BNX028-01L

Overview

The Murata BNX028-01L is a surface-mount LC EMI filter circuit designed for DC power line noise suppression. It features a rated voltage of 16 V and a current rating of 20 A, with a typical operating current of 15 A. The component includes an integrated capacitance of 47 µF and a low resistance of 430 µΩ. It operates within a frequency range of 30 kHz to 1 GHz and supports temperatures from -40°C to +105°C. The device utilizes SMD/SMT J-leads in a compact package measuring 12.1 mm x 9.1 mm x 3.5 mm.

Feature Summary

• Provides effective electromagnetic interference suppression on DC power lines through integrated LC filtering topology.
• Supports high current loads suitable for demanding mobile device power applications.
• Utilizes a compact surface-mount footprint to facilitate automated assembly and space-constrained designs.

Applications

• DC power line filtering in mobile devices
• Noise suppression for data lines in portable electronics

Procurement Notes

Verify the specific electrical ratings against your system requirements, particularly the 16 V voltage limit and 20 A current capacity. Confirm that the 430 µΩ resistance aligns with your efficiency targets. Ensure the SMD package dimensions fit your PCB layout constraints. Check RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when designing circuits requiring robust EMI filtering for low-voltage, high-current DC rails. The integrated capacitor value reduces external component count compared to discrete solutions. Consider the thermal performance at +105°C maximum operating temperature. Evaluate the trade-off between the 47 µF capacitance and the physical size of the 4-SMD package.

Part Context

This part belongs to the Murata EMIFIL BNX series, which specializes in block-type EMI filters for consumer electronics. The series is engineered to meet the stringent noise reduction requirements of modern mobile devices while maintaining small form factors. These filters are commonly used in smartphones and tablets to protect sensitive components from conducted interference.

Replacement Considerations

Consult official Murata documentation for verified substitute part numbers within the BNX series. Cross-referencing requires matching voltage, current, and capacitance specifications precisely. Generic equivalents may not provide identical noise suppression characteristics or reliability standards.