Why is the film capacitor better than the metal foil capacitor?

Both metallized film capacitors and metal foil capacitors are used on the market, and there are more people using metallized film capacitors. Why is this? According to the analysis of the principle, the film capacitor generally does not have a short-circuit failure condition, and the metal foil type often has such a short-circuit failure phenomenon, and the film capacitor has many advantages in comparison. But there are a few points that are worthy of attention.

1) The ability to withstand large currents is not high. However, at present, a good method has been proposed on this problem. It is possible to use a double-sided metallized film as an electrode, and also to enhance the thickness of the metallization layer, and at the same time further improve the section metal process and reduce Contact resistance compensates for its role in the power factor. The film capacitor is sealed with a plastic case to control the consistency of the scale, has excellent flame retardant performance, and has good self-healing there. The reliability is very high. The film capacitor has been widely used in filtering, noise reduction and low pulse. In the circuit.

2) A very important application of film capacitors in power technology is power factor power factor compensation. Because of the many devices on the power that convert electrical energy into other forms of energy, the load is inductive, so that other forms of energy that can be converted into electrical energy are called power supplies. The apparent power is only a part of the apparent power. For a useful amount.