BLM18AG121BH1D

Chip Ferrite Bead Overview

The Murata BLM18AG121BH1D is a single-line ferrite chip bead designed for power line noise suppression. It features a 0603 (1608 metric) surface-mount package with dimensions of 1.60mm x 0.80mm x 0.95mm maximum height. The component provides an impedance of 120 Ohms at 100 MHz with a tolerance of ±25%. It supports a maximum DC current of 800mA and has a maximum DC resistance of 180 milliohms. Rated for AEC-Q200 automotive standards, it operates within a temperature range of -55°C to +150°C.

Chip Ferrite Bead Feature Summary

• Provides high-frequency noise attenuation on DC power lines through ferrite material properties.
• Complies with AEC-Q200 automotive qualification standards for reliability.
• Utilizes a compact 0603 surface-mount footprint for dense circuit board layouts.

Chip Ferrite Bead Applications

• Automotive electronic systems requiring EMI suppression
• DC power line filtering in consumer electronics
• Noise reduction in portable device power circuits

Chip Ferrite Bead Procurement Notes

Verify the specific suffix BH1D against official Murata documentation to confirm packaging type and tape/reel specifications. Ensure the procurement source provides valid RoHS3 compliance certificates. Cross-reference the part number with the manufacturer's active status list to confirm availability and lifecycle stage before finalizing orders.

Chip Ferrite Bead Selection Notes

Select this component when space constraints require a 0603 package size. Choose based on the required 120 Ohm impedance at 100 MHz for target noise frequencies. Verify that the 800mA current rating meets the circuit's maximum DC load requirements. Confirm compatibility with the operating temperature range up to 150°C if used in high-thermal environments.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM18 series, which focuses on small-footprint ferrite beads for general-purpose and automotive applications. The AG designation typically indicates specific material characteristics optimized for power line filtering within this product family.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include BLM18AG121SH1D and BLM18AG121BH1D variants from Murata, provided they share identical electrical parameters and package dimensions. Verify equivalent impedance curves and current ratings before substitution.