BLM21PG102SN1D

Chip Ferrite Bead Overview

The Murata BLM21PG102SN1D is a single-line ferrite bead chip designed for power line noise suppression. It features an impedance of 1000 Ohms at 100 MHz and supports a maximum rated current of 3 Amperes. The component exhibits a maximum DC resistance of 25 milliohms, ensuring minimal voltage drop in high-current applications. Housed in a compact 0805 (2012 metric) surface-mount package with dimensions of 2.00mm x 1.25mm x 1.05mm, it operates reliably within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides effective electromagnetic interference suppression on power lines through high impedance characteristics at target frequencies.
• Supports high current loads up to 3A with low DC resistance to maintain signal integrity and minimize power loss.
• Utilizes a robust monolithic ceramic construction suitable for automated surface-mount assembly processes.

Chip Ferrite Bead Applications

• Noise filtering for power supply rails in portable electronic devices
• Electromagnetic interference suppression in automotive infotainment systems
• Signal conditioning for high-speed data lines requiring common-mode noise reduction

Chip Ferrite Bead Procurement Notes

Verify the complete part number including suffixes to ensure correct impedance and tolerance specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to procurement. Check for alternative packaging options such as cut tape or reel if specific handling equipment is required. Ensure compatibility with existing PCB footprint dimensions and reflow soldering profiles.

Chip Ferrite Bead Selection Notes

Select this component when high current capacity is required alongside significant noise attenuation. Compare impedance values at specific operating frequencies against circuit requirements. Evaluate thermal performance under continuous load conditions to prevent saturation. Consider physical size constraints relative to available board space and adjacent components.

Chip Ferrite Bead Part Context

This component belongs to the EMIFIL BLM21 series, which offers various impedance ratings and current capabilities in standard footprints. The PG suffix typically indicates specific material properties optimized for power line applications. This series is widely used across consumer electronics and industrial equipment for EMI mitigation.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other BLM21 series variants with matching 1000 Ohm impedance and similar current ratings. Verify equivalent package dimensions and terminal configurations before substitution. Consult manufacturer cross-reference guides for approved alternatives with identical electrical characteristics.