BLM21BD751SN1D

Chip Ferrite Bead Overview

The Murata BLM21BD751SN1D is a single-line ferrite bead designed for signal line noise suppression in surface-mount applications. It operates within a temperature range of -55°C to +125°C and features a 0805 (2012 metric) package with dimensions of 2.00mm x 1.25mm x 1.45mm maximum height. The component provides an impedance of 750 Ohms at 100 MHz, supports a maximum DC current of 250mA, and has a maximum DC resistance of 400 milliohms.

Chip Ferrite Bead Feature Summary

• Provides high-impedance attenuation for high-frequency noise on single signal lines
• Functions as a resistor at noise frequencies to minimize resonance risks
• Maintains signal waveform integrity during operation

Chip Ferrite Bead Applications

• Noise filtering for audio signal lines
• Suppression in remote control circuits for lighting or other applications
• Neutralization circuits in radio IF amplifiers

Chip Ferrite Bead Procurement Notes

Verify the complete part number including suffixes such as SN1D against official manufacturer datasheets to ensure correct impedance and packaging specifications. Confirm RoHS3 compliance and moisture sensitivity level requirements prior to integration into production workflows.

Chip Ferrite Bead Selection Notes

Select this component when specific 750 Ohm impedance at 100 MHz is required for signal integrity. Ensure the PCB layout accommodates the 0805 footprint and that the circuit current remains below the 250mA rating to prevent excessive heating or performance degradation.

Chip Ferrite Bead Part Context

This device belongs to the Murata EMIFIL BLM21 series of chip ferrite beads. The series is engineered to suppress electromagnetic interference in compact electronic designs while preserving signal quality through resistive behavior at target noise frequencies.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative components by matching impedance curves, current ratings, and physical dimensions.