BLM21PG221SN1D

Chip Ferrite Bead Overview

The Murata BLM21PG221SN1D is a single-line chip ferrite bead in an 0805 (2012 metric) surface-mount package. It provides 220 Ohms impedance at 100 MHz with a maximum DC resistance of 45 milliohms and a rated current of 2 Amperes. The component operates within a temperature range of -55°C to 125°C, features a nickel barrier electrode structure for solder heat resistance, and complies with RoHS3 standards.

Chip Ferrite Bead Feature Summary

• Functions as a resistor at noise frequencies to reduce resonance and preserve signal waveforms without requiring a ground connection.
• Nickel barrier external electrodes provide excellent resistance to soldering heat.
• Low DC resistance design supports high-current power line applications.

Chip Ferrite Bead Applications

• On-board EMI suppression filters
• Power supply noise filtering
• High-current circuit noise reduction

Chip Ferrite Bead Procurement Notes

Verify the complete part number including the suffix to ensure correct packaging configuration. Confirm that the required impedance tolerance and current rating align with the specific circuit design requirements before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component for designs requiring effective noise suppression in compact spaces where ground connections are unstable. The low DC resistance makes it suitable for power lines carrying up to 2 Amperes, ensuring minimal voltage drop while maintaining high-frequency attenuation capabilities.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM21 series, designed for on-board EMI suppression. It utilizes ferrite material properties to attenuate high-frequency noise effectively. The series is engineered for reliability in various electronic environments, offering consistent performance across the specified operating temperature range.

Chip Ferrite Bead Replacement Considerations

The Samsung Electro-Mechanics CIC21J221NE is documented as a parameter-equivalent substitute. Verify compatibility regarding current rating and physical dimensions when considering alternative sources.

Chip Ferrite Bead FAQ

Does the BLM21PG221SN1D require a ground connection?

No, the BLM series is effective in circuits without stable ground lines because it does not need a connection to ground.

What is the maximum DC current rating?

The component has a maximum rated current of 2 Amperes.