DME2W2P7K

Operating Temperature:	-55°C ~ 125°C
Features:	--
Ratings:	--
Applications:	General Purpose
Lead Spacing:	0.886" (22.50mm)
Termination:	PC Pins
Height - Seated (Max):	0.689" (17.50mm)
Size / Dimension:	1.024" L x 0.394" W (26.00mm x 10.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	DME
Dielectric Material:	Polyester, Metallized
Voltage Rating - DC:	250V
Voltage Rating - AC:	160V
Tolerance:	±10%
Capacitance:	2.7µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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DME2W2P7K Application Field and Working Principle of Film Capacitors

Film capacitors are passive components that store electrical energy. The electrical energy is stored between two conductors, which are separated by a dielectric film. Film capacitors are used for a variety of applications including signal coupling, bypassing, timing, filtering, and protection.

Classification of Film Capacitors

Film capacitors are classified in a variety of ways. They may be divided into two main categories: metallized and polyester. Metallized capacitors have an extremely thin metal coating deposited on the dielectric film to create the capacitor\'s electrodes. Polyester capacitors use a process of vacuum evaporating metal onto an impregnated polyester film. The type of film used to make the capacitor, the presence or lack of hydrophobic and hydrophilic coatings, the type of dielectric used, and the construction of the capacitor can also be used to classifying capacitors. Additionally, film capacitors may also be classified in terms of their polarity, voltage rating, temperature coefficient, dielectric absorption, dissipation factor, and capacitance tolerance.

DME2W2P7K - Film Capacitor

The DME2W2P7K is a film capacitor made of polyester film with metallized electrodes. This capacitor has a temperature coefficient of -60ppm/C, maximum operating temperature of +105C, and a maximum capacitance of 0.002 µF. This film capacitor has a voltage rating of 250VAC and a capacitance tolerance of 20%.

Applications of Film Capacitors

Film capacitors are used in a variety of applications, such as decoupling, energy storage, filtering, timing, oscillator circuits, noise suppression, and coupling. They can be used in both AC and DC circuits, and in both low and high voltage applications.Film capacitors are used for decoupling in electronic circuits, as they are able to absorb and store transient pulses. Film capacitors can also be used for noise suppression, as they are able to absorb noise signals and disrupt them before they reach downstream components. In addition, film capacitors are also used for timing or delay purposes. As capacitors have a specific amount of time they take to charge and discharge, this capability can be used for timing certain signals in electronic circuits.

Working Principle of Film Capacitors

The basic working principle of a film capacitor is based on the same physics principles as other types of capacitors, where energy is stored in an electric field between two conductors. In a film capacitor, the dielectric film is the insulator between the two conductors, and the dielectric acts as the dielectric of the capacitor. The electric field is created when a voltage is applied to the capacitor, and the size of the electric field determines the capacitance of the device. As the applied voltage across the two conductors is increased, the electric field also increases and the capacitance increases accordingly. As the applied voltage is decreased, the electric field decreases and the capacitance of the film capacitor decreases. In addition, film capacitors also have a frequency response, meaning that their capacitive reactance varies with frequency.

Conclusion

The DME2W2P7K film capacitor is a polyester film capacitor with metallized electrodes. This capacitor has a temperature coefficient of -60ppm/C, maximum operating temperature of +105C, and a maximum capacitance of 0.002 µF. Film capacitors are used in a variety of applications, such as decoupling, energy storage, filtering, timing, oscillator circuits, noise suppression, and coupling, and they work on the same basic principles as other types of capacitors.

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