also pay attention to the ambient temperature when using film capacitors. This ensures the normal life time of film capacitors.