B-20L-34

Overview

The KEMET B-20L-34 is a solid, free-hanging ferrite cable core designed for EMI suppression. It features Ni-Zn ferromagnetic material with an internal diameter of 0.8mm (0.031 inches), an outside diameter of 3.4mm (0.133 inches), and a length of 4.4mm (0.173 inches). The component operates effectively up to a maximum frequency of 300 MHz within a temperature range of -25°C to +85°C.

Feature Summary

• Solid construction provides mechanical stability for free-hanging installation on cables.
• Ni-Zn ferrite material offers effective high-frequency noise attenuation.
• Compact dimensions allow integration into space-constrained wiring assemblies.

Applications

• Suppression of electromagnetic interference on signal and power cables
• Common mode noise reduction in electronic equipment wiring
• EMI filtering in consumer electronics harnesses

Procurement Notes

Verify the specific part number against official KEMET documentation to confirm material composition and dimensional tolerances. Ensure the selected component meets the required operating temperature range of -25°C to +85°C for your application environment. Cross-reference datasheet specifications for frequency response characteristics to validate performance at target frequencies.

Selection Notes

Select this component based on the cable diameter requirement, as the 0.8mm inner diameter limits compatible wire sizes. Consider the 300 MHz maximum frequency capability when evaluating noise spectra. The free-hanging mount style requires adequate clearance around the cable assembly. Verify that the Ni-Zn material properties align with the specific impedance requirements of the targeted interference frequencies.

Part Context

This component belongs to the KEMET Cable Ferrites series, which includes various solid and split-core magnetic beads. These components are engineered for passive EMI suppression without requiring active circuitry. The B-20L-34 specifically utilizes a solid design for durability compared to split-core alternatives, making it suitable for permanent installations where disassembly is not anticipated.

FAQ

What is the maximum operating frequency for the B-20L-34?

The component is rated for a maximum frequency of 300 MHz.

Is the B-20L-34 a split-core or solid design?

It is a solid, non-split ferrite core designed for free-hanging installation.