SRF0703-3R3M

Arrays, Signal Transformers Overview

The Bourns SRF0703-3R3M is a dual-winding shielded coupled inductor designed for surface mount applications. It features an inductance of 3.3 µH per winding with a 20% tolerance. The component supports a maximum DC current of 3.31 A and exhibits a maximum DC resistance of 31.6 mΩ. Electrical configuration allows for 3.3 µH in parallel or 13.2 µH in series. Physical dimensions are 7.6 mm x 7.6 mm x 3.4 mm, operating within a temperature range of -40°C to +105°C.

Arrays, Signal Transformers Feature Summary

• Dual-winding architecture providing flexible circuit integration options
• Shielded magnetic design to minimize electromagnetic interference
• Surface mount construction for automated PCB assembly

Arrays, Signal Transformers Applications

• DC-DC converter input/output filtering
• Power supply ripple reduction circuits
• Coupled inductor filter stages in power electronics

Arrays, Signal Transformers Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Bourns before procurement. Confirm that the 3.31 A current rating aligns with your thermal management requirements. Ensure PCB footprint matches the 7.6 mm x 7.6 mm package dimensions. Cross-reference manufacturer part numbers to avoid counterfeit components.

Arrays, Signal Transformers Selection Notes

Select this component when dual-winding coupling is required for noise cancellation or phase shifting in power stages. Compare against single-winding alternatives if isolation is not needed. Evaluate the 31.6 mΩ resistance impact on overall efficiency. Consider the 105°C operating limit for high-temperature environments.

Arrays, Signal Transformers Part Context

This component belongs to the SRF0703 series of shielded coupled inductors from Bourns. The series offers various inductance values within the same 0703 mechanical footprint. It serves as a specialized passive component distinct from standard single-coil power inductors like the SDR0703 series.

Arrays, Signal Transformers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative Bourns series such as SRP7030 based on dimensional and electrical constraints.