WMF1S27K-F

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Film capacitors, also known as plastic film capacitors or polyester capacitors, are widely used electronic components. The WMF1S27K-F is an example of this type of capacitor, with a range of features and applications. This article discusses those features and applications, as well as the underlying working principle.

Features of the WMF1S27K-F

The WMF1S27K-F is a metallized polyester film capacitor. It has a voltage rating of 250VAC (315VDC) with a temperature range of -40 to +85°C. It has a three-term foil construction with a built-in safeguard against arcing and dendrite growth. It also has a low-loss dielectric, good radiation resistance, a high insulation resistance, and a high-dielectric strength.

The WMF1S27K-F is available in three sizes: 10mm, 15mm, and 20mm. The 10mm and 15mm sizes have an aluminum case, while the 20mm size has a stainless steel case. The 10mm and 15mm sizes can be ordered with radial or axial leads, while the 20mm size can be ordered with or without soldering lug.

Application of the WMF1S27K-F

The WMF1S27K-F is typically used in high-voltage circuits such as in AC/ DC converter applications, inverter and switch mode power supplies, and voltage multipliers. The capacitor has high dielectric strength and insulation resistance, which makes it suitable for a variety of industrial applications. It also has good thermal stability and a low loss dielectric, which make it an ideal choice for radio frequency applications.

The WMF1S27K-F can also be used in motor start circuits. Its high insulation resistance and low-loss dielectric enables it to withstand high inrush currents and high-frequency switching. Additionally, its low dielectric absorption and internal arcing safeguard make it a suitable capacitor choice for motor start circuits.

Working Principle of the WMF1S27K-F

The working principle of the WMF1S27K-F is based on the principles of capacitors. A capacitor is an electrical device consisting of two conducting plates separated by a layer of dielectric material. When a voltage is applied to the capacitor, the dielectric material stores electrical energy in the form of an electrical field. The amount of energy stored in a capacitor is determined by its capacitance. The capacitance of a capacitor depends on several factors, including the size of the conducting plates, the type of dielectric material, and the distance between the plates.

The WMF1S27K-F uses a metallized polyester film for its dielectric material. The film is distributed between two metal electrodes, which create the plates required for the capacitor to store electrical energy. The polyester film has excellent dielectric properties, which allow the capacitor to store a large amount of energy within a small form factor. Additionally, the metallized film provides better mechanical and electrical robustness than traditional film capacitors.

Conclusion

The WMF1S27K-F is a metallized polyester film capacitor with a range of features and applications. It has a voltage rating of 250VAC/ 315VDC and a temperature range of -40 to +85°C. It can be used in a variety of industrial and radio frequency applications, such as AC/DC converters, inverters, switch mode power supplies, voltage multipliers, and motor start circuits. Its working principle is based on the principles of capacitors, which utilizes a metallized polyester film as the dielectric material between two metal electrodes.

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