SRF1280-100M

Overview

The SRF1280-100M is a dual-winding shielded power inductor from the Bourns SRF1280 series, designed for surface-mount applications. It features a ferrite core and wirewound construction within a 12.5mm x 12.5mm x 8.0mm package. The component provides an inductance of 10 µH with a ±20% tolerance. Key electrical specifications include a maximum DC resistance of 92.1 mΩ in series configuration and 24.1 mΩ in parallel. It supports a saturation current of 6.04 A (series) or higher in parallel modes, operating reliably between -40°C and +125°C.

Feature Summary

• Dual-winding architecture enabling flexible series or parallel circuit configurations
• Shielded design to minimize electromagnetic interference and magnetic flux leakage
• Ferrite core construction optimized for high-frequency power applications

Applications

• Point-of-load (POL) voltage regulation modules
• DC-DC converter output filtering stages
• Power supply input/output chokes

Procurement Notes

Verify the specific datasheet version for the SRF1280 series, as parameters may vary slightly between manufacturing batches. Confirm that the dual-winding pinout matches your PCB footprint requirements. Ensure thermal management strategies account for the specified saturation currents and DC resistance values under actual operating conditions.

Selection Notes

Select this component when dual-coil functionality is required for interleaved or coupled inductor topologies. The 1280 footprint offers a balance between current handling capacity and board space efficiency. Consider the parallel connection mode if lower DC resistance and higher current capability are prioritized over the series configuration.

Part Context

This part belongs to the SRF1280 series of dual-winding shielded power inductors manufactured by Bourns. The series is characterized by its compact 12.5mm square profile and robust shielding capabilities. It is distinct from single-winding variants like the SRR1280, offering two independent coils within a single package for advanced power management designs.

Replacement Considerations

Direct substitutes must match the 10 µH inductance, dual-winding structure, and 1280 footprint. Verify equivalent saturation current ratings and DC resistance limits. Single-winding equivalents require circuit redesign to accommodate the additional coil.