BF1835

Overview

The Delevan BF1835 is a split ferrite suppressor core designed for round cables. It features a hinged snap-on design for easy installation without disconnecting the cable. The component utilizes API-1 ferrite material to provide effective electromagnetic interference (EMI) and radio-frequency interference (RFI) suppression across a wide frequency range. Key physical dimensions include an inside diameter of 9 mm, an outside diameter of 18 mm, and a length of 35.00 mm. It offers an impedance of 172 Ohms at standard test frequencies.

Feature Summary

• Hinged snap-on design allows for installation on existing cables without disconnection
• Constructed from high-performance API-1 ferrite material for superior noise suppression
• Round shape optimized for cylindrical cable geometries
• Free-hanging mounting type suitable for various environmental conditions

Applications

• Suppression of electromagnetic interference in communication cables
• Noise reduction in power supply lines for electronic equipment
• Protection of data transmission cables against radio-frequency interference
• EMI filtering in industrial control systems and automotive wiring harnesses

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as BF1835-9 may exist with identical or slightly adjusted specifications. Confirm that the required inside diameter matches the target cable size of 9 mm to ensure a secure fit. Check for RoHS compliance requirements if operating in regulated markets. Ensure the API-1 material grade meets the intended frequency suppression needs. Review datasheets for impedance characteristics at relevant operating frequencies.

Selection Notes

Select this component when a non-invasive EMI solution is required for round cables up to 9 mm in diameter. The hinged design is critical for applications where cable disconnection is impractical or risky. Consider the 172 Ohm impedance rating to ensure adequate attenuation for the specific noise spectrum encountered. Evaluate the physical space constraints against the 35 mm length dimension. Compare alternative materials if higher temperature stability or different permeability is needed.

Part Context

Delevan manufactures a broad range of passive magnetic components, including inductors, chokes, and coils. The BF1835 belongs to their cable ferrite suppressor line, which focuses on compact and effective EMI mitigation. These components are often used alongside surface-mount inductors and shield beads to create comprehensive filtering solutions. The product line emphasizes high reliability and adherence to stringent quality specifications for government and commercial applications.

Replacement Considerations

Direct substitutes must match the 9 mm inside diameter, 18 mm outside diameter, and 35 mm length. Verify that replacement cores offer comparable impedance values and utilize similar ferrite material grades for equivalent performance. Hinged designs are necessary if field installation without cable cutting is required. Generic ferrite cores may lack the specific material properties of API-1 formulations.