BLM21SP331SH1D

Chip Ferrite Bead Overview

The Murata BLM21SP331SH1D is a single-line ferrite bead designed for power line noise suppression in the 0805 (2012 metric) surface-mount package. It provides an impedance of 330 Ohms at 100 MHz with a maximum DC resistance of 45 milliohms and a rated current capacity of 2.8 Amperes. The component operates within a temperature range of -55°C to 125°C and meets AEC-Q200 automotive qualification standards.

Chip Ferrite Bead Feature Summary

• AEC-Q200 qualified for automotive reliability requirements
• High current handling capability suitable for power lines
• Low DC resistance minimizes voltage drop and power loss

Chip Ferrite Bead Applications

• Automotive electronic circuit noise filtering
• Power supply line EMI suppression
• High-current signal path protection

Chip Ferrite Bead Procurement Notes

Verify the specific suffix against official Murata documentation to confirm electrical characteristics, as variations exist within the BLM21 series. Ensure the selected variant matches the required current rating and impedance profile for the target application before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when high current handling is required alongside significant noise attenuation. Compare the 2.8A rating against circuit load requirements and verify that the 330 Ohm impedance at 100 MHz aligns with the targeted noise frequency spectrum for effective EMI mitigation.

Chip Ferrite Bead Part Context

This part belongs to the Murata EMIFIL BLM21PG/SP series of chip ferrite beads. These components are engineered for compact PCB layouts while providing robust electromagnetic interference suppression. The series supports both general industrial and stringent automotive applications through standardized packaging and thermal performance.

Chip Ferrite Bead Replacement Considerations

BLM21SP331SN1D is a confirmed substitute offering identical electrical specifications and form factor.