Operating Temperature:	-55°C ~ 105°C
Features:	--
Ratings:	--
Applications:	General Purpose
Lead Spacing:	0.295" (7.50mm)
Termination:	PC Pins
Height - Seated (Max):	0.315" (8.00mm)
Size / Dimension:	0.394" L x 0.118" W (10.00mm x 3.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	MKT1818
Dielectric Material:	Polyester, Metallized
Voltage Rating - DC:	250V
Voltage Rating - AC:	160V
Tolerance:	±10%
Capacitance:	0.047µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Film Capacitors: The Application Field and Working Principle of MKT1818347255R

Film capacitors are passive devices which are used to store an electrical charge, similar to conventional dielectric based capacitors. They utilize a thin film of metal to achieve the necessary capacitance and are able to store a much higher charge, compared to dielectric based capacitors. Film capacitors are generally used in environments that require a high-frequency response such as in RF (Radio Frequency) applications. One such film capacitor, the MKT1818347255R, is used in wide variety of applications ranging from industrial energy management to communications and signal processing. The MKT1818347255R is an axially or “standoff” mounted miniature film capacitor with a nominal capacitance of 4.7uF and an operating temperature range of -10°C to +105°C. It is also self-extinguishing and is rated both UL and CSA for class X2 safety.The MKT1818347255R is capable of handling high inrush currents and its design ensures that it is able to perform in critical applications in power management systems where reliability and low loss are essential. It also has a high Q-factor, making it an ideal choice for high frequency applications such as pulse circuits and switching power supplies. Its metalized polypropylene film dielectric also helps to reduce electro-magnetic interference, making it suitable for use in RF applications.The working principle of the MKT1818347255R is quite different to that of conventional capacitors because it uses an entirely different approach to achieve capacitance. In conventional capacitors a dielectric material is used to separate two conductive plates, creating an electrical field between them. In contrast, the MKT1818347255R utilizes a thin layer of metalized polypropylene film, without direct contact between the two conductive plates. This isolates their electrical fields which are then balanced through the use of a low resistance current path and a charge neutralizing electrode. The electrical resistance of this dielectric medium is lower than the air gap between the two plates, making it more effective in storing charges.The MKT1818347255R is also able to tolerate much higher inrush current compared to other capacitors due to its low electrical resistance, making it ideal for high frequency applications where current needs to be managed at different stages of operation. Its low ESR (Equivalent Series Resistance) ensures that it is able to handle high frequency signals without significant loss or distortion.In conclusion, the MKT1818347255R is a versatile and reliable film capacitor with a wide range of applications in industrial electronics, power supplies and communication equipment. It is designed to provide reliable performance with minimal losses and is suitable for use in high frequency applications such as pulse and switching power supplies where high reliability and low losses are essential requirements. With its metalized polypropylene film dielectric, it is also capable of managing high inrush currents, providing excellent EMC (electro-magnetic compatibility), making it an ideal choice for RF applications.

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