SRF0703HA-221M

Arrays, Signal Transformers Overview

The Bourns SRF0703HA-221M is a shielded dual-winding coupled inductor from the SRF0703HA series, designed for surface-mount PCB assembly. It features a ferrite core and measures 7.6 mm x 7.6 mm x 3.4 mm. The component provides an inductance of 220 µH ±20% in parallel configuration and 922.6 µH in series. Maximum DC resistance values are 148 mΩ for the parallel winding and 5.5 Ω for the series connection. It supports a maximum operating temperature of +150°C and complies with AEC-Q200 automotive standards.

Arrays, Signal Transformers Feature Summary

• Dual-winding architecture with configurable series or parallel connectivity
• Shielded construction utilizing a ferrite core to minimize electromagnetic interference
• Automotive-grade reliability certified under AEC-Q200 standards
• High thermal stability supporting operation up to +150°C

Arrays, Signal Transformers Applications

• Automotive power supply circuits requiring AEC-Q200 compliance
• DC-DC converter input/output filtering stages
• Multi-phase voltage regulator modules (VRMs)
• Compact power delivery systems in constrained PCB footprints

Arrays, Signal Transformers Procurement Notes

Verify the specific suffix 'M' against the manufacturer's official datasheet to confirm packaging type and tolerance specifications. Ensure the selected variant matches the required automotive qualification level. Cross-reference the part number with the latest Bourns documentation to validate RoHS3 compliance status and current production lifecycle stage before finalizing procurement orders.

Arrays, Signal Transformers Selection Notes

Select this component when a compact footprint is critical for high-density designs. The dual-winding capability allows flexibility in circuit topology, supporting both interleaved and independent phase configurations. Verify that the 220 µH parallel inductance and 0.52 A current rating align with the specific load requirements of the target power stage application.

Arrays, Signal Transformers Part Context

This component belongs to the SRF0703HA series, which represents Bourns' high-temperature coupled inductor line. The series is engineered for automotive and industrial environments where space constraints and thermal resilience are paramount. The HA designation typically indicates enhanced thermal performance compared to standard variants within the broader SRF0703 family.

Arrays, Signal Transformers Replacement Considerations

Direct substitutes include other Bourns SRF0703HA series parts with matching inductance and current ratings. Non-Bourns equivalents must be evaluated for identical footprint dimensions, pinout compatibility, and AEC-Q200 certification to ensure seamless integration without redesigning the PCB layout.

Arrays, Signal Transformers FAQ

What is the difference between the parallel and series inductance values?

In parallel configuration, the inductance is 220 µH, suitable for higher current applications. In series configuration, the inductance increases to 922.6 µH, providing higher impedance for filtering purposes.

Is this component suitable for high-temperature automotive environments?

Yes, the SRF0703HA-221M is AEC-Q200 qualified and rated for a maximum operating temperature of +150°C, making it suitable for demanding automotive applications.