BLM21PG331BH1D

Chip Ferrite Bead Overview

The Murata BLM21PG331BH1D is a single-channel ferrite chip bead in an 0805 (2012 metric) surface-mount package. It provides 330 Ohms impedance at 100 MHz with a maximum DC current rating of 1 Ampere and a maximum DC resistance of 70 milliohms. The component operates within a temperature range of -55°C to +125°C and features a 25% impedance tolerance.

Chip Ferrite Bead Feature Summary

• Provides electromagnetic interference suppression for power lines
• Designed for surface-mount assembly on printed circuit boards
• Constructed from ferrite material for high-frequency noise attenuation

Chip Ferrite Bead Applications

• Power supply circuits
• EMI suppression filtering

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation to confirm exact electrical tolerances and packaging configurations. Ensure the selected variant matches the required impedance and current ratings for the target application. Cross-reference datasheets to validate compliance with relevant environmental standards before procurement.

Chip Ferrite Bead Selection Notes

Select this component when a 0805 footprint is required for power line filtering. Evaluate the 1A current rating against peak load requirements to prevent saturation. Consider the 70 milliohm DC resistance impact on voltage drop. Confirm that the 330 Ohm impedance at 100 MHz aligns with the targeted noise frequency spectrum.

Chip Ferrite Bead Part Context

This part belongs to the BLM21 series of ferrite beads manufactured by Murata Electronics. The series offers various impedance values and current ratings within the standard 0805 package size, allowing designers to select appropriate components for different power line noise suppression needs without altering board layout dimensions.

Chip Ferrite Bead Replacement Considerations

Consult official Murata substitution guides for verified equivalents. Generic cross-references may not match specific impedance curves or thermal characteristics.