BLM15AG221SN1D

Chip Ferrite Bead Overview

The Murata BLM15AG221SN1D is a surface-mount ferrite chip bead from the EMIFIL BLM15_SN series, designed for EMI suppression in compact circuits. It features an impedance of 220 Ohms at 100 MHz with a maximum DC resistance of 290 mOhms and a rated current of 450 mA. The component utilizes a 0402 (1005 metric) package measuring 1.0 mm in length, 0.5 mm in width, and 0.5 mm in height. It operates within a temperature range of -55°C to +125°C and complies with RoHS and REACH standards.

Chip Ferrite Bead Feature Summary

• Provides effective electromagnetic interference filtering for high-speed signal lines
• Enables space-saving integration through a compact 0402 surface-mount footprint
• Maintains low DC resistance to minimize power loss in signal paths

Chip Ferrite Bead Applications

• EMI suppression filters for general electronic equipment
• Noise filtering on high-speed signal lines
• Power supply line noise reduction in portable devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation to confirm packaging type and performance grade. Ensure the ordering code matches the required impedance tolerance and current rating. Confirm compliance requirements such as RoHS and REACH status directly from the manufacturer datasheet before procurement.

Chip Ferrite Bead Selection Notes

Select this component when circuit board real estate is limited to the 0402 size while requiring 220 Ohms attenuation at 100 MHz. Evaluate the 450 mA current rating against the maximum expected signal or power line current to prevent saturation. Consider the 290 mOhms DC resistance impact on voltage drop in sensitive applications.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM15_SN series of monolithic ferrite beads. The series offers various impedance values and current ratings within the 0402 package format. It is distinct from higher-current variants like the BLM15BB series or automotive-qualified parts within the broader BLM family.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other manufacturers' 0402 ferrite beads with identical 220 Ohm @ 100 MHz impedance and comparable current handling capabilities. Verify physical dimensions and terminal configurations to ensure compatibility with existing footprints.