BLM31KN121SN1K

Chip Ferrite Bead Overview

The Murata BLM31KN121SN1K is a single-line ferrite bead designed for power line noise suppression. It features an impedance of 120 Ohms at 100 MHz and supports a maximum rated current of 6A. The component has a maximum DC resistance of 9 milliohms and operates within a temperature range of -55°C to 125°C. It utilizes a 1206 (3216 metric) surface-mount package with dimensions of 3.20mm x 1.60mm and a maximum height of 1.80mm.

Chip Ferrite Bead Feature Summary

• Provides effective electromagnetic interference suppression on power lines through high-current handling capabilities.
• Functions as a resistive element at noise frequencies to minimize resonance risks while maintaining signal integrity.

Chip Ferrite Bead Applications

• Power supply circuits
• Battery charger systems
• Portable electronic devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'K' against official Murata documentation to confirm packaging or tolerance variations, as ordering codes may indicate distinct handling requirements. Confirm RoHS compliance status and moisture sensitivity level prior to integration into manufacturing processes to ensure adherence to environmental standards.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant current capacity alongside noise filtering. The low DC resistance minimizes voltage drop across the power rail. Ensure the application environment remains within the specified thermal limits to maintain performance stability during continuous operation.

Chip Ferrite Bead Part Context

This part belongs to the BLM31KN series, which specializes in high-rated current SMD ferrite beads. These components are engineered for AI servers and other demanding applications where standard ferrite beads might saturate. The series offers robust noise suppression without compromising power delivery efficiency.

Chip Ferrite Bead Replacement Considerations

Check for BLM31KN121SN1L if alternative packaging is required. Verify electrical parameters such as impedance and current rating before substituting with generic equivalents to ensure circuit compatibility.