BLM21BD152SZ1D

Chip Ferrite Bead Overview

The Murata BLM21BD152SZ1D is an unshielded chip ferrite bead in the EMIFIL BLM21_Z series, housed in a 0805 (2012 metric) surface-mount package. It provides an impedance of 1.5 kOhms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 250 mA and has a maximum DC resistance of 450 mOhms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification for automotive applications.

Chip Ferrite Bead Feature Summary

• Provides high-impedance noise suppression for signal lines in the 100 MHz range
• AEC-Q200 qualified for automotive infotainment and electronic systems
• Compact 0805 footprint suitable for space-constrained PCB layouts

Chip Ferrite Bead Applications

• Automotive infotainment system noise filtering
• Signal line EMI suppression in automotive electronics
• High-frequency noise attenuation in compact consumer devices

Chip Ferrite Bead Procurement Notes

Verify the suffix Z1D against the official Murata datasheet to confirm specific packaging or material compliance details. Ensure the selected variant matches the required impedance tolerance and current rating for the target circuit design before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant attenuation at 100 MHz with limited current capacity. The 0805 size offers a balance between thermal performance and board space efficiency. Confirm that the 250 mA continuous current rating aligns with the operational load of the protected signal line.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM21 series, which focuses on small-footprint ferrite beads for digital and analog signal lines. The BD designation typically indicates specific magnetic characteristics optimized for higher impedance values compared to lower-resistance power line variants.

Chip Ferrite Bead Replacement Considerations

Cross-reference with other BLM21BD152 variants from Murata or equivalent 1.5 kOhm @ 100 MHz parts from manufacturers like TDK or Yageo, ensuring identical 0805 dimensions and AEC-Q200 certification if automotive use is required.