BLM21SP181BH1D

Chip Ferrite Bead Overview

The Murata BLM21SP181BH1D is a single-line ferrite chip bead in the EMIFIL BLM21 series, housed in an 0805 (2012 metric) surface-mount package. It provides 180 Ohms impedance at 100 MHz with a 25% tolerance. The component supports a maximum DC current of 4A and has a maximum DC resistance of 30 mOhms. It operates within a temperature range of -55°C to +125°C and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• Provides high-frequency noise suppression for single power lines
• Designed for automotive applications with AEC-Q200 qualification
• Supports high current loads up to 4A
• Compact 0805 surface-mount footprint

Chip Ferrite Bead Applications

• Automotive electronic circuit noise filtering
• Power supply line EMI suppression
• High-current signal path protection

Chip Ferrite Bead Procurement Notes

Verify the specific suffix BH1D against official Murata documentation to confirm packaging and tape specifications. Ensure the procurement channel sources directly from authorized distributors to guarantee component authenticity and traceability. Cross-reference the datasheet revision date to confirm compatibility with current design requirements.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring 180 Ohms impedance at 100 MHz for single-line power filtering. It is suitable for applications demanding high current handling capability of 4A. Consider the 0805 package size for space-constrained layouts. Verify thermal management needs as self-heating occurs under high DC current conditions.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM21 series of ferrite beads. The series offers various impedance values and current ratings in standardized packages. The BLM21SP variant specifically targets higher current applications compared to standard BLM21 models, making it suitable for robust power distribution networks.

Chip Ferrite Bead Replacement Considerations

Check for direct substitutes within the BLM21SP series with matching 180 Ohm impedance and 4A rating. Ensure any replacement maintains the same 0805 footprint and AEC-Q200 qualification if automotive compliance is required.

Chip Ferrite Bead FAQ

What is the impedance value of the BLM21SP181BH1D?

The impedance is 180 Ohms measured at 100 MHz.

Is this component qualified for automotive use?

Yes, the BLM21SP181BH1D meets the AEC-Q200 qualification standard.

What is the maximum DC current rating?

The maximum DC current rating is 4A.