BFC236852393

Operating Temperature:	-55°C ~ 105°C
Features:	Long Life
Ratings:	--
Applications:	General Purpose
Lead Spacing:	0.591" (15.00mm)
Termination:	PC Pins
Height - Seated (Max):	0.547" (13.90mm)
Size / Dimension:	0.689" L x 0.197" W (17.50mm x 5.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	MKT368
Dielectric Material:	Polyester, Metallized
Voltage Rating - DC:	400V
Voltage Rating - AC:	220V
Tolerance:	±5%
Capacitance:	0.039µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Film capacitors (also known as film dielectric capacitors, polyester capacitors and film capacitors) are variable capacitors in which a thin layer of plastic film coated with metallized electrodes, usually metallized polyester or polypropylene, is used as the dielectric for storing electric energy. The film capacitor has the advantages of high energy density, small volume, light weight, wide capacitance range, low cost, good self-healing properties and good stability. BFC236852393 film capacitors are widely used in various types of electrical and electronic equipment.

Application Field

BFC236852393 film capacitors are suitable for use in AC and DC circuits, and in other applications where wet electrolytic capacitors are not suitable due to their size, weight or capacitance in a variety of applications. These capacitors are specifically designed to accommodate AC frequency rates over 4kHz and operating temperatures up to +105°C in a variety of power systems, ranging from simple AC and DC power supplies to more complex DC-DC converters. The capacitor can also be used in AC power amplifiers and PFC circuits.

Working Principle

The BFC236852393 film capacitors store electrically between two surfaces coated with metalized plastic films. The metalized surface of the film acts as the electrodes and the plastic film acts as the dielectric. The capacitance of the device is proportional to the surface area between the two electrodes and to the permittivity of the dielectric. The electrical energy stored in the capacitor is proportional to the voltage applied to the capacitor multiplied by the capacitance. At AC frequencies, the current in the circuit reverses direction. The capacitance remains substantially constant during the alternation of current flow, and the capacitor then acts as a filter for an AC circuit, allowing higher frequencies to pass through while blocking lower frequencies.

Conclusion

BFC236852393 film capacitors are a versatile type of capacitors with a wide range of operation temperatures, high capacitance and robustness. They are used in many applications where wet electrolytic capacitors are not suitable, such as power supplies, DC-DC converters, AC amplifiers, PFC circuits, and many more. The working principle of a film capacitor is based on storing and transporting electrical energy between two electrodes, using a thin plastic film as a dielectric, and allowing AC frequencies to pass through.

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