BLM21AG121SN1D

Chip Ferrite Bead Overview

The Murata BLM21AG121SN1D is a single-line chip ferrite bead in an 0805 (2012 metric) surface-mount package. It provides an impedance of 120 Ohms at 100 MHz with a maximum DC resistance of 100 milliohms and a rated current of 800 mA. The component operates within a temperature range of -55°C to +125°C, featuring dimensions of 2.00mm length, 1.25mm width, and 0.85mm height.

Chip Ferrite Bead Feature Summary

• Designed for suppressing high-frequency noise in general signal line applications
• Utilizes EMIFIL technology for effective electromagnetic interference mitigation
• Constructed as a single-line filter for compact circuit integration

Chip Ferrite Bead Applications

• General signal line noise suppression
• Electromagnetic interference filtering in electronic circuits

Chip Ferrite Bead Procurement Notes

Verify the specific part number suffix against official Murata documentation to confirm electrical characteristics. Datasheets may vary by region or revision; ensure the selected component matches the required impedance, current rating, and package dimensions for the target design.

Chip Ferrite Bead Selection Notes

Select this component for applications requiring moderate current handling in a standard 0805 footprint. Compare specifications against alternative series such as BLM21PG or BLM21BB if higher current capacity or different impedance profiles are necessary for the specific power or signal integrity requirements.

Chip Ferrite Bead Part Context

This component belongs to the Murata BLM21AG series, which consists of EMIFIL chip ferrite beads intended for high-frequency noise suppression. The series is characterized by its suitability for general signal lines, offering a balance of impedance performance and physical size for dense PCB layouts.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers were not identified in the provided source material.