BLM21AG221SH1D

Chip Ferrite Bead Overview

The BLM21AG221SH1D is a single-line surface-mount ferrite bead from Murata Electronics, designed for electromagnetic interference (EMI) suppression. It features an impedance of 220 Ohms at 100 MHz and supports a maximum DC current of 700 mA. The component utilizes a 0805 (2012 metric) package with dimensions of 2.00 mm x 1.25 mm x 0.85 mm. It exhibits a maximum DC resistance of 200 mOhms and operates within a temperature range of -55°C to +125°C. This device is AEC-Q200 qualified for automotive reliability.

Chip Ferrite Bead Feature Summary

• Provides effective high-frequency noise attenuation in power lines through ferrite material properties.
• Supports automotive application requirements via AEC-Q200 qualification standards.
• Enables compact circuit board layouts through its small 0805 surface-mount footprint.

Chip Ferrite Bead Applications

• Automotive electronic systems requiring EMI suppression
• Power supply line filtering
• General-purpose noise reduction circuits

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 current rating and impedance specifications for the target design. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm availability and authenticity before procurement.

Chip Ferrite Bead Selection Notes

Select this component when a 220 Ohm impedance at 100 MHz is required for a single-line power path. The 700 mA current rating suits moderate power applications. Consider the 0805 package size for space-constrained designs. Verify that the 200 mOhm DC resistance meets the voltage drop constraints of the specific circuit application.

Chip Ferrite Bead Part Context

This component belongs to the BLM21 series of EMIFIL chip ferrite beads. The series offers various impedance and current ratings within the 0805 package. The AG suffix typically denotes specific impedance characteristics within the broader product family. These components are widely used for suppressing high-frequency noise in digital and analog circuits.

Chip Ferrite Bead Replacement Considerations

BLM21PG221SN1D is listed as a similar alternative by distributors. Verify if the PG series variant meets the specific current and impedance requirements of the original design before substitution.

Chip Ferrite Bead FAQ

Is the BLM21AG221SH1D suitable for automotive applications?

Yes, the component is AEC-Q200 qualified, indicating it meets automotive reliability standards.

What is the maximum DC current rating for this ferrite bead?

The maximum DC current rating is 700 mA.