BLM21AG331SH1D

Chip Ferrite Bead Overview

The Murata BLM21AG331SH1D is a single-line ferrite bead in an 0805 (2012 metric) surface-mount package. It provides 330 Ohms impedance at 100 MHz with a maximum DC resistance of 160 milliohms and a rated current of 700 mA. The component operates between -55°C and +125°C, measures 2.00mm x 1.25mm x 1.05mm, and complies with RoHS3 standards.

Chip Ferrite Bead Feature Summary

• Functions as a resistor at noise frequencies to reduce resonance possibilities
• Maintains signal waveform integrity during high-frequency filtering
• Single-channel design for differential mode noise suppression

Chip Ferrite Bead Applications

• Audio line noise filtering
• High-speed digital circuit EMI suppression
• Power supply line noise reduction

Chip Ferrite Bead Procurement Notes

Verify the suffix 'SN1D' against 'SH1D' in official datasheets to confirm exact packaging and tape specifications. Ensure the 700mA rating matches the target application's continuous current requirements. Confirm 0805 footprint compatibility with the PCB layout before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when 330 Ohms attenuation at 100 MHz is required within a compact 0805 footprint. The 700mA current rating suits moderate power lines. Verify that the 160 milliohm DC resistance meets voltage drop constraints. Consider thermal dissipation capabilities within the specified -55°C to +125°C operating range.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM21 series, designed for general-purpose noise suppression. The AG designation typically indicates specific material characteristics optimized for broadband attenuation. It serves as a passive component for electromagnetic interference control in compact electronic assemblies.

Chip Ferrite Bead Replacement Considerations

BLM21AG331SN1D offers identical electrical parameters but may differ in packaging configuration. BLM21AG331BH1B shares the same impedance profile within the same series family.