2643002201

Overview

Fair-Rite 2643002201 is a solid round ferrite cable core utilizing Material 43 for EMI suppression. It features an inner diameter of 1.09 mm and an outer diameter of 3.5 mm, with an external length of 10.41 mm. The component provides a guaranteed minimum impedance of 58 ohms at a test frequency of 100 MHz. Designed as a free-hanging shield bead, it operates effectively within the 25 MHz to 300 MHz frequency range.

Feature Summary

• Solid round construction designed for direct clamping onto cables without additional mounting hardware
• Material 43 composition optimized for high-frequency noise attenuation in the VHF/UHF spectrum
• Guaranteed minimum impedance specification ensures consistent electromagnetic interference suppression performance

Applications

• Suppression of common-mode noise on small-diameter signal and power cables
• EMI mitigation on USB, HDMI, and other high-speed data interfaces
• Noise filtering on internal wiring within electronic enclosures

Procurement Notes

Verify that the target cable diameter falls within the 1.09 mm inner diameter tolerance to ensure proper fit. Confirm that the application frequency aligns with the Material 43 effective range. Check datasheet specifications for impedance guarantees at specific frequencies rather than relying on generic material properties.

Selection Notes

Select this part when dealing with cables under 1.1 mm diameter requiring compact EMI solutions. Material 43 is preferred over Material 31 for higher frequency applications above 50 MHz. Ensure physical clearance allows for the 10.41 mm length and 3.5 mm outer diameter footprint.

Part Context

This component belongs to Fair-Rite’s 26 series of solid ferrite beads. These cores are distinct from split or snap-on types due to their continuous cylindrical geometry. They are widely used in consumer electronics and industrial equipment for passive noise control where space constraints limit larger core options.

Replacement Considerations

Direct substitutes include Fair-Rite 2643000101 (40 ohms @ 100 MHz) for lower impedance requirements, or 2643002301 if slightly different dimensional tolerances are acceptable. Verify impedance curves match specific noise frequencies before swapping.