BLA31AG300SN4D

Chip Ferrite Bead Overview

The BLA31AG300SN4D is a ferrite chip bead array manufactured by Murata Electronics, designed for surface mount technology in the 1206 (3216 metric) package. It features four channels with an impedance of 30 Ohms at 100 MHz and a tolerance of 25%. The component supports a maximum DC current of 200 mA and has a maximum DC resistance of 100 mOhms. Operating temperatures range from -55°C to +125°C. Physical dimensions are 3.2 mm in length, 1.6 mm in width, and 1.6 mm in height.

Chip Ferrite Bead Feature Summary

• Provides multi-channel EMI suppression within a compact surface-mount footprint
• Utilizes high-permeability ferrite material for effective noise attenuation
• Designed for stable performance across wide industrial temperature ranges

Chip Ferrite Bead Applications

• High-speed data line filtering in portable electronic devices
• Power supply noise suppression in embedded systems
• Signal integrity enhancement in communication interfaces

Chip Ferrite Bead Procurement Notes

Verify the specific suffix SN4D against official Murata documentation to confirm packaging and tape-and-reel specifications. Ensure the ordering part number matches the required impedance and current ratings for the target circuit design. Cross-reference the datasheet for RoHS compliance status and recommended soldering profiles to prevent thermal damage during assembly processes.

Chip Ferrite Bead Selection Notes

Select this component when multiple signal lines require simultaneous noise suppression in space-constrained layouts. The 1206 package offers a balance between current handling capability and board area efficiency. Consider the 30 Ohm impedance value relative to the target frequency spectrum to ensure adequate attenuation without excessive signal degradation for the specific application requirements.

Chip Ferrite Bead Part Context

This component belongs to the Murata BLA series of EMIFIL ferrite chip bead arrays. These arrays are engineered to replace discrete components, reducing PCB footprint and assembly complexity. The series provides consistent electrical characteristics for common-mode and differential-mode noise reduction in modern electronic circuits requiring reliable EMI management.

Chip Ferrite Bead FAQ

What is the physical pin configuration of the BLA31AG300SN4D?

The device features an 8-pad surface mount configuration corresponding to its four internal channels within the 1206 package.

How does the impedance vary with frequency?

The specified impedance is 30 Ohms measured at 100 MHz under standard conditions of 20°C ambient temperature.