Film capacitor characteristics and applicable applications

The film capacitor is a capacitor in which a metal foil is used as an electrode and a plastic film such as polyethylene, polypropylene, polystyrene or polycarbonate is stacked from both ends and then wound into a cylindrical shape. With excellent electrical characteristics, high stability and long life, it can meet a variety of different application needs. Capacitor manufacturers can optimize the characteristics of the film capacitor by selecting the appropriate dielectric for the specific application.

Polyester film exhibits good properties in general applications, with high dielectric constant, high dielectric strength, self-healing characteristics and good temperature stability, low dielectric loss, high dielectric resistance, low dielectric absorption and high dielectric strength. characteristic. Polyester capacitors are a good choice for DC applications such as decoupling, blocking, bypassing, and noise suppression at a lower cost and smaller size. They are favored by capacitor manufacturers and are also suitable for all types of film capacitors. Many.

Used by most manufacturers in applications such as AC input filters, electronic ballasts, and snubber circuits. Polypropylene film capacitors can be rated at 400V or higher for industrial three-phase applications and specialized equipment. They can also be used in switching power supplies, frequency discrimination and filter circuits, energy storage applications, and more. The double-metallized polypropylene film can withstand high voltage and high pulse load under high frequency conditions, and is also widely used in electronic ballasts, motor controllers, switching power supplies, displays, buffers, and the like.

Film capacitors are an important component in the electronics industry. Although the corresponding production and structural technologies are constantly evolving to provide greater capacitance and better electrical performance, the characteristics of these components are closely related to the old products. In this case, capacitor manufacturers offer one-to-one services that can help solve design problems and ensure the smooth completion of basic functional blocks such as interference filters, basic signal conditioning circuits, and electronic ballasts.