BLM31PG500SN1L

Chip Ferrite Bead Overview

The Murata BLM31PG500SN1L is a single-line surface-mount ferrite chip bead in the EMIFIL BLM31_SN series. It features a 1206 (3216 metric) package with dimensions of 3.2 mm length, 1.6 mm width, and 1.1 mm height. The component provides an impedance of 50 Ohms at a test frequency of 100 MHz with a tolerance of 25%. It supports a maximum DC current of 3.5 A and has a maximum DC resistance of 25 mOhms. The device operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Functions as a resistor at noise frequencies to reduce resonance possibilities while maintaining signal waveform integrity
• Nickel barrier structure on external electrodes provides excellent thermal resistance for soldering
• Designed for use in circuits with unstable ground lines without requiring a ground connection

Chip Ferrite Bead Applications

• Power supply line filtering
• General EMI removal applications
• Audio line noise filtering

Chip Ferrite Bead Procurement Notes

Verify the specific impedance value and current rating against the target circuit requirements before integration. Confirm that the 1206 footprint matches the PCB layout design. Ensure the operating temperature range meets the environmental conditions of the final assembly. Cross-reference the manufacturer part number with official distributor catalogs to confirm authenticity and current production status.

Chip Ferrite Bead Selection Notes

Select this component when high current handling capability is required alongside moderate noise suppression. The 3.5 A rating distinguishes it from lower-current variants in the same series. The 50 Ohm impedance offers a balance between attenuation and signal loss for power lines. Consider the low DC resistance to minimize voltage drop across the component during normal operation.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM31PG series, which specializes in high-current ferrite beads. The 'P' designation indicates the high-current variant, while 'G' refers to the specific material characteristics. The suffix 'SN1L' denotes the standard packaging and termination style. This series is engineered for robust performance in demanding electronic environments.

Chip Ferrite Bead Replacement Considerations

Check for other BLM31PG series parts with identical 1206 footprints if different impedance values are needed. Verify that any substitute maintains the 3.5 A current rating and similar DC resistance to ensure circuit compatibility.