4211R-7

Overview

The Delevan 4211R-7 is an axial lead ferrite bead designed for EMI and RFI suppression in through-hole applications. It features a single-turn wound construction around a ferrite core, providing effective noise attenuation across high-frequency ranges. The component exhibits an impedance of 216 Ohms at a test frequency of 100 MHz. Its physical dimensions are compact, with a diameter of 3.5 mm and a length of 4.4 mm, facilitating integration into dense circuit layouts while maintaining robust signal integrity.

Feature Summary

• Provides effective electromagnetic interference (EMI) and radio frequency interference (RFI) suppression through ferrite material properties.
• Utilizes a single-turn wound bead design to minimize parasitic effects and maintain signal fidelity.
• Features axial leads for reliable through-hole mounting on printed circuit boards.

Applications

• High-speed digital signal line filtering
• Power supply input/output noise suppression
• Communication interface cable protection

Procurement Notes

Verify the specific impedance tolerance and DC resistance requirements against your circuit design before ordering. Confirm that the axial lead spacing matches your PCB footprint. Ensure the component meets RoHS compliance standards if required by your manufacturing process. Check for any specific handling instructions regarding thermal stress during soldering.

Selection Notes

Select this component when a low-profile, single-turn ferrite solution is needed for moderate noise suppression. The 216 Ohm impedance at 100 MHz makes it suitable for frequencies above typical switching noise. Consider the axial package constraints and ensure adequate clearance for the 4.4 mm length. Compare with higher impedance variants if stronger attenuation is required.

Part Context

This part belongs to the Delevan 4211R series of ferrite beads, which are characterized by their wound bead construction. These components are distinct from chip-style ferrites due to their through-hole compatibility and mechanical robustness. The series offers various impedance values to suit different frequency-specific filtering needs.

Replacement Considerations

Direct substitutes must match the 216 Ohm impedance at 100 MHz and axial 1-turn configuration. Verify physical dimensions (3.5mm x 4.4mm) for board space compatibility. Ensure equivalent current handling capabilities if used in power lines.

FAQ

What is the test frequency for the specified impedance?

The impedance of 216 Ohms is measured at a test frequency of 100 MHz.

How many turns does the winding have?

The 4211R-7 features a single-turn (1LN) wound bead design.