7427005

Overview

The Würth Elektronik 7427005 is an axial ferrite bead from the WE-AFB series, designed for EMI suppression. It features a solid toroidal geometry with dimensions of 16.00 mm outer diameter, 9.00 mm inner diameter, and 28.00 mm length. The component operates within a frequency range up to 100 MHz and provides an impedance of 133 Ohms at 25 MHz. Its DC resistance is specified at a maximum of 705 Ohms. The part is RoHS compliant and lead-free, suitable for power management, industrial, portable, and consumer electronics applications.

Feature Summary

• Provides effective electromagnetic interference (EMI) suppression through high impedance characteristics in the radio frequency spectrum.
• Features a robust axial ferrite construction designed for direct cable mounting without additional hardware.
• Complies with RoHS standards and is manufactured without lead, ensuring environmental safety.

Applications

• Power management circuits requiring noise filtering
• Industrial equipment signal integrity protection
• Portable device cable shielding
• Consumer electronics EMI mitigation

Procurement Notes

Verify the specific impedance value of 133 Ohms at 25 MHz against design requirements. Confirm the physical dimensions of 16x9x28 mm fit the assembly space. Ensure the application environment does not exceed the thermal limits implied by the material specifications. Check for RoHS compliance documentation if required by regulatory standards. Validate that the DC resistance of 705 Ohms does not interfere with circuit operation.

Selection Notes

Select this component when axial ferrite beads are preferred over snap-on types for permanent installations. Consider the 133 Ohm impedance at 25 MHz for targeted noise frequencies. Evaluate the 705 Ohm DC resistance to ensure it does not cause excessive voltage drop in low-voltage lines. Compare the 16 mm outer diameter against available cable bundle sizes to ensure proper fit.

Part Context

This part belongs to the WE-AFB series of axial ferrite beads from Würth Elektronik. These components are engineered for general-purpose EMI suppression on cables and wires. The series offers various impedance values and dimensions to suit different frequency ranges and cable diameters, providing a standardized solution for noise reduction in electronic assemblies.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with existing designs before considering alternative manufacturers or series.