BLM31KN801SZ1L

Chip Ferrite Bead Overview

The Murata BLM31KN801SZ1L is a single-channel ferrite chip bead designed for power line noise suppression in the 1206 (3216 metric) surface-mount package. It exhibits an impedance of 800 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. The component supports a maximum DC current rating of 2.5 A and maintains a maximum DC resistance of 50 mOhms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification.

Chip Ferrite Bead Feature Summary

• Functions as a resistive element at high frequencies to suppress electromagnetic interference on power lines.
• Minimizes signal waveform distortion and reduces the likelihood of resonance during operation.
• Engineered for high-rated current applications suitable for demanding automotive environments.

Chip Ferrite Bead Applications

• Automotive electronic systems requiring AEC-Q200 qualified components
• AI server power distribution networks
• General power line noise filtering circuits

Chip Ferrite Bead Procurement Notes

Verify the suffix SZ1L confirms AEC-Q200 automotive qualification and specific packaging configuration. Confirm that the 1206 footprint matches the target PCB layout dimensions. Ensure the 2.5A current rating aligns with the circuit's peak load requirements to prevent saturation or thermal issues.

Chip Ferrite Bead Selection Notes

Select this component when high-frequency noise attenuation is required on power rails carrying up to 2.5 Amperes. The 800 Ohm impedance at 100 MHz provides effective damping for specific noise spectra. Consider the low DC resistance to minimize voltage drop and power loss in the supply path compared to higher resistance alternatives.

Chip Ferrite Bead Part Context

This part belongs to the BLM31KN series, which features high rated current capabilities. The series is specifically marketed for use in AI servers and automotive electronics. The BLM31KN designation indicates a specific impedance and current handling profile within the broader BLM ferrite bead family.

Chip Ferrite Bead Replacement Considerations

BLM31KN801SH1L is documented as a parameter-equivalent substitute option.

Chip Ferrite Bead FAQ

Is the BLM31KN801SZ1L qualified for automotive applications?

Yes, the component holds AEC-Q200 qualification, making it suitable for automotive electronic systems.

How does the BLM series handle signal waveforms?

The design functions nearly as a resistor at noise frequencies, which greatly reduces the possibility of resonance and leaves signal waveforms undistorted.