BLM18PG471SN1D

Chip Ferrite Bead Overview

The Murata BLM18PG471SN1D is a single-line chip ferrite bead from the EMIFIL BLM18 series, designed for EMI noise suppression in high-speed digital circuits. It features a 0603 (1608 metric) surface-mount package with dimensions of 1.6 mm length, 0.8 mm width, and 0.8 mm height. The component provides an impedance of 470 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. It supports a maximum DC current of 1 A and has a maximum DC resistance of 200 mOhms. Operating temperatures range from -55°C to +125°C, and it holds AEC-Q200 automotive qualification.

Chip Ferrite Bead Feature Summary

• Provides effective electromagnetic interference suppression across a wide frequency spectrum by converting noise energy into heat through resistive impedance characteristics.
• Features a compact 0603 surface-mount footprint suitable for space-constrained printed circuit board layouts.
• Capable of handling continuous direct currents up to 1 Ampere without significant performance degradation.
• Complies with automotive reliability standards, ensuring stability under rigorous environmental conditions.

Chip Ferrite Bead Applications

• Noise filtering on power supply lines in automotive electronic control units
• EMI suppression for high-speed data interfaces in consumer electronics
• Signal integrity protection in portable communication devices

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D to confirm the standard packaging configuration. Ensure compatibility with RoHS3 directives if required by your manufacturing process. Cross-reference the AEC-Q200 certification status against your specific quality assurance protocols. Confirm that the 1A current rating aligns with your circuit's operational requirements to prevent saturation or excessive heating during normal operation.

Chip Ferrite Bead Selection Notes

Select this component when a moderate impedance level of 470 Ohms is sufficient for noise attenuation in low-to-medium current applications. The 0603 package offers a balance between thermal dissipation capabilities and board space efficiency. Consider the 200 mOhm DC resistance impact on voltage drop when designing power distribution networks. The wide operating temperature range makes it suitable for both commercial and automotive environments.

Chip Ferrite Bead Part Context

This part belongs to Murata's BLM18 series of chip ferrite beads, which are widely used for EMI suppression in various electronic devices. The series is known for its consistent performance and reliability in suppressing noise in the MHz to GHz frequency ranges. The BLM18PG variant specifically denotes the impedance and current characteristics within this family.

Chip Ferrite Bead Replacement Considerations

• BLM18PG471SZ1D

Chip Ferrite Bead FAQ

What is the impedance value of the BLM18PG471SN1D at 100 MHz?

The impedance is 470 Ohms at a test frequency of 100 MHz.

Is this component qualified for automotive applications?

Yes, the BLM18PG471SN1D is qualified according to the AEC-Q200 standard.

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

The maximum DC current rating is 1 Ampere.