4211R-21

Overview

The Delevan 4211R-21 is an axial leaded ferrite bead designed for EMI and RFI suppression. It exhibits an impedance of 61 Ohms at a test frequency of 100 MHz. The component features a cylindrical body with a diameter of 3.5 mm and a length of approximately 0.45 inches (11.43 mm). It utilizes standard axial terminations for through-hole mounting on printed circuit boards.

Feature Summary

• Provides effective attenuation of high-frequency electromagnetic interference signals
• Utilizes wound ferrite core construction for stable noise suppression characteristics
• Features axial leads suitable for reliable through-hole PCB integration

Applications

• High-frequency signal line filtering in electronic circuits
• Power supply input/output noise suppression
• Data bus protection against radio frequency interference

Procurement Notes

Verify the specific impedance tolerance and DC current rating requirements against the official datasheet before ordering. Confirm that the axial lead spacing matches the target PCB footprint design. Ensure compliance with relevant environmental regulations such as RoHS standards applicable to your region. Check for any obsolescence notices or lifecycle status updates from the manufacturer prior to finalizing procurement plans.

Selection Notes

Select this component when a moderate impedance value of 61 Ohms is required for broadband noise reduction. Consider the physical dimensions and axial lead configuration for mechanical stability in through-hole assemblies. Evaluate the operating temperature range to ensure performance consistency under expected thermal conditions. Compare alternative ferrite materials if higher saturation current or different frequency response characteristics are needed.

Part Context

This part belongs to the Delevan 4211R series of ferrite beads on leads. The series offers various impedance values tailored for different filtering needs. These components are manufactured by API Delevan, a provider of passive magnetic components. The 4211R series is characterized by its wound bead construction and axial termination style.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs by matching impedance curves and physical dimensions. Consult the manufacturer for potential end-of-life alternatives if this specific model is discontinued.