Operating Temperature:	-55°C ~ 110°C
Features:	--
Ratings:	X2
Applications:	EMI, RFI Suppression
Lead Spacing:	1.083" (27.50mm)
Termination:	PC Pins
Height - Seated (Max):	0.748" (19.00mm)
Size / Dimension:	1.240" L x 0.354" W (31.50mm x 9.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	F339M
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	630V
Voltage Rating - AC:	310V
Tolerance:	±5%
Capacitance:	0.68µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tray

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Film Capacitors

Introduction

Film capacitors, or known as plastic film capacitors, are class of capacitors created out of thin film of plastic. They are divided into two types, polyester film capacitors and polypropylene film capacitors. Film capacitors are characterized by their low dissipation factor and interference immunity. Due to their excellent dielectric properties, these capacitors are commonly used in various RF circuits. They are widely used for in-circuit transient suppression, to reduce peak current and differential noise, and as energy storage components in pulse power circuits.

F339MX246831JKP2T0

The F339MX246831JKP2T0 is a type of film capacitor made of polypropylene film wound with aluminum foil electrodes. It is rated for a capacitance of 10µF with a tolerance of ±10%, an operating temperature of -40 to + 85°C, and a working voltage of 250VAC. This capacitor has a wide range of applications due to its small size and low weight. It is frequently used in consumer electronics, microwave systems, signal processing, DC/AC power systems, power supplies, and other sensitive electronic devices.

Application Field and Working Principle

The F339MX246831JKP2T0 film capacitor is mainly used for rectification, inverter circuits, and other high frequency applications. With its tight tolerance, it is especially suitable for the equipment which requires high performance and stability. The working principle of film capacitor relies on the dielectric constant of the polypropylene film and the electric field generated when the capacitance is charged. The electric charges accumulate on the two electrodes until the capacitance is completely charged. After it is fully charged, the current through the capacitor decreases gradually. The accumulated charges create an electrostatic field on the dielectric film, which stores the energy. During discharging or current flow, the stored energy is released in form of pulse currents.

Advantages

Film capacitors are well known for their excellent properties such as high insulation, low dissipation factor, and excellent stability. Compared to typical ceramic capacitors, they have better temperature compensation because their capacitance changes much less with temperature. Since the electrodes are covered with plastic film, there is no chance of corrosion and electrical leakage, providing better long-term reliability. Also, their self-healing ability eliminates the need for any maintenance.

Conclusion

The F339MX246831JKP2T0 is a type of polypropylene film capacitor which can be used in a wide range of applications due to its small size and low weight. It is mainly used for rectification, inverter circuits, and other high frequency applications due to its tight tolerance. Film capacitors are well known for their excellent properties such as high insulation, low dissipation factor, and excellent stability. Although they are more expensive than other types of capacitors, the long-term reliability and durability make them a great choice for many electronic devices.

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