BLM18HK331SN1D

Chip Ferrite Bead Overview

The Murata Electronics BLM18HK331SN1D is a single-line chip ferrite bead from the EMIFIL BLM18H series, designed for GHz noise suppression. It features an impedance of 330 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. The component operates within a temperature range of -55°C to +125°C and supports a maximum DC current of 200 mA. Its physical dimensions are 1.6 mm in length, 0.8 mm in width, and 0.8 mm in height, conforming to the 0603 (1608 metric) package. The device utilizes surface mount technology (SMD/SMT) for PCB integration.

Chip Ferrite Bead Feature Summary

• Provides effective high-frequency noise attenuation for GHz-range interference
• Supports compact surface-mount integration in space-constrained designs
• Maintains stable electrical performance across extended industrial temperature ranges

Chip Ferrite Bead Applications

• Power supply circuits requiring EMI filtering
• Battery charger input/output stages
• Portable electronic devices
• Energy-efficient system power lines

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SN1D' against official Murata documentation to confirm tape-and-reel packaging specifications and moisture sensitivity level. Ensure the selected variant matches the required impedance tolerance and current rating for the target application circuit design.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required for GHz noise suppression with a 330 Ohm impedance profile. Evaluate the 200 mA current limit against peak load requirements to prevent saturation. Confirm compatibility with reflow soldering profiles suitable for the specified operating temperature range.

Chip Ferrite Bead Part Context

This part belongs to the Murata BLM18H series, which specializes in chip ferrite beads for high-frequency applications. The series offers various impedance values within the standard 0603 package size, allowing designers to tailor noise filtering characteristics without altering the board layout footprint.

Chip Ferrite Bead Replacement Considerations

Cross-reference with other BLM18H series variants for different impedance values if filtering requirements change. Verify mechanical compatibility with existing footprints before substituting.