2873006802

Overview

Fair-Rite 2873006802 is a solid cylindrical ferrite core manufactured from Material 43. It features an inner diameter of 3.8 mm, an outer diameter of 7.5 mm, and a length of 13.3 mm. The component provides an impedance of 142 Ohms at 25 MHz and 300 Ohms at 100 MHz. Designed for free-hanging installation, it operates effectively within the 20 MHz to 300 MHz frequency range. The unit weighs approximately 7 grams and is supplied in bulk packaging.

Feature Summary

• Solid cylindrical construction made from Material 43 for high-frequency noise suppression
• Multi-aperture design capability allowing multiple cable passes through the central bore
• Impedance-controlled performance optimized for the 20 MHz to 300 MHz spectrum

Applications

• Common mode choke applications for data and communication cables
• EMI suppression on high-speed signal lines
• RFI filtering for electronic equipment harnesses

Procurement Notes

Verify the specific impedance requirement against the application frequency. Material 43 cores are controlled for impedance only. Confirm that the 3.8 mm inner diameter accommodates the target cable bundle. Ensure the solid cylindrical form factor meets the mechanical constraints of the assembly. Check RoHS compliance status if required by the end product specifications.

Selection Notes

Select this part when a compact, solid ferrite ring is needed for frequencies above 20 MHz. Material 43 offers higher permeability suitable for lower frequency noise compared to Materials 31 or 61. The 3.8 mm bore size limits usage to smaller gauge wires or multi-conductor cables. Consider the 142 Ohm impedance at 25 MHz as the primary specification point for low-frequency EMI tasks.

Part Context

This component belongs to Fair-Rite's standard line of ferrite toroids and rings. It utilizes the proprietary Material 43 formulation, which is widely recognized for its magnetic properties in the VHF and UHF ranges. The 28 series designation indicates its physical dimensions and shape family within the manufacturer's catalog.

Replacement Considerations

Direct substitutes include other Material 43 cores with identical or compatible dimensions, such as Fair-Rite 2843006802. Verify that any alternative maintains the same 3.8 mm ID and 7.5 mm OD to ensure fitment.