BLM21HE122SN1L

Chip Ferrite Bead Overview

The Murata BLM21HE122SN1L is a single-line ferrite chip bead in an 0805 (2012 metric) surface-mount package. It provides 1200 Ohms impedance at 100 MHz with a 25% tolerance. The component supports a maximum DC current of 1.6 Amperes and has a maximum DC resistance of 110 milliohms. It operates within a temperature range of -55°C to +125°C, featuring dimensions of 2.0 mm length, 1.25 mm width, and 0.85 mm height.

Chip Ferrite Bead Feature Summary

• Provides high-frequency noise suppression through significant impedance characteristics at 100 MHz.
• Designed for surface-mount assembly using standard SMD/SMT termination types.
• Capable of handling substantial direct current loads up to 1.6 Amperes.

Chip Ferrite Bead Applications

• EMI suppression filters
• Power supply circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1L against official Murata documentation to confirm packaging details such as reel or cut tape specifications. 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 when designing for high-current applications requiring effective high-frequency attenuation in a compact 0805 footprint. Consider the low DC resistance to minimize voltage drop and power loss in power lines while maintaining necessary EMI filtering performance.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM21 series of EMIFIL ferrite beads. The series offers various impedance and current ratings within the 0805 package, allowing designers to choose components that balance noise suppression capabilities with electrical load requirements for different electronic systems.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative manufacturers by matching impedance values, current ratings, and physical dimensions.

Chip Ferrite Bead FAQ

What is the operating temperature range for the BLM21HE122SN1L?

The component operates effectively within a temperature range of -55°C to +125°C.

Does this ferrite bead support high DC current loads?

Yes, it is rated for a maximum DC current of 1.6 Amperes.