BLM18RK221SN1D

Chip Ferrite Bead Overview

The Murata BLM18RK221SN1D is a single-line ferrite chip bead in the EMIFIL BLM18 series, housed in a 0603 (1608 metric) SMD package measuring 1.6 mm x 0.8 mm x 0.8 mm. It provides an impedance of 220 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 2.2 A and features a maximum DC resistance of 50 mOhms. It operates within a temperature range of -55°C to +125°C and complies with RoHS3 standards.

Chip Ferrite Bead Feature Summary

• Provides high-impedance attenuation for high-frequency noise suppression in electronic circuits
• Designed for surface-mount assembly on power supply lines
• Monolithic construction ensures reliability under specified thermal conditions

Chip Ferrite Bead Applications

• Power supply line filtering
• EMI suppression filters
• High-frequency noise reduction in compact electronics

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging type and tape specifications. Ensure the procurement channel sources genuine components from authorized distributors to guarantee compliance with RoHS3 regulations and prevent counterfeit parts. Cross-reference the manufacturer part number with the datasheet to validate electrical parameters before integration into production schedules.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required with a 2.2 A current rating. The 220 Ohm impedance at 100 MHz targets specific noise frequencies. Compare against the BLM18PG variant if lower current handling is acceptable, or consider larger packages like BLM21 if higher current capacity is necessary. Verify that the low DC resistance meets voltage drop requirements in the target circuit design.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM18 series of ferrite beads. It is a passive filter element designed to suppress electromagnetic interference. The series offers various impedance and current ratings within the standard 0603 package size, allowing designers to balance space constraints with noise filtering performance requirements.

Chip Ferrite Bead Replacement Considerations

BLM18KG221SN1D: Higher current rating (2.2A vs 2.2A), similar impedance. BLM18PG221SN1D: Lower current rating (1.4A). BLM18AG221SN1D: Lower current rating (500mA). Verify current handling capabilities during substitution.