BLM31KN601SZ1L

Chip Ferrite Bead Overview

The Murata BLM31KN601SZ1L is a single-channel ferrite chip bead designed for power line noise suppression. It features a 1206 (3216 metric) surface-mount package with dimensions of 3.2 mm length, 1.6 mm width, and 1.6 mm height. The component provides an impedance of 600 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. It supports a maximum DC current of 2.9 A and has a maximum DC resistance of 38 mOhms. The device operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise attenuation for power lines in the radio frequency spectrum.
• Engineered for high-current applications with a 2.9 A rated capacity.
• Constructed in a compact 1206 surface-mount footprint for space-constrained designs.

Chip Ferrite Bead Applications

• Power supply input filtering
• DC-DC converter output noise suppression
• High-speed digital circuit power rail conditioning

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1L' against official Murata documentation to confirm packaging details and compliance status. Ensure the selected variant matches the required 1206 physical dimensions and 2.9 A current rating for your specific circuit design constraints.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant noise reduction on power rails carrying up to 2.9 A. The 600 Ohm impedance at 100 MHz targets common EMI frequencies. Confirm that the 38 mOhm DC resistance aligns with your voltage drop and power loss budget requirements.

Chip Ferrite Bead Part Context

This part belongs to the BLM31KN series of high-current ferrite beads from Murata Electronics. It is distinct from lower-current variants like the BLM31PG series due to its optimized core material and winding structure for handling higher amperage without saturation.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include BLM31KN601SN1L and BLM31KN601SH1L, which share identical electrical specifications but may differ in reel packaging or tape configuration.

Chip Ferrite Bead FAQ

What is the maximum DC current rating for this ferrite bead?

The BLM31KN601SZ1L is rated for a maximum DC current of 2.9 A.

At what frequency is the 600 Ohm impedance specified?

The impedance value of 600 Ohms is measured at a test frequency of 100 MHz.