BLA31BD121SN4D

Chip Ferrite Bead Overview

The BLA31BD121SN4D is a ferrite chip bead array manufactured by Murata Electronics, designed for surface-mount technology in the 1206 (3216 metric) package. It provides an impedance of 120 Ohms with a tolerance of 25% at a test frequency of 100 MHz. The component supports a maximum DC current of 150 mA and exhibits a maximum DC resistance of 300 mOhms. It operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-speed signal filtering through integrated ferrite bead arrays
• Designed for surface-mount assembly in compact 1206 footprints
• Capable of suppressing electromagnetic interference in sensitive circuits

Chip Ferrite Bead Applications

• High-speed digital signal line protection
• Power supply noise suppression
• Electromagnetic interference filtering in consumer electronics

Chip Ferrite Bead Procurement Notes

Verify the specific impedance value and current rating against the official Murata datasheet before integration. Confirm that the 1206 package dimensions align with the target PCB footprint. Ensure the operating temperature range meets the environmental requirements of the final application. Cross-reference the manufacturer part number to avoid confusion with similar series components.

Chip Ferrite Bead Selection Notes

Select this component when a low-profile ferrite array is required for high-speed data lines. The 120 Ohm impedance offers effective attenuation for common noise frequencies. The 150 mA current rating suits moderate power applications. Consider the 300 mOhm DC resistance for minimal voltage drop impact on the circuit.

Chip Ferrite Bead Part Context

This part belongs to the BLA series of ferrite chip bead arrays from Murata Electronics. These components are engineered for noise suppression in portable devices and industrial equipment. The BLA series typically features multiple channels in a single package to save board space compared to discrete beads.

Chip Ferrite Bead Replacement Considerations

Check for direct substitutes within the Murata BLA series with matching impedance and package size. Verify that alternative parts maintain the same current handling capabilities and thermal performance characteristics.