BLM21AG331SZ1D

Chip Ferrite Bead Overview

The BLM21AG331SZ1D is a single-line ferrite bead from the Murata EMIFIL BLM21_Z series, designed for electromagnetic interference suppression in surface-mount applications. Housed in an 0805 (2012 metric) package with dimensions of 2 mm length and 1.25 mm width, it provides 330 Ohms impedance at 100 MHz. The component supports a maximum DC current of 800 mA and features a maximum DC resistance of 160 milliohms. It operates within a temperature range of -55°C to +125°C and holds AEC-Q200 qualification for automotive reliability.

Chip Ferrite Bead Feature Summary

• Provides effective high-frequency noise attenuation through ferrite material properties
• Supports high-current operation suitable for power line filtering applications
• Automotive-grade construction ensures reliability under rigorous environmental conditions

Chip Ferrite Bead Applications

• Automotive infotainment system noise suppression
• Power supply line filtering in electronic circuits
• EMI reduction on data lines requiring high current handling

Chip Ferrite Bead Procurement Notes

Verify the specific suffix code against official Murata documentation to confirm exact electrical tolerances and packaging configurations. Ensure the selected variant matches the required impedance characteristics and current ratings for the target circuit design before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits that require robust EMI suppression in compact spaces while maintaining high current capacity. The 0805 footprint offers a balance between thermal performance and board space efficiency. Confirm compatibility with automated assembly processes given the reel or cut tape availability options.

Chip Ferrite Bead Part Context

This component belongs to the BLM21 family of chip ferrite beads, which are widely used for signal integrity improvement. The AG suffix typically denotes specific material characteristics optimized for broad-spectrum noise absorption. These components serve as passive filters to protect sensitive electronics from conducted interference.

Chip Ferrite Bead Replacement Considerations

Cross-reference with other BLM21 series variants such as BLM21AG331SN1D for identical electrical specifications but potential differences in packaging or tolerance grades. Verify physical dimensions and terminal configurations to ensure mechanical compatibility during replacement.