FB43-287

Overview

The Bourns FB43-287 is a solid free-hanging ferrite core designed for EMI suppression. It features a cylindrical geometry with an inner diameter of 2.64mm and an outer diameter of 7.89mm. The component has a length of 7.92mm and utilizes material grade 43. It provides impedance characteristics effective within the frequency range of 40MHz to 200MHz, serving as a passive filter for cable noise reduction.

Feature Summary

• Solid cylindrical construction for direct wire insertion
• Utilizes magnetic material grade 43 for specific frequency attenuation
• Free-hanging mounting style suitable for loose cable applications

Applications

• Suppression of electromagnetic interference on signal cables
• Noise filtering in high-frequency data transmission lines
• Common mode noise reduction on power cords

Procurement Notes

Verify the exact physical dimensions against your cable specifications before procurement. Confirm that the material grade 43 aligns with your required frequency response profile. Ensure the free-hanging design fits your assembly constraints without additional hardware. Cross-reference the part number suffix if lead-free or specific packaging requirements are necessary for your production line.

Selection Notes

Select this component when a simple, low-profile ferrite solution is required for cables up to 2.64mm in diameter. Consider the material grade 43 properties for frequencies between 40MHz and 200MHz. Evaluate the mechanical stability of the solid core design for your specific vibration environment. Compare alternative grades if higher impedance at different frequencies is needed.

Part Context

This part belongs to the FB43 series of ferrite cores from Bourns Inc., which offers various sizes and material grades. The FB43 designation typically indicates the material composition and general form factor. These components are widely used in consumer electronics and industrial equipment for basic EMI mitigation tasks where discrete filtering is preferred over integrated solutions.

Replacement Considerations

Check for equivalent parts from other manufacturers offering similar dimensions and material grade 43. Verify that substitute cores maintain the same inner diameter tolerance to ensure proper fit on the target cable. Confirm that the replacement part meets the same RoHS compliance standards if required by your supply chain policies.