4211R-20

Overview

The Delevan 4211R-20 is an axial leaded ferrite bead designed for EMI and RFI suppression. It exhibits an impedance of 163 Ohms at a test frequency of 100 MHz. The component features a single-line configuration with axial termination style, suitable for through-hole mounting on printed circuit boards. Physical dimensions include a length of approximately 0.545 inches (13.8 mm) and a diameter of 3.51 mm. This device serves as a passive filter to attenuate high-frequency noise in electronic circuits.

Feature Summary

• Provides effective attenuation of electromagnetic interference (EMI) and radio frequency interference (RFI) signals.
• Utilizes axial leaded construction for reliable through-hole integration into PCB layouts.
• Engineered with ferrite core material to suppress high-frequency noise across specified bandwidths.

Applications

• High-frequency noise suppression in signal lines
• EMI filtering in communication equipment
• RFI mitigation in sensitive analog circuits

Procurement Notes

Verify the specific impedance value and tolerance against the manufacturer's official datasheet prior to procurement, as values may vary by revision. Confirm that the axial package dimensions are compatible with the target PCB footprint. Ensure the component meets required environmental operating temperatures and current ratings for the intended application environment.

Selection Notes

Select this component when axial mounting is preferred over surface-mount alternatives for ferrite beads. Consider the 163 Ohm impedance at 100 MHz to ensure adequate noise attenuation for the specific frequency spectrum of interest. Verify that the physical size fits within the available board space and that the lead spacing matches the design requirements.

Part Context

The 4211R series represents Delevan's line of axial ferrite beads. These components are part of a broader family of passive filters used for signal integrity management. The 4211R-20 specifically denotes a variant within this series characterized by its particular impedance rating and axial form factor, distinguishing it from surface-mount or different impedance variants in the product catalog.

Replacement Considerations

Cross-reference with other axial ferrite beads offering similar 163 Ohm impedance at 100 MHz. Ensure substitute parts match the physical dimensions and lead configuration for direct replacement without PCB modification.

FAQ

What is the test frequency for the 163 Ohm impedance specification?

The impedance of 163 Ohms is measured at a test frequency of 100 MHz.

Is the 4211R-20 shielded?

The 4211R-20 is an axial ferrite bead and does not feature a magnetic shield structure typical of surface-mount shield beads; it relies on the ferrite material properties for suppression.