BLM15BC121SN1D

Chip Ferrite Bead Overview

The Murata BLM15BC121SN1D is a single-line ferrite chip bead in the EMIFIL BLM15 series, housed in a 0402 (1005 metric) SMD 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 350 mA and exhibits a maximum DC resistance of 170 mOhms. It operates within a temperature range of -55°C to +125°C and measures 1.0 mm x 0.5 mm x 0.5 mm.

Chip Ferrite Bead Feature Summary

• Designed for high-frequency noise suppression on signal lines without requiring a ground connection.
• Features a nickel barrier layer on external electrodes to ensure excellent soldering heat resistance.
• Minimizes resonance probability to prevent signal distortion in GHz band applications.

Chip Ferrite Bead Applications

• EMI suppression in notebook PCs and digital still cameras
• Noise suppression for data transmission lines
• Prevention of errors caused by local oscillator signals in mobile phones

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging configuration and compliance status. Ensure the selected variant matches the required impedance tolerance and current rating for the target circuit design before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component for compact signal line filtering where space is limited. The 0402 footprint suits dense PCB layouts. Confirm that the 350 mA current rating meets the operational requirements of the protected line to avoid saturation or excessive heating during normal operation.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM15 series of multi-layer ferrite beads. These components are engineered for suppressing electromagnetic interference in high-speed digital circuits. The series offers various impedance values within the standard 0402 package size to accommodate different filtering needs.

Chip Ferrite Bead Replacement Considerations

Consult the official Murata alternate sizing guide for verified substitutes. Cross-reference impedance, current rating, and package dimensions when evaluating alternative parts from other manufacturers to ensure functional compatibility.

Chip Ferrite Bead FAQ

Does the BLM15BC121SN1D require a ground connection?

No, this device is designed for use in circuits without stable grounds as it does not require a ground connection for effective noise suppression.

What is the maximum operating temperature?

The maximum operating temperature for this ferrite bead is +125°C.