DPFF4P39J-F

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Film capacitors, commonly referred to as film capacitors, are electrical components that consist of a film dielectric material, such as polyethylene terephthalate, polypropylene or polystyrene, which is sandwiched between two metal plates. The DPFF4P39J-F is a type of film capacitor that is used in many different applications. In this article, we’ll cover the application field and working principle of this component.

The DPFF4P39J-F is a metallized polypropylene film capacitor and has low dissipation factor, high insulation resistance, high ripple current capability, wide temperature range and excellent self-healing characteristics. It has a nominal capacitance value of 4.7uF and a volumetric efficiency of 80%. It is widely used in various applications such as communications technology, active filters and power supplies, among others.

The key application field for this type of capacitor is in the field of radio frequency. Radio frequencies are the range of frequencies at which radio waves can be transmitted. As its name suggests, the DPFF4P39J-F has a high frequency performance, making it suitable for use in RF circuits. For this purpose, the capacitor helps to suppress noise and minimize frequency interference.

The DPFF4P39J-F capacitor also has excellent self-healing properties. The foil layers of the component act as dielectrics and whenever the voltage across the capacitor exceeds its insulation strength, sparks are created and the dielectric melts away. This creates a new gap and the capacitor is “healed” or “refreshed”, allowing it to operate at the same level as before.

In terms of working principle, a film capacitor is constructed of two metal plates and the dielectric film sandwiched between. The dielectric film is the key component of the capacitor. It exhibits a property known as “dielectric polarization” which is when the electric field within the dielectric is distorted and induces a net charge on the plates. The capacitance is directly proportional to the surface area of the plates and the dielectric thickness.

When a voltage is applied across the capacitor, the electric field within the dielectric material causes charges to flow. This charge flow is limited by the capacitance of the component which then results in an electric current flow through the circuit. This current is what is used to perform a variety of electrical functions such as filtering, noise suppression, and power supply regulation.

The DPFF4P39J-F is an excellent choice for many applications due to its impressive performance characteristics. Its wide temperature range, high self-healing capability, low dissipation factor and extremely high insulation resistance make it a preferred choice among engineers. It also offers excellent performance at radio frequencies and its high volumetric efficiency make it an ideal component for many types of applications.

In conclusion, the DPFF4P39J-F is a metallized polypropylene film capacitor that can be used in many types of applications. Its key application field is radio frequency and its working principle relies on dielectric polarization. It provides a high volumetric efficiency and has excellent performance characteristics such as a low dissipation factor, high insulation resistance, and wide temperature range.

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