SRF1280-R47Y

Overview

The Bourns SRF1280-R47Y is a shielded dual-winding surface-mount inductor array from the SRF1280 series. It features two coils with an individual inductance of 0.47 µH and a tolerance of ±30%. In parallel connection, the total inductance is 0.1175 µH with a maximum DC resistance of 5.5 mΩ and a rated current of 17.9 A. In series connection, the total inductance is 1.88 µH with a maximum DC resistance of 21.6 mΩ and a rated current of 8.94 A. The component operates within a temperature range of -40°C to +125°C and has dimensions of 12.50mm x 12.50mm x 8.00mm.

Feature Summary

• Dual-winding configuration allowing flexible series or parallel circuit integration
• Magnetic shielding design to minimize electromagnetic interference
• High saturation and rated current capabilities for power applications

Applications

• DC/DC converter output filtering
• Automotive electronic systems
• Power supply input/output stages

Procurement Notes

Verify the specific suffix 'R47Y' against the official Bourns datasheet to confirm the 0.47 µH value and ±30% tolerance. Ensure the ordering part number matches the required packaging format (TR, CT, or Digi-Reel) as these affect handling but not electrical performance. Confirm RoHS3 compliance status if required by your manufacturing standards.

Selection Notes

Select this component when a compact dual-inductor solution is needed for high-current power stages. The choice between series or parallel connection depends on the target inductance and current requirements of the specific circuit topology. Ensure the PCB footprint accommodates the 12.50mm x 12.50mm package size and that thermal management supports the operating temperature range.

Part Context

This component belongs to the Bourns SRF1280 series of dual-winding shielded power inductors. These components are designed for surface-mount assembly and are characterized by low DC resistance and high current handling. The series offers various inductance values to suit different power conversion needs while maintaining a consistent physical footprint for design flexibility.

Replacement Considerations

Check the SRF1280A-470M for similar specifications within the same family. Verify pinout compatibility and electrical parameters such as saturation current and DC resistance before substitution. Ensure the replacement part meets the same mechanical and environmental requirements.