FCN1913E102K

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Film Capacitors

Film capacitors, also known as plastic film capacitors, polyester film capacitors, polyethylene terephthalate capacitors (PET or polyester), or PET capacitors, are a significant type of solid dielectric capacitors. These capacitors are commonly used in various applications such as signal coupling, power conditioning, RF coupling, bypassing, and various other analog-circuit applications. Some of the common types of film capacitors include metallized film capacitors, box type film capacitors, and foil type film capacitors.

The specific type of product exemplified in this paper is the FCN1913E102K. It is a Box Type Film Capacitor, and possesses the following characteristics:

• Rated voltage: 100V
• Rated capacitance: 10,000pF (10nF)
• Housing material: PPS (polyphenylene sulfide)
• Encapsulation: Epoxy resin
• Operating temperature range: -40°C to 105°C
• Maximum allowable voltage: 20% higher than rated voltage

The FCN1913E102K\'s application field and working principle can be best understood by breaking down its internal structure, and analyzing the layers which are responsible for its working. It consists of two distinct components- a polymer film, and two metallic electrodes. The polymer film is composed mostly of polyethylene terephthalate, which is a type of polyester having excellent electrical properties. The two metallic electrodes are connected to electrical contacts, and act as the leads of the capacitor.

The paper-like film acts as the dielectric medium, allowing the capacitor to store an electric charge according to the principle of capacitance. If a voltage is applied across the electrodes, an electric field is created in the dielectric medium. This electric field causes charges to accumulate and redistribute on the capacitors’ surface and within the polymer film. The electric field then gets polarized, giving a resultant electrostatic field which is responsible for the capacitors to store an electric charge.

The FCN1913E102K specifically has several applications, such as in AC/DC applications, electrostatic discharges, and EMI/RFI suppression, as it has a very low dissipation factor, low ESR, and excellent in-circuit performance.

In AC/DC applications, the FCN1913E102K helps to eliminate electrical noise generated by components such as inductors and transformers. It increases signal clarity, and improves system performance.

In electrostatic discharges, the FCN1913E102K acts as a buffer to protect electrical components from electrical discharges. It moderates the electric field, allowing for a regulated flow of electric charge.

This capacitors is also used in EMI/RFI suppression, as the film coating reduces the interference created by other components in the circuit. In addition, its low heat dissipation reduces the possibility of circuit overheating.

Overall, the FCN1913E102K\'s wide-range of applications, coupled with its efficient working principle, makes it an ideal choice for a variety of applications. Its low dissipation factor, low ESR, and good in-circuit performance make it suitable for AC/DC applications, electrostatic discharges, and EMI/RFI suppression.

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