Polyester Capacitor 4.7nf 2kv (472)

Key Specifications

1. Capacitance:
   • 4.7nF (nanofarads): This is equivalent to 0.0047 µF (microfarads) or 4700 pF (picofarads).
2. Voltage Rating:
   • 2kV (2000V): This parameter indicates the maximum voltage the capacitor can safely withstand. It’s essential for ensuring reliability in high-voltage applications.
3. Type:
   • Polyester Capacitor: These capacitors use a polyester film as the dielectric material, known for having good electrical properties, stability, and affordability.
4. Marking:
   • 472:
     • The first two digits (47) are significant figures.
     • The third digit (2) represents the number of zeros to add, indicating the capacitance is (47 \times 10^2) pF, which results in (4700) pF or (4.7) nF.

Features

• High Voltage: With a voltage rating of 2kV, these capacitors are suitable for applications where high peak voltages are encountered.
• Non-Polarized: Like most polyester capacitors, they are non-polarized, allowing them to be connected in either direction in a circuit.
• Durability: Polyester capacitors are known for good longevity and resistance to environmental factors.
• Capacitance Stability: Generally stable over temperature variations, but check the specific characteristics as they may vary by manufacturer.

Applications

Polyester capacitors rated at 4.7nF and 2kV are often used in a variety of high-voltage and general applications, including:

1. Power Supply Filtering: Suitable for use in high-voltage power supplies to filter noise and stabilize voltage.
2. Snubber Circuits: Commonly found in snubber circuits designed to protect other components (like transistors and relays) from voltage spikes.
3. Coupling Capacitors: Used in coupling applications, particularly in high-frequency environments.
4. High-Voltage Applications: Ideal for applications in electrical equipment that requires high decoding reliability.
5. Radio Frequency Applications: Utilized in RF circuits for filtering and coupling in transmitters and receivers.

Considerations When Selecting

1. Voltage Rating: Ensure that the 2kV rating is suitable for the application to prevent breakdown and failure.
2. Capacitance Value: Verify that 4.7nF is the appropriate value for your specific circuit requirements.
3. Tolerance: Check the tolerance specification (if available), as this will affect performance in precision applications.
4. Temperature Range: Verify that the capacitor can operate effectively within the required temperature range for your application.
5. Physical Size: Ensure the physical dimensions of the capacitor fit your PCB and layout requirements.