Due to the restriction of the ESR and heat dissipation capacity, each type of film capacitor has its specific "rated" ripple current value. Under the same terminal voltage, as the frequency increases, the impedance of the film capacitor decreases, the ripple current flowing increases. When the current flowing through the film capacitor reaches the rated current [...]
Film Capacitor principle The film is processed to allow metal atoms to attach to the film. The metal is evaporated under vacuum (1200 ° C for aluminum) to the surface of the treated film (the film is cooled to -25 ° C to -35 ° C) to form a metal layer. If the dielectric is short-circuited, [...]
一, Film capacitor A film capacitor is a capacitor in which metal foil is used as an electrode, and plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate are overlapped from both ends and then wound into a cylindrical structure. According to the type of plastic film, they are called polyethylene capacitors (also known as Mylar [...]
China is the world's largest producer and exporter of capacitors, and is also a major consumer of capacitors. In the "12th Five-Year" development plan of the capacitor industry announced recently, it is clearly pointed out that the development of capacitors during the "12th Five-Year Plan" period is: new energy matching capacitors, power inverter capacitors, power inverter [...]
Conventional film capacitors are generally classified into metallized polyester films and metallized polypropylene films depending on their materials. The polyester film capacitor is also called CL capacitor & MER capacitor; polypropylene film capacitor is called CBB capacitor & MPR capacitor. There are two main structures for each material; foil CL11, CBB11 and metallized CL21, CBB21, CBB22, [...]