F1778333K3DLB0

Operating Temperature:	-55°C ~ 110°C
Features:	--
Ratings:	X2
Applications:	EMI, RFI Suppression
Lead Spacing:	0.394" (10.00mm)
Termination:	PC Pins
Height - Seated (Max):	0.394" (10.00mm)
Size / Dimension:	0.492" L x 0.157" W (12.50mm x 4.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	F1778X2
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	630V
Voltage Rating - AC:	310V
Tolerance:	±10%
Capacitance:	0.033µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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F1778333K3DLB0 Application Field and Working Principle

Film capacitors are a type of capacitor which uses thin plastic film or aluminum or zinc oxide as its dielectric material, built with metalized electrodes. This type of capacitor is the most important material in many systems, from high-lying power systems such as avionic systems to more common everyday circuits.

Functionality and Applications

Film capacitors are used in many different applications, most commonly in power electronics, or high voltage systems. They are ideal for both ac and dc power applications. They have a very low equivalent series resistance (ESR), which makes them an ideal choice for power conditioning and filtering. Besides power application, they can also be found inside radios, mixers, digital audio gear, power supplies, and many other applications.They have a number of unique features that make them suited for demanding audio applications, such as good frequency response and low noise. Other benefits of film capacitors include good thermal stability, high voltage insulation, and good environmental characteristics. The F1778333K3DLB0 is a film capacitor manufactured by KEMET that is specifically designed for applications where high energy density, low ESR, and high dielectric strength are important considerations. This type of capacitor can handle up to 1000V DC and is typically used in loudspeaker crossover networks, power factor correction and DC filtering.

Working Principle

A film capacitor works by storing energy in the form of an electric field between two conducting plates, separated by a thin film of dielectric material. The two plates are usually made of an electrically conductive metal foil, with the dielectric material located in between them. The dielectric material changes the electric field formed between the two plates and modifies the current flow, resulting in a charge being stored on the capacitor plates.When an AC voltage is applied across the plates of the capacitor, an alternating electric field is created, causing the electric charge on the plates to also vary with the same frequency. This change in electric charge creates the current flow, which is then collected by the electric circuit it is connected to. This current flow is then used to power devices or equipment.At a DC voltage, the capacitor behaves more like an open circuit, as the charge on the plates quickly reaches equilibrium.

Conclusion

The F1778333K3DLB0 film capacitor is a great choice for applications requiring a low ESR, high energy density and high dielectric strength. It can handle up to 1000 volts and is ideal for loudspeaker crossover networks, as well as power factor correction and DC filtering. Its working principle is based on the generation of an electric field between two conducting plates that are separated by a thin film dielectric. This electric field modifies the current flow, resulting in a charge being stored on the capacitor plates and producing a current flow that is used to power devices or equipment.

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