BLM18PG121SN1D

Chip Ferrite Bead Overview

The Murata BLM18PG121SN1D is a single-line ferrite chip bead designed for EMI suppression in power lines. It features an impedance of 120 Ohms at 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 2 A and has a maximum DC resistance of 50 mOhms. Housed in a standard 0603 (1608 metric) surface-mount package measuring 1.6 mm x 0.8 mm x 0.8 mm, it operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Designed to suppress high-frequency noise on power supply lines without requiring a ground connection.
• Features a nickel barrier electrode structure that provides excellent resistance to soldering heat.
• Optimized for low-impedance circuits to minimize signal distortion and reduce resonance risks.

Chip Ferrite Bead Applications

• EMI suppression filters for power management circuits
• Noise filtering in portable electronic devices
• Signal conditioning in industrial control systems

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SN1D' against the official Murata datasheet to confirm the exact termination type and reel specifications. Ensure the selected variant matches the required packaging format for automated assembly processes. Cross-reference the RoHS compliance status with current regulatory requirements before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required for power line filtering with a 2A current rating. The 120 Ohm impedance at 100 MHz targets specific noise frequencies common in digital power supplies. Consider the low DCR value to minimize voltage drop and power loss in the circuit path compared to higher-resistance alternatives.

Chip Ferrite Bead Part Context

This part belongs to the EMIFIL BLM18P series, which offers various impedance values in the compact 0603 size. The series is engineered for applications where space constraints limit the use of larger ferrite beads while maintaining effective high-frequency noise attenuation capabilities in dense PCB layouts.

Chip Ferrite Bead Replacement Considerations

Check for direct substitutes within the same series or package size if availability is constrained. Verify that any alternative maintains the 120 Ohm impedance at 100 MHz and meets the 2A current handling requirement to ensure circuit performance consistency.

Chip Ferrite Bead FAQ

Does this component require a ground connection?

No, the BLM18PG121SN1D is a single-line ferrite bead that does not require a ground connection for operation.

What is the maximum operating temperature?

The component is rated for a maximum operating temperature of +125°C.