SRF1280A-150M

Overview

The SRF1280A-150M is a dual-winding shielded power inductor from the Bourns SRF1280 series. It features a ferrite core and surface-mount construction with dimensions of 12.50mm x 12.50mm x 8.00mm. The component provides an inductance of 15 µH with ±20% tolerance. Electrical specifications include a maximum DC resistance of 33.3 mΩ in parallel configuration and 129 mΩ in series. Rated currents are 5.03 A for parallel operation and 2.51 A for series connection. Saturation currents reach 9.66 A (parallel) and 4.83 A (series). It operates within a temperature range of -40°C to +125°C.

Feature Summary

• Dual-winding architecture supporting both parallel and series circuit configurations
• Shielded magnetic design minimizes electromagnetic interference
• Ferrite core material ensures stable performance under load

Applications

• Point-of-load voltage regulation modules
• DC-DC converter input and output filtering
• Automotive electronic control units

Procurement Notes

Verify the specific suffix 'A' against the manufacturer's official datasheet to confirm exact electrical tolerances and packaging options. Ensure the ordering part number matches the required reel or cut tape format. Cross-reference the AEC-Q200 qualification status if automotive reliability is mandatory for the final assembly.

Selection Notes

Select this component when compact footprint and high current density are required. The dual-winding capability allows flexibility in interleaving phases to reduce ripple current. Verify that the 12.5mm square package fits the PCB silkscreen and keep-out areas. Confirm thermal management requirements align with the 125°C maximum operating temperature rating.

Part Context

This component belongs to the SRF1280 series of coupled inductors designed for high-efficiency power conversion. The series emphasizes low profile and robust shielding for dense board layouts. It serves as a critical energy storage element in modern switching power supplies, offering reliable performance in constrained spaces.

Replacement Considerations

Check the SRF1280-150M for identical electrical parameters without the 'A' suffix variation. Evaluate other Bourns SRF series variants for pin-compatible alternatives with different current ratings.