BLM21BB121SH1D

Chip Ferrite Bead Overview

The Murata BLM21BB121SH1D is a single-line ferrite chip bead in the EMIFIL BLM21BB series, housed 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 600 mA and has a maximum DC resistance of 250 mOhms. It operates within a temperature range of -55°C to +125°C and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides high-frequency noise suppression through ferrite material characteristics
• Designed for surface-mount assembly on printed circuit boards
• Qualified for automotive applications under AEC-Q200 standards

Chip Ferrite Bead Applications

• Automotive electronic circuits requiring EMI suppression
• High-speed signal line filtering in consumer electronics
• Power supply output noise reduction

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SH1D against official Murata documentation to confirm packaging type and tape dimensions. Ensure the order matches the exact impedance value and current rating required by the design specifications. Confirm RoHS3 compliance status directly from the manufacturer datasheet before finalizing procurement.

Chip Ferrite Bead Selection Notes

Select this component when a 0805 footprint is required for space-constrained designs. The 600 mA current rating suits moderate power lines, while the 120 Ohm impedance targets specific noise frequencies. Verify that the thermal operating range covers the intended environment and that the low DC resistance minimizes voltage drop in the circuit path.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM21BB series of ferrite beads. The series offers various impedance values in the standard 0805 package size. These components are widely used for electromagnetic interference suppression in digital and analog circuits across industrial and automotive sectors.

Chip Ferrite Bead Replacement Considerations

Check Murata's official cross-reference lists for direct replacements. Ensure any substitute maintains the same 0805 footprint, 120 Ohm impedance at 100 MHz, and 600 mA current handling capability.