B32778G4756J000

ESR (Equivalent Series Resistance):	5.6 mOhms
Features:	Long Life
Ratings:	--
Applications:	DC Link, DC Filtering
Lead Spacing:	2.067" (52.50mm)
Termination:	PC Pins
Height - Seated (Max):	1.772" (45.00mm)
Size / Dimension:	2.264" L x 1.181" W (57.50mm x 30.00mm)
Package / Case:	Radial - 4 Leads
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 105°C
Series:	B32778
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	450V
Voltage Rating - AC:	--
Tolerance:	±5%
Capacitance:	75µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Film Capacitors

Film capacitors are a widely used type of capacitor. They are made by winding layers of metallised film (A thin film of plastic material, usually polypropylene, onto which a metallic layer of aluminium or zinc is deposited) into cylindrical shapes or flat packages. One of the most famous film capacitors is the B32778G4756J000. It is designed for use in medical, automotive, telecommunications, power supply, and industrial applications.

Main Features

The B32778G4756J000 film capacitor has several notable features. The most unique of them is its high temperature range from -55°C to +155°C, which allows applications in extreme conditions. It also features a self-healing property, meaning that it can automatically repair itself in case of damage due to overvoltage or short circuiting. Moreover, its high stability and low ESR (Equivalent Series Resistance) values make it suitable for use in high power applications.

Application Field

The B32778G4756J000 capacitor is designed for use in medical, automotive, telecommunications, power supply, and industrial applications. It is well-suited for DC-Link applications, where it can be used to store energy, filter noise, and act as a voltage regulator. It is also widely used in DC-DC converters for voltage level shifting. In medical applications, this film capacitor is ideal for use in medical-grade power converters, where stable power supply is extremely important.

Working Principle

Film capacitors work on the principle of electrostatic capacitance. This means that when a voltage is applied across its two electrodes, the area of its electrodes determines the capacitance of the capacitor. The B32778G4756J000 film capacitor is constructed with metallised polypropylene film (MPP), which provides greater capacitance than other types of capacitor, making it suitable for applications requiring high capacitance. When a voltage is applied across the electrodes of the film capacitor, an electric field is developed across the dielectric material, and the capacitance is maximized. As the voltage is increased, the capacitance of the capacitor increases until it reaches its maximum value. At this point, the capacitor is said to be "fully charged". In a DC circuit, the capacitance remains constant.

Advantages

The B32778G4756J000 capacitor has several advantages over other types of capacitors. It features a high temperature range, making it suitable for use in extreme conditions. It is also self-healing which means that it can repair itself in case of a fault. Its high capacitance makes it suitable for high power applications. Additionally, it has low ESR and excellent stability for reliable performance.

Conclusion

The B32778G4756J000 is a high-quality film capacitor with a wide variety of applications in medical, automotive, telecommunications, power supply, and industrial applications. Its high temperature range, self-healing properties, and high capacitance make it ideal for use in extreme conditions or high power applications. Its low ESR and excellent stability also provide reliable performance.

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