BLA31BD471SN4D

Chip Ferrite Bead Overview

The BLA31BD471SN4D is a ferrite chip bead array manufactured by Murata Electronics, designed for surface-mount technology in the 1206 (3216 metric) package. It features four signal lines with an impedance of 470 Ohms at a test frequency of 100 MHz and a tolerance of 25%. The component supports a maximum DC current of 100 mA and has a maximum DC resistance of 400 mOhms. It operates within a temperature range of -55°C to +125°C and complies with RoHS standards.

Chip Ferrite Bead Feature Summary

• Provides multi-line noise suppression through a quad-channel ferrite array configuration
• Offers high-impedance attenuation for signal integrity management at specified frequencies
• Supports compact surface-mount integration via standard 1206 footprint dimensions

Chip Ferrite Bead Applications

• Noise filtering for multiple digital signal lines
• EMI suppression in portable electronic devices
• Signal conditioning in general-purpose circuit boards

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN4D against official Murata documentation to confirm pinout and electrical characteristics. Ensure the procurement channel provides valid traceability for RoHS compliance. Cross-reference the 1206 package dimensions with PCB layout requirements before ordering. Confirm availability of cut tape or reel options based on assembly needs.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring simultaneous noise suppression across four distinct signal paths. The 1206 package offers a balance between current handling capacity and board space efficiency. Consider the 100 mA current rating to ensure the component does not saturate under normal operating conditions. Verify that the 470 Ohm impedance profile matches the target noise frequency spectrum.

Chip Ferrite Bead Part Context

This part belongs to the EMIFIL BLA31 series of ferrite bead arrays from Murata Electronics. The series is engineered for high-density applications where multiple signal lines require filtering in a minimal footprint. The BLA31BD variant specifically denotes the 1206 case size and quad-line architecture suitable for modern compact electronics.

Chip Ferrite Bead Replacement Considerations

Consult Murata's official substitution guide for equivalent parts within the BLA31 series. Verify that any alternative maintains the same 1206 footprint and 470 Ohm impedance specification. Ensure the replacement component meets the required 100 mA current rating and thermal performance limits.