Operating Temperature:	-55°C ~ 110°C
Features:	--
Ratings:	--
Applications:	DC Link, DC Filtering; High Frequency, Switching; High Pulse, DV/DT
Lead Spacing:	1.476" (37.50mm)
Termination:	PC Pins
Height - Seated (Max):	1.280" (32.50mm)
Size / Dimension:	1.634" L x 0.709" W (41.50mm x 18.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	MKP385
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	400V
Voltage Rating - AC:	200V
Tolerance:	±5%
Capacitance:	4.7µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Film Capacitors: MKP385547040JPI4T0

Introduction

Film capacitors, or plastic film capacitors, are capacitors that use a thin plastic film as the dielectric. These capacitors are often suitable for high-frequency signals due to their low dissipation factor. The MKP385547040JPI4T0 is a type of film capacitor. This article will discuss the application fields and working principle of this particular device.

Application Fields

The MKP385547040JPI4T0 is an X2 safety capacitor, and thus is mainly used in applications where high safety requirements are paramount. This device offers impregnation and self-healing characteristics, making it critical for high safety requirements and the prevention or damage due to overload, short circuit, or rapid voltage changes. The MKP385547040JPI4T0 is suitable for AC applications with a voltage of 250VAC, and a working temperature range of -25℃ to 85℃.Typical applications for the MKP385547040JPI4T0 include microwave ovens, electric ovens, and electronic appliances. The high power density of this device makes it suitable for these applications, particularly in areas where space is limited. In addition, the self-healing properties of this device make it ideal for safety-related applications, and for applications where transient noises may be present.

Construction and Working Principle

The MKP385547040JPI4T0 capacitor consists of a dielectric material sandwiched between two electrodes. The most common dielectric material used in this type of capacitor is a polypropylene film, however, other dielectric materials are also used depending on the application requirements. The electrodes are typically vapor deposited from a metal, such as aluminum, for low voltage rating capacitor, or from a combination of metal and inorganic materials for higher voltage rating capacitors.When a voltage is applied, an electric field is generated which gives rise to electrostatic field. This electrostatic field causes an electrostatic attraction between the positive and negative electrodes, creating an electric field within the dielectric material. This electric field stores electric charge, and the magnitude of this charge is a measure of the capacitance of the device. The capacitance of the device is highly dependent on the size and type of the dielectric material. When the voltage is removed, the stored electrostatic charge dissipates and the capacitance of the device returns to its original value. This feature, known as self-healing, is useful in applications where transient or overload currents are present, as it enables the capacitor to return to its designed state without permanent damage.

Conclusion

The MKP385547040JPI4T0 is a type of film capacitor, which is widely used in applications where high safety requirements and low-medium voltages are required. This device has a wide range of applications including microwave ovens, electric ovens, electronic appliances, and safety-related applications. Its construction consists of a dielectric material such as polypropylene film sandwiched between two electrodes, and its working principle is based on the creation of an electric field between the positive and negative electrodes. The MKP385547040JPI4T0 is a reliable and cost-effective option for many applications.

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