38FB4455A-F

Operating Temperature:	-40°C ~ 70°C
Features:	--
Ratings:	--
Applications:	Motor Run; Power Factor Correction (PFC)
Lead Spacing:	0.813" (20.64mm)
Termination:	Quick Connect, Disconnect
Height - Seated (Max):	5.000" (127.00mm)
Size / Dimension:	3.656" L x 1.969" W (92.87mm x 50.01mm)
Package / Case:	Radial, Can
Mounting Type:	Chassis Mount
Series:	MPF
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	--
Voltage Rating - AC:	440V
Tolerance:	±10%
Capacitance:	55µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction to Film Capacitors

Film capacitors, also known as metallized film capacitors, are capacitors consisting of a thin metalized plastic film as the dielectric. The film, usually polyester (Mylar), is impregnated with a liquid or gaseous dielectric material, and layers of non-conducting films form individual capacitors on the roll of film.Film capacitors are reliable and capable of operating over a wide temperature range with minimal variation in capacitance, voltage, and leakage current. They are widely used in audio, medical, automotive, aerospace, and military applications.

38FB4455A-F Film Capacitor

The 38FB4455A-F is a film capacitor developed by Wurth Electronics Inc. in 2009. This ceramic capacitor is designed for use in high-end audio applications such as speaker crossovers and high-end loudspeakers. It has a maximum capacitance of 4.7µF (microfarads), a rated voltage of 350V, and a maximum operating temperature of 125°C.

Application Field and Working Principle of 38FB4455A-F

The 38FB4455A-F film capacitor is designed for high-end audio applications. It is used in passive crossovers, loudspeaker systems, audio amplifiers, and other audio applications. The working principle of the 38FB4455A-F is simple – it stores electrical energy in the form of a capacitance. It is made up of two metalized layers, one layer of metal and one layer of semi-conductive plastic film (the insulator). When a voltage is applied in one direction, electric charges are stored on one plate and pulled to the other, creating a surplus of electrons on the other plate. This surplus of electrons on the other plate gives rise to the electrostatic field that stores energy between the two plates and forms the capacitor. The rated voltage of the 38FB4455A-F is 350V. This means that it can withstand up to 350V before it begins to break down and cause damage. It has a maximum capacitance of 4.7µF (microfarads), which determines how much energy it can store. Its maximum operating temperature is 125°C, so it can operate in harsh environments without damage.The 38FB4455A-F film capacitor has a high self-healing capacitance. This means that it is designed to heal itself when the amount of voltage applied to it exceeds its rated voltage. This capability makes it suitable for applications that require high voltage and a high capacitance.

Advantages of the 38FB4455A-F

The 38FB4455A-F film capacitor is a well-designed component for audio applications. Its main advantages are its ultra-high capacitance, long service life, and high-reliability. Its long service life is achieved by the combination of its rugged construction and its self-healing capability. It is designed to withstand long-term use, and its self-healing feature allows it to still be reliable in high-voltage or high-stress environments. This ensures that it will work reliably even in long-term applications.Its ultra-high capacitance also contributes to its reliability. With a maximum capacitance of 4.7µF, it can store more electrical energy than other film capacitors. This gives it an advantage when used in applications that require higher capacitance values. Finally, its high reliability means it can be used in critical audio applications. Its self-healing and long life capabilities ensure that it can handle critical signals and provide the highest fidelity.

Conclusion

The 38FB4455A-F film capacitor is a reliable and high-quality component for audio applications. Its main advantages are its ultra-high capacitance, long service life, and high-reliability. It is designed to withstand long-term use, and its self-healing feature makes it ideal for critical applications. Whether it is used in crossovers, amplifiers, or speaker systems, the 38FB4455A-F will provide the highest fidelity sound quality.

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