F1778322M3DBB0

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:	±20%
Capacitance:	0.022µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Film Capacitors

A film capacitor, or a metallized film capacitor, is a type of capacitor made from a polyester and metal film. Commonly referred to as F1778322M3DBB0, it is often used in audio and power supplies due to its superior temperature and noise characteristics. Film capacitors are specialized components that offer advantages in a number of different applications.

Application Field

Film capacitors are highly popular in both power and audio applications. Power applications often utilize small, low-voltage film capacitors for filtering and coupling, including power supplies, UPS, inverters, DC/DC converters, and motor controls. Likewise, audio applications make use of film capacitors in crossovers, instrument amplifiers, and preamps.Film capacitors are often used as bypass capacitors, which divert the current to ground, keeping noise away from the signal path. This is beneficial in audio applications because it helps preserve the integrity of the signal. In power applications, bypass capacitors help absorb spikes, surges, and other transient phenomena, protecting other components in the system.Film capacitors also excel in applications with high frequency transients. Due to their low equivalent series resistance (ESR) and low loss tangent (dissipation factor), they can safely handle rapid bursts of energy without distorting or degrading the signal. This is why F1778322M3DBB0s are often used in switching power supplies, frequency converters, rectifiers, AC inverters, AC/DC converters, and uninterruptible power supplies (UPS).

Working Principle

Film capacitors are comprised of two metalized layers separated by a dielectric film, allowing the capacitor to store and release electrical charge. The dielectric film is composed of a gas-resistant, non-porous material such as polypropylene or polyester, making the device highly stable over temperature and humidity. The metal layers act as the electrodes of the capacitor, allowing the device to accumulate an electrical charge in the form of an electric field.When an alternating voltage is applied to the film capacitor, it stores and releases an electrical charge in accordance with the alternating frequency of the voltage. This rapid charge/discharge cycle is known as electrical resonance, where the electrical energy is shifted back and forth between the film capacitor and the load connected to it. The film capacitor is able to handle these rapid shifts of energy without distorting or degrading the signal, making it a popular choice for power and audio applications.

Conclusion

F1778322M3DBB0 capacitors are specialized components with numerous advantages in various power and audio applications. They are constructed from metalized film and dielectric material, allowing them to store and release electrical charge in a process known as electrical resonance. Moreover, their low equivalent series resistance and low loss tangent make them incredibly efficient at dealing with high frequency transients. Film capacitors are used in a variety of applications, including power supplies, rectifiers, inverters, AC/DC converters, crossovers, instrument amplifiers, and preamps.

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