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Discover the JFB Metallized Polyester Film Capacitor by jb Capacitors

Home / Discover the JFB Metallized Polyester Film Capacitor by jb Capacitors

When it comes to plastic film capacitors, jb Capacitors offers a versatile selection tailored to meet various electronic needs. Among these, the JFB series stands out as the most common and widely used type. This popularity stems from its exceptional self-healing properties, making it an excellent choice for applications such as filtering, DC blocking, coupling, and general communication equipment.

Key Features of the JFB Series

Understanding the unique features of the JFB Metallized Polyester Film Capacitor can help you appreciate its value and suitability for different applications:

  1. Non-inductive Design: The JFB capacitors are designed to be non-inductive, which means they do not introduce unwanted inductance into the circuit. This is crucial in high-frequency applications where inductive reactance can interfere with performance.
  2. Extended Foil Construction: This feature ensures a more robust connection and better performance. The extended foil provides a larger surface area for the electrodes, enhancing the capacitor’s ability to handle higher currents and improve overall efficiency.
  3. Dip Coated: The dip coating process involves submerging the capacitor in an insulating material, which helps in creating a uniform protective layer. This enhances the durability and stability of the capacitor, making it resistant to various environmental factors.
  4. High Moisture Resistance: Moisture can significantly impact the performance of capacitors. The JFB series is designed with high moisture resistance, ensuring reliable performance even in humid conditions. This makes them ideal for use in environments where moisture levels are a concern.
  5. Epoxy Resin Coating: The capacitors are coated with epoxy resin, providing superior resistance to heat, humidity, and solvents. This robust coating protects the internal components and extends the lifespan of the capacitor, making it suitable for use in harsh environments.

Applications and Usage

The versatile nature of the JFB series makes it suitable for a wide range of applications. Here are a few examples:

  • Filtering: In power supply circuits, capacitors are often used to filter out unwanted noise and smooth the output voltage. The high stability and reliability of the JFB capacitors make them ideal for this purpose.
  • DC Blocking and Coupling: Capacitors can block direct current (DC) while allowing alternating current (AC) to pass through. The JFB series excels in coupling applications where it is essential to isolate different stages of a circuit without passing DC components.
  • General Communication Equipment: Reliable capacitors are crucial in communication devices to ensure stable and clear signal transmission. The JFB capacitors’ non-inductive nature and high moisture resistance make them perfect for this use.

Technical Specifications

For detailed technical information, you can refer to the JFB Metallized Polyester Film Capacitor datasheet. This document provides comprehensive specifications, including voltage ratings, capacitance ranges, and physical dimensions, allowing you to select the perfect capacitor for your specific needs.

Get in Touch

If you have any requirements or need further assistance in selecting the right capacitor for your application, feel free to drop us a message. Our team of experts is always ready to help you find the perfect solution for your electronic needs. Whether you are designing a new circuit or need to replace a component, the JFB series from jb Capacitors offers the reliability and performance you can count on.

Contact Email: info@jbcapacitors.com


By choosing the JFB Metallized Polyester Film Capacitor, you are investing in a high-quality component that guarantees longevity and optimal performance across a range of applications. Don’t hesitate to reach out to us for any queries or assistance.