PHE840MB5470MB04R17 Datasheet/PDFFilm capacitors, also known as plastic film capacitors, are electrical components that, similarly to the more widely used electrolytic capacitors, are mainly employed for energy storage and filtering applications. They are becoming increasingly popular for their low operating temperature coefficient and their high insulation resistance, as compared to other types of capacitors.
The PHE840MB5470MB04R17 film capacitor is a polyethylene-naphthalate (PEN) film, metallized polypropylene, surface-mount capacitor. This capacitor’s construction is composed of a polypropylene core, to which a PEN film is applied and over which is laid strips of a shiny metal foil, in order to facilitate the electrical connection.
The most important applications of the PHE840MB5470MB04R17 are in snubber, high frequency, and high-voltage circuits, as it’s able to sustain a voltage of 850V AC and is able to discharge and absorb currents up to 37.9A.
The PHE840MB5470MB04R17 is made to store electric energy in the form of an electrostatic field. Its working principle is based on the physical effects of electricity and electromagnetism in matter. It works by taking advantage of the fact that electric fields are affected by the availability of electric charge in materials. When the capacitor is charged, with an electric force applied from outside, the film fills with an electric charge, and thus creates an electric field in the in the form of an electrostatic field between the film’s electrical plates. This creates a capacitance, which is the ratio of the amount of charge stored in the film to the electric potential difference between the film’s plates.
The PHE840MB5470MB04R17 is notable due to its high operating temperature coefficient and its high insulation resistance. This property allows it to perform correctly even in more adverse temperature ranges and when subject to higher voltages. This capacitor’s ability to handle high voltages make it highly reliable when used in snubber, high frequency, and high-voltage circuits. It also has a good working life and several environmental attributes.
Overall, the PHE840MB5470MB04R17 is a very good capacitor for its purpose as it provides a good combination of features such as low operating temperature coefficients, high insulation resistance, good working life, and environmental attributes. As such it is a suitable choice for energy storage and filtering applications.