BLM21SP111SN1D

Chip Ferrite Bead Overview

The Murata BLM21SP111SN1D is a single-line ferrite chip bead in an 0805 (2012 metric) surface-mount package. It provides an impedance of 110 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 1.1 A and has a maximum DC resistance of 45 mOhms. It operates within a temperature range of -55°C to +125°C, with physical dimensions of 2.0 mm length, 1.25 mm width, and 0.85 mm height.

Chip Ferrite Bead Feature Summary

• Designed for power line filtering applications to suppress electromagnetic interference
• Utilizes EMIFIL technology for high-performance noise absorption
• Single-line configuration suitable for compact circuit layouts

Chip Ferrite Bead Applications

• Power supply noise suppression
• Electromagnetic interference (EMI) filtering
• High-speed signal line protection

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging and tape specifications. Ensure the selected variant matches the required impedance tolerance and current rating for the target application. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before procurement.

Chip Ferrite Bead Selection Notes

Select this component when a 110 Ohm impedance at 100 MHz is required for power lines carrying up to 1.1 A. The 0805 footprint allows for space-constrained designs. Verify that the 45 mOhms DC resistance meets the voltage drop requirements of the circuit. Confirm compatibility with standard reflow soldering profiles for surface-mount assembly.

Chip Ferrite Bead Part Context

This component belongs to the Murata BLM21 series of EMIFIL ferrite beads. The series offers various impedance values and current ratings in standardized 0805 packages. These components are engineered for general-purpose noise suppression in electronic circuits, providing reliable performance across industrial and consumer applications.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for verified alternatives. Ensure any replacement maintains the 0805 footprint, 110 Ohm impedance at 100 MHz, and 1.1 A current handling capability. Verify thermal and electrical compatibility before implementation.