QYX1H153KTP1FD

Film Capacitors

Capacitors are electronic components that store energy in the form of an electric field. Film capacitors are a type of capacitor that use a thin film as the dielectric insulator between metal plates, instead of the ceramic material used in traditional capacitors. The QYX1H153KTP1FD capacitor is an example of a film capacitor.

Application Field

Film capacitors are typically used in high frequency applications due to their excellent performance at high frequencies. They are used in power supplies, radio frequency systems and other circuit applications where high frequency signals are present. Their high frequency performance is due to their low equivalent series resistance and the capacitance is maintained over a wide range of frequency variations. This makes them ideal for use in applications requiring high frequency stability such as motor drivers and switching power supplies.

Film capacitors are also used in critical circuits such as audio, where their low audible noise and excellent frequency response make them ideal for use with sensitive components such as amplifiers and microphones.

Film capacitors are also used in medical equipment such as Magnetic Resonance Imaging (MRI) scanners and X-ray machines, where their excellent dielectric properties allow them to pass high voltage signals while offering good stability and low noise.

Film capacitors are also used in high voltage applications such as power transmission and distribution systems, where their excellent insulating properties make them ideal for use with AC power systems. Film capacitors are also used in automotive applications such as alternators, fuel injectors and starter motors.

Working Principle

Film capacitors are constructed of two electrodes placed between two layers of dielectric material, which may be a variety of materials, such as polypropylene, polyester, polyethylene, or polyimide film. The electrodes are made of metals such as aluminum, copper or tin. The dielectric material is chosen based on its specific properties, such as dielectric strength, capacitance, dissipation factor, voltage breakdown, and dielectric absorption.

Film capacitors are connected in series or parallel to form an equivalent capacitor whose total capacitance is the sum of individual capacitances. The equivalent capacitance is determined by the material used for the dielectric, its thickness, the area of the electrodes and their spacing.

Film capacitors are usually constructed to provide a capacitance of 4.7nF to 47nF, with a voltage rating of 63VDC to 3kVDC. They have excellent stability, low equivalent series resistance, low dissipation factor, low leakage, and excellent dielectric absorption.

Film capacitors are used extensively in high frequency applications such as power supplies, radio frequency systems, and high voltage applications such as automotive alternators, fuel injectors and starter motors. Due to their excellent performance, these capacitors are widely used for a variety of applications.