HJC 474 0.4µF K 250V to 275V Safety Capacitor

Wiring Connections:

• Radial Type: Connects directly to a printed circuit board (PCB) with leads extending out from both ends.
• Axial Type: Connects with leads extending from both ends, allowing for flexible positioning in the circuit.

Power:

• Maximum Voltage: Rated for operation up to 275V AC, making it suitable for standard mains voltage applications.
• Power Rating: Designed for low power dissipation,  used for signal filtering or decoupling in electronic circuits.

Input and Output:

• Input: Connects to the AC mains or other high-voltage sources as required by the application.
• Output: Provides filtered or decoupled signal output, depending on the circuit configuration.

Physical Characteristics:

• Dimensions: Varies based on the package type (e.g., radial or axial).  small and compact, suitable for use in dense PCB layouts.
• Lead Configuration:
  • Radial: Two leads extending from one end of the capacitor.
  • Axial: Two leads extending from opposite ends of the capacitor.
• Package Size: Usually compact, with the exact dimensions dependent on the manufacturer and specific product variant.

Technical Specifications:

• Capacitance Value: 0.4µF, providing effective filtering or decoupling in a wide range of electronic circuits.
• Voltage Rating: Operates safely up to 275V AC, suitable for high-voltage applications.
• Tolerance: ±10%, indicating the allowable deviation from the nominal capacitance value.
• Insulation Resistance:  high, ensuring minimal leakage current and reliable performance.

Additional Features:

• Compliance with Safety Standards: Meets international safety standards for capacitors used in mains-powered equipment. Ensures reliability and safety in electrical applications.
• Durability: Built to withstand high-voltage conditions and provide long-term stability in electronic circuits.
• High Dielectric Strength: Capable of withstanding high voltage without breakdown, making it suitable for use in demanding applications.

How to Use:

1. Circuit Filtering:
   • Placement: Place the HJC 474 capacitor across the power lines or near the load to filter out noise and smoothen voltage fluctuations.
   • Connection: For radial capacitors, connect the leads to the PCB in the appropriate holes. For axial capacitors, insert the leads into the PCB from either end.
2. Decoupling:
   • Function: Use the capacitor to decouple AC noise from DC signals in circuits. Connect it between the power supply and ground to reduce noise and improve signal integrity.
   • Installation: Ensure the capacitor is placed as close as possible to the components it is meant to decouple to maximize its effectiveness.
3. Safety Applications:
   • Installation: Mount the capacitor in line with the mains power supply to provide safety filtering and prevent potential hazards.
   • Verification: Regularly inspect the capacitor to ensure it is functioning correctly and replace it if signs of damage or degradation are observed.
4. High-Voltage Applications:
   • Usage: Suitable for use in applications where high-voltage AC signals are present. Ensure the capacitor’s voltage rating exceeds the maximum expected voltage in the circuit.
   • Handling: Handle with care to avoid damage, and ensure proper insulation and safety measures are in place.
5. Temperature Considerations:
   • Operating Environment: Ensure the capacitor is used within its specified temperature range to maintain reliable performance. Avoid exposure to temperatures exceeding the maximum rating.

The HJC 474 Safety Capacitor is a reliable and versatile component designed for use in high-voltage AC applications. With a capacitance of 0.4µF and a voltage rating of 250V to 275V, it is ideal for filtering and decoupling in electronic circuits. Its compliance with safety standards ensures that it can be used safely in mains-powered equipment. The capacitor’s stable performance, high voltage rating, and compact size make it suitable for a wide range of applications, from signal filtering to safety applications in electrical systems.