B-20F-57

Overview

The KEMET B-20F-57 is a solid manganese zinc ferrite cable core designed for EMI suppression. It features a cylindrical geometry with an inner diameter of 1.5 mm, an outer diameter of 5.7 mm, and an external length of 8 mm. The component operates within a temperature range of -25 °C to +85 °C and is characterized at a frequency of 100 MHz.

Feature Summary

• Solid manganese zinc construction for effective high-frequency noise attenuation
• Cylindrical form factor engineered for direct sliding onto existing cables
• Optimized impedance characteristics for electromagnetic interference mitigation

Applications

• Electromagnetic interference filtering on signal and power lines
• Noise suppression in electronic equipment cabling
• Common mode choke applications for data transmission wires

Procurement Notes

Verify the specific ordering suffix against official KEMET documentation to ensure correct material composition and dimensional tolerances. Confirm RoHS compliance status through current manufacturer declarations. Cross-reference the Mouser number 80-B-20F-57 with the original datasheet to validate availability and technical specifications before finalizing procurement decisions.

Selection Notes

Select this component when a compact, non-shielded solution is required for suppressing high-frequency noise on cables with diameters up to 1.5 mm. The manganese zinc material offers higher permeability suitable for lower frequency ranges compared to nickel zinc alternatives. Ensure the operating environment remains within the specified thermal limits to maintain consistent magnetic properties.

Part Context

This part belongs to the B-20 series of ferrite cores manufactured by KEMET. The series provides various dimensions to accommodate different cable sizes. The B-20F-57 specifically addresses applications requiring a balance between physical size and noise suppression capability for standard wiring harnesses in consumer and industrial electronics.

Replacement Considerations

Consult official KEMET substitution guides for compatible alternatives. Verify that any substitute maintains identical inner diameter constraints and material permeability characteristics to ensure equivalent circuit performance.