305PSB850K4R

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Film Capacitors

Film capacitors are a type of electronic component used in a range of electrical applications.The 305PSB850K4R is a popular film capacitor model from Vishay Intertechnologies. It features small size and high reliability, and its versatile use makes it suitable for use in a variety of situation. In this article, we will discuss the application field and working principle of the 305PSB850K4R.

Application Field of 305PSB850K4R

The 305PSB850K4R film capacitor can be used in a variety of applications. It is commonly used as a coupling and decoupling capacitor, filtering capacitor, snubber capacitor, and as a high-frequency signal bypassing capacitor.

It is suitable for use in voltage regulation and power supply applications, as well as in printed circuit boards (PCB) and printed wiring boards (PWB). In particular, the 305PSB850K4R is popular as a high-frequency bypass capacitor in mobile phone applications. It is a reliable component which can withstand a wide range of frequencies, such as from 1kHz to 4GHz.

Working Principle of 305PSB850K4R

A film capacitor is a passive electrical component, meaning that it does not require an external power source to operate. Instead, it relies on electrostatic attraction and repulsion to generate an electric field between two metal plates filled with a dielectric material.

The 305PSB850K4R capacitor utilizes a polyethylene-naphthalate (PEN) film as the dielectric material, sandwiched between two silver-coated steel electrodes. PEN is a polyester which is lightweight and has a high dielectric constant.

The dielectric material governs the capacitor\'s capacitance, which is a measure of how much electric charge it can store. The higher the dielectric constant, the higher the capacitance and the greater the charge a capacitor can hold. The PEN film in the 305PSB850K4R\'s design helps the capacitor to hold a large amount of charge, making it suitable for use in various applications.

The 305PSB850K4R is also credited with having low ESR (equivalent series resistance), a property which is important for use in applications where it can act as a filter and reduce interference in electrical circuits. Its low ESR means that it can maintain a steady electric current even when exposed to varying temperatures and frequencies.

Conclusion

The Vishay Intertechnologies 305PSB850K4R film capacitor is a reliable component which can be used in a variety of applications. Its small size, high dielectric constant, and low ESR make it suitable for use in voltage regulation and power supply applications, as well as in mobile phone circuits and PCBs. Its versatility makes it an ideal choice for any application requiring a reliable capacitor.

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