QXP2G155KRP7FX

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Film Capacitors

A film capacitor, more specifically a plastic film capacitor, is an electronic component consisting of a piece of plastic film as dielectric/insulation and metalizing going around the film thus forming two electrical plates, with terminals to connect one plate onto the other. Film capacitors are widely used in many applications mainly due to their high volumetric efficiency (using less space than other types of capacitors of the same capacitance value), long-term reliability, and excellent frequency characteristics.

QXP2G155KRP7FX is a screen printed film capacitor from Amveco. It features a radial KPS style construction, with an X2 Class dielectric, and is rated for 155K. It has a high capacitance of 22nF and a tolerance of < 10%. It operates best at a temperature range of -40C ~ +125C.

Application Field

QXP2G155KRP7FX is designed for use primarily in multiple types of DC-link, decoupling, and EMI/RF immunity. It has a wide range of applications, including: DC-Link applications for non-isolating and phantom power supplies, EMI/RFI noise suppression for telecom/datacom equipment, and computer peripherals, coupling applications in both analog and digital circuits, and decoupling applications in high speed logic and microprocessor circuits.

Working Principle

The manner in which this film capacitor works is by utilizing the dielectric properties of the plastic film material. This material makes it possible to form a very thin dielectric between two parallel plates (electrodes) which are typically made of metal. When a voltage is applied, electrons are attracted to one plate and repelled from the other, forming an electric field between the two plates. Thus, a certain amount of capacitance results. The higher the dielectric constant, the greater the capacitance.

The film capacitors also offer certain advantages over other types. For example, they are very stable over a wide range of temperatures and have excellent frequency characteristics. Film capacitors also have very low inductance and are virtually non-polarized, meaning that they can be used in both AC or DC circuits.

Overall, film capacitors are an excellent choice for cost-effective and reliable power conditioning and coupling applications.

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