B-4

Overview

The KEMET B-4 is a ferrite bead component designed for signal line applications. It provides impedance characteristics of 400 Ohms at a frequency of 500 MHz. The device supports a nominal current rating of 1.5 Amperes. Physical construction includes axial and radial bend lead configurations suitable for through-hole mounting.

Feature Summary

• Provides high impedance to suppress electromagnetic interference in signal lines
• Supports continuous current handling up to 1.5 Amperes
• Available in axial and radial bend lead forms for flexible board layout

Applications

• Signal line noise suppression
• Electromagnetic interference filtering
• High-frequency circuit protection

Procurement Notes

Verify the specific impedance value and current rating against the official KEMET datasheet before procurement. Confirm that the axial or radial bend package style matches the target PCB footprint requirements. Ensure the selected variant meets the required operating temperature range for the intended application environment.

Selection Notes

Select this component when signal integrity requires attenuation of high-frequency noise around 500 MHz. The 1.5A current rating determines suitability for power-coupled signal lines. Choose between axial and radial bend leads based on mechanical stress relief needs and available board space constraints.

Part Context

This ferrite bead belongs to KEMET's passive component portfolio focused on EMI suppression. Ferrite beads function as frequency-dependent resistors, dissipating high-frequency energy as heat while allowing DC or low-frequency signals to pass with minimal loss.

Replacement Considerations

Consult manufacturer cross-reference lists for verified substitutes. Ensure replacement parts match the 400 Ohm @ 500 MHz impedance curve and 1.5A current capacity.