BLM21AG121BH1D

Chip Ferrite Bead Overview

The Murata BLM21AG121BH1D is a single-line ferrite chip bead in an 0805 (2012 metric) surface-mount package. It provides an impedance of 120 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 1 Ampere and features a maximum DC resistance of 90 milliohms. It operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-impedance attenuation for electromagnetic interference suppression in signal lines
• Designed for surface-mount assembly using standard SMD/SMT termination types
• Constructed from ferrite material to absorb high-frequency noise energy

Chip Ferrite Bead Applications

• EMI suppression filters for general electronic circuits
• Signal line noise filtering in portable devices
• Power supply input/output decoupling

Chip Ferrite Bead Procurement Notes

Verify the specific suffix BH1D against official Murata documentation to confirm exact packaging and tape-and-reel specifications. Ensure the selected variant matches the required impedance tolerance and current rating for the target application circuit design.

Chip Ferrite Bead Selection Notes

Select this component when a 120 Ohm impedance at 100 MHz is required for signal integrity. The 1A current rating suits moderate power applications, while the 0805 footprint allows for compact PCB layouts. Verify thermal performance limits against operating conditions.

Chip Ferrite Bead Part Context

This part belongs to the BLM21AG series of ferrite beads manufactured by Murata Electronics. The series offers various impedance values within the 0805 package size, catering to diverse EMI suppression needs across consumer and industrial electronics markets.

Chip Ferrite Bead Replacement Considerations

Consult Murata's official cross-reference tools or datasheets for verified substitutes. Generic equivalents may differ in impedance characteristics or current handling capabilities.