QXK2E684KTP7ZHFP

Mounting Type:	Through Hole
Features:	--
Ratings:	--
Applications:	General Purpose
Lead Spacing:	0.689" (17.50mm)
Termination:	PC Pins
Height - Seated (Max):	0.748" (19.00mm)
Size / Dimension:	0.807" L x 0.283" W (20.50mm x 7.20mm)
Package / Case:	Radial
Series:	QXK-ZH
Operating Temperature:	-40°C ~ 105°C
Dielectric Material:	Polyester, Metallized
Voltage Rating - DC:	250V
Voltage Rating - AC:	125V
Tolerance:	±10%
Capacitance:	0.68µF
Part Status:	Active

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Film Capacitors

Film capacitors are a type of capacitors that use a thin, dielectric film of plastic to store electrical charge. These capacitors are typically defined into two categories: paper and foil, depending on the type of dielectric film used. The QXK2E684KTP7ZHFP is a high-end film capacitor that belongs to the paper variety, and it is an essential component for numerous electronic and electrical equipment and applications.

Application Field

The QXK2E684KTP7ZHFP paper film capacitor is a polyester-based device, and it is ideal for audio equipment, power supply circuits, and other applications that require low ESR (Equivalent Series Resistance) and high ripple current. This film capacitor is used for power filtering, snubber circuits, and anti-interference protection in a wide range of power electronics, such as motor drives, UPSs, and solar inverters.

Working Principle

Film capacitors can be broken down into two major parts: the dielectric film, which stores the electrical charge, and the conductor plates, which help to disperse and spread out the charge. In the QXK2E684KTP7ZHFP paper film capacitor, the dielectric layer is the polyester film, a dielectric material with a very low leakage current. The conductor plates, meanwhile, are constructed from copper foil and are made in a structure that enables a low ESL (Equivalent Series Inductance).As charge is stored within the dielectric layer, the distance between the two plates controls the capacitance value. When charge is applied to a film capacitor, its impedance increases, creating a filter effect. This impedance is typically highest at low frequencies and lowers as frequency increases. The QXK2E684KTP7ZHFP provides excellent frequency characteristics, making it suitable for many applications.

Pros and Cons

Film capacitors have multiple advantages, such as high insulation resistance and excellent temperature stability. The QXK2E684KTP7ZHFP is especially desirable for its low ESR, which helps to ensure continual operation and increases reliability in applications such as motor drives and UPSs. Furthermore, film capacitors typically require a lower voltage than other types of capacitors and are available with additive voltage and capacitance tolerance of up to ±10%.On the other hand, film capacitors may have shorter lifetimes than other capacitor types due to their very thin dielectric layers. The QXK2E684KTP7ZHFP is no exception, with a rated lifetime of 1,000-3000 hours in temperatures below 85°C. Therefore, it is important to take into account the expected usage and environment of the application when selecting a film capacitor.

Conclusion

The QXK2E684KTP7ZHFP film capacitor is a high-end device that provides high ripple current, low ESR, and excellent frequency characteristics. Film capacitors are a convenient choice for a variety of power electronic and electrical equipment applications owing to their low voltage, good insulation resistance, and temperature stability. Although they may have shorter lifetimes than other capacitor types, they offer the added benefit of tolerance of up to ±10%. The QXK2E684KTP7ZHFP, therefore, is an optimal choice for applications such as motor drives and power supply circuits.

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