BLM21RK471SN1D

Chip Ferrite Bead Overview

The BLM21RK471SN1D is a single-line ferrite bead chip from Murata Electronics, designed for surface-mount assembly in the 0805 (2012 metric) package. It provides an impedance of 470 Ohms at 100 MHz with a maximum DC resistance of 250 milliohms and a rated current of 200 mA. The component operates within a temperature range of -55°C to 125°C and has a maximum height of 1.05 mm.

Chip Ferrite Bead Feature Summary

• Monolithic ferrite construction for effective high-frequency noise suppression
• Single-line configuration suitable for signal line filtering applications
• RoHS3 compliant and REACH unregulated environmental status

Chip Ferrite Bead Applications

• General electronic circuit noise filtering
• Signal line interference suppression
• Power supply decoupling in compact designs

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging type and terminal finish specifications. Ensure the selected variant matches the required impedance tolerance and current rating for the target application circuit design.

Chip Ferrite Bead Selection Notes

Select this component when a 0805 footprint is required with a 200 mA current limit. Compare against the BLM21BD series if higher current handling is necessary, as that variant supports 300 mA. Verify thermal management requirements given the low current rating.

Chip Ferrite Bead Part Context

This part belongs to the EMIFIL BLM21 series of ferrite beads. It shares the same physical dimensions and basic impedance characteristics with other variants in the family but differs in electrical ratings such as current capacity and DC resistance based on the internal material composition.

Chip Ferrite Bead Replacement Considerations

BLM21BD471SN1D offers similar impedance but supports 300 mA. BLM18KG471SN1D provides equivalent performance in a smaller 0603 package with 1.5 A capability.