BLM21SP102SN1D

Chip Ferrite Bead Overview

The Murata BLM21SP102SN1D is a single-line ferrite bead chip in an 0805 (2012 metric) surface-mount package. It provides an impedance of 1 kOhms at 100 MHz with a maximum DC resistance of 0.12 Ohms and a rated current of 1.6A. The component operates within a temperature range of -55°C to +125°C, measures 2.00mm x 1.25mm x 1.05mm, and complies with RoHS3 standards.

Chip Ferrite Bead Feature Summary

• Provides high-current noise suppression capability for power lines
• Offers low DC resistance to minimize voltage drop in power circuits
• Features a compact monolithic design suitable for dense PCB layouts

Chip Ferrite Bead Applications

• Noise filtering on high-current power supply rails
• EMI suppression in portable electronic devices
• Signal integrity management in general-purpose digital circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against the official Murata datasheet to confirm the exact impedance tolerance and packaging configuration. Ensure the selected variant matches the required 1.6A current rating and 0805 footprint for your design. Cross-reference the manufacturer part number directly with authorized distributors to avoid counterfeit components.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant current handling alongside EMI suppression. The 1.6A rating distinguishes it from lower-current variants in the BLM21 family. Verify that the 0.12 Ohm DCR meets the system's power loss constraints. Confirm that the 0805 package dimensions fit the available board space and soldering profile requirements.

Chip Ferrite Bead Part Context

This part belongs to the EMIFIL BLM21SP series, designed specifically for high-current applications. Unlike standard signal-line ferrites, the SP series prioritizes current capacity while maintaining effective noise attenuation. It serves as a critical passive component for stabilizing power distribution networks in consumer electronics and industrial equipment.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other BLM21SP series parts with identical 1.6A ratings and 0805 footprints, such as BLM21SP102SN1D equivalents from authorized channels. Verify that any replacement maintains the same 1 kOhm impedance at 100 MHz and 0.12 Ohm DCR specifications.