BLM21PG221SZ1D

Chip Ferrite Bead Overview

The Murata BLM21PG221SZ1D is a single-line chip ferrite bead in the EMIFIL BLM21 series, housed in an 0805 (2012 metric) surface-mount package. It provides an impedance of 220 Ohms 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 and features a height of 0.041 inches (1.05 mm).

Chip Ferrite Bead Feature Summary

• Functions as a resistor at noise frequencies to reduce resonance and preserve signal waveforms.
• Operates effectively in circuits lacking stable ground lines without requiring a ground connection.
• Features nickel barrier external electrodes for excellent solder heat resistance.

Chip Ferrite Bead Applications

• On-board DC EMI suppression filters
• Power line filtering
• Noise suppression in high-current circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1D' against official Murata documentation to confirm exact packaging and tape specifications. Ensure the selected variant matches the required reel or cut-tape format for automated assembly processes. Cross-reference the full part number to distinguish it from similar BLM21PG models with different electrical tolerances or termination styles.

Chip Ferrite Bead Selection Notes

Select this component for applications requiring effective noise attenuation on power lines where space is limited to an 0805 footprint. The low DC resistance supports operation in circuits carrying up to 2 Amperes. Consider the AEC-Q200 qualification if automotive reliability standards are required for the design environment.

Chip Ferrite Bead Part Context

This component belongs to the Murata BLM21PG series of EMIFIL chip ferrite beads. These devices are designed for onboard EMI suppression, offering high impedance characteristics while maintaining low DC resistance. The series is suitable for various electronic applications requiring compact noise filtering solutions.

Chip Ferrite Bead Replacement Considerations

BLM21PG221SH1D

Chip Ferrite Bead FAQ

Does the BLM21PG221SZ1D 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 primary function of the nickel barrier structure?

The nickel barrier structure of the external electrodes provides excellent solder heat resistance.