BLM15PD121SN1D

Chip Ferrite Bead Overview

The Murata BLM15PD121SN1D is a single-line ferrite chip bead in the EMIFIL BLM15PD series, designed for surface-mount assembly in a 0402 (1005 metric) package. It provides an impedance of 120 Ohms at a test frequency of 100 MHz with a tolerance of ±25%. The component supports a maximum DC current of 1.3 A and features a maximum DC resistance of 90 mOhms. It operates within a temperature range of -55°C to +125°C and measures 1.0 mm in length, 0.5 mm in width, and 0.5 mm in height.

Chip Ferrite Bead Feature Summary

• Provides high-impedance attenuation for noise suppression on power lines at 100 MHz
• Designed for low-impedance circuits with minimal DC voltage drop due to low resistance
• Eliminates the need for a ground connection, allowing flexible placement in ungrounded circuits

Chip Ferrite Bead Applications

• EMI suppression filters for power supply lines
• Noise filtering in portable electronic devices
• Signal integrity protection in data transmission lines

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN1D against official Murata documentation to confirm packaging type and tape dimensions. Ensure the selected variant matches the required impedance tolerance and current rating for the target circuit design. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm RoHS compliance status and availability.

Chip Ferrite Bead Selection Notes

Select this component when space constraints require a 0402 footprint for power line filtering. Choose based on the 1.3 A current carrying capacity and 120 Ohm impedance requirement at 100 MHz. Consider the low DC resistance to minimize power loss in sensitive power rails compared to higher-resistance alternatives.

Chip Ferrite Bead Part Context

This component belongs to the Murata EMIFIL BLM15PD series of multi-layer ferrite beads. These devices are engineered for GHz-band noise suppression using monolithic ceramic technology. The series offers various impedance values optimized for different frequency ranges while maintaining compact dimensions suitable for dense PCB layouts.

Chip Ferrite Bead FAQ

Does the BLM15PD121SN1D require a ground connection?

No, this single-line ferrite bead does not require a ground connection, making it suitable for circuits without stable grounding.

What is the maximum operating temperature?

The maximum operating temperature for this component is +125°C.