Metallized capacitor production

What is a metallized film capacitor?

Metallized film capacitors generally use polypropylene as the dielectric film, and use the metallized layer evaporated on the dielectric film as the electrode, which are the important power devices.

What are the different types of metallization used in capacitor films?

What are different types of metallization used in capacitor films? Metallized capacitor films have a thin coating of metal (commonly aluminium and zinc) deposited on them by vacuum deposition process. Several types and patterns are available to choose for metallization, depending on application and usage environment.

What happens when a metallized film capacitor breaks down?

When the metallized film capacitor is working at a high field strength, the weak point of the dielectric film is first broken down, and the energy stored in the dielectric film at the breakdown point is released instantaneously, causing the breakdown point and the surrounding metal electrodes to evaporate and form insulation recovery.

Are metallized film capacitors reliable?

After successful self-healing, the metallized film capacitor can continue to work, so this type of capacitor has high reliability (Sarjeant et al., 1998). Although metallized capacitors rarely fail, once a metallized film capacitor has an accident, the impact on the application system cannot be ignored.

Why do metallized film capacitors have a high energy storage density?

The thickness of the electrode of the metallized film capacitor is thin, and the dielectric film does not need extra space for the penetration of the impregnant, so the energy storage density is high, which will help us to reduce the external size of the capacitor and reduce the cost.

Why do metallized film capacitors have a digital twin?

Regardless of the metallized film capacitor’s application scenarios, the digital twin has played a role in releasing the value contained in metallized film capacitor’s data, information, and knowledge.