MKT1818422065D

Film Capacitors

Film capacitors, also known as film dielectric capacitors, plastic film capacitors, film-foil capacitors, polyester capacitors and PPS capacitors, are a type of electric capacitors which uses a plastic film as the dielectric, with metal deposited on the surfaces as electrodes. They are characterized by very good electrical and physical properties such as long term stability, reliability, small losses, nonlinearity, etc. The most widespread construction is formed by winding a plastic film around a cylindrical insulation support and the deposition of metal layers as electrodes on both sides of the film. Film capacitors find their application in many areas such as switch mode power supplies, DC/DC converters, high power amplifiers, power line conditioners, power factor correction, etc

MKT1818422065D and Its Application Field and Working Principle

MKT1818422065D is one kind of film capacitor which is widely used in many fields for its high performance. It works as a typical capacitor, which serves to boost or store electric current, depending on the design. MKT1818422065D has metallized polyester film as its dielectric and copper-clad aluminum leadout wires and it is a non-inductive capacitor. This capacitor can bear high dv/dt values when switching impulses appear in the application circuit.

Application fields of MKT1818422065D include Signal coupling/decoupling, interstage coupling, blocking, by-pass and energy storage systems. It has especially high applications in automotive electronics, regulation, power supply, lighting systems and converters. It is used for high temperature and long working life applications. Moreover, its low leakage current and low dissipation factor makes it suitable for pulse applications as well as some RF applications.

MKT1818422065D is a polyester film capacitor which utilizes a polyethylene terephthalate (PET) film as a dielectric, with one side of this film being metallized with aluminum while the other side is metallized with copper. The PET film typically has a very low dielectric absorption and is the most widely used film. The two metals in this type of capacitor construct a simple dual layer device, forming the A/C capacitance. The functional working principle of the capacitor is based on the storage of electric charges between the two total opposite electrodes when an AC voltage is applied. The capacitor can store energy efficiently as long as the maximum voltage applied does not exceed its limit and this stored energy can be discharged later when the AC voltage drops.