What are the problems with the hidden film capacitor?

Film capacitors are composed of many basic components. Due to raw materials and manufacturing processes, some inexperienced equipment is imperfect and some small workshops can cause film capacitors to have hidden dangers. For example, in the production, there are problems such as medium, mechanical damage, pinholes, and low cleanliness.

These reasons can result in a short life of the film capacitor and easy breakdown. In the system, the effects of overvoltage, overcurrent and ambient and low temperature caused by various reasons in the system cause the dielectric breakdown. Sparks are usually generated during breakdown, further expanding the range to form a multilayer short circuit or even a short circuit of the entire component. The voltage across the component in series with the breakdown element will increase, causing the voltage across the remaining group to increase and the current through each component to increase. This will cause the individual components to age rapidly and increase the amount of heat generated.

After reading the problems caused by the above mentioned hidden dangers, everyone should pay attention to them. What's more important is that we can reduce the trouble of half of the formal and experienced manufacturers when purchasing, and get the after-sales protection to be safe when using.