Capacitor material processing technology

What materials are used in a solid tantalum capacitor?

Materials The main component of the ESR in the solid tantalum capacitor is the Mn02 counterelec- trode. The recent use of another material in this application has taken on added importance. Most of the investigation involves polymer films. These will allow a reduction in the resistivity of this electrode element and improve the performance further.

How are high voltage film capacitors made?

Design of High-Voltage Film Capacitors Film capacitors are manufactured in the form of a winding using a capacitor winding machine, or in the form of a stack of dielectric films. These two manufacturing technologies are also respectively known as coil technology and the stacking technique [7, 8].

How polymeric films are used in high-voltage capacitor manufacturing process?

Different technologies are used in high-voltage capacitor manufacturing process, and at all stages of this process polymeric films must be used, along with an encapsulating material, which can be either liquid, solid or gaseous. These materials play major roles in the lifespan and reliability of components.

What is the evolution of capacitor technology?

An overview of the evolution of capacitor technology is presented from the early days of planar PIS (poly/insulator/silicon) capacitors to the MIM (metal/insulator/metal) capacitors used for todays 65 nm technology node.

How are metallized capacitors made?

The coiling of the metallized capacitors is achieved by winding two sheets of metallized film on a hard, insulating cylindrical core (Figure 5). During the manufacturing process, the rolls are wound as tightly as possible to prevent the formation of air vacuoles or cavities .

What is the history of film capacitors?

Over the history of film capacitors, from a material perspective, the major breakthrough started with the move from paper to polymers, and especially to polypropylene, which finally became the dominant dielectric in film capacitors today.