SRF1280A-8R2Y

Overview

The Bourns SRF1280A-8R2Y is a dual-winding shielded power inductor from the SRF1280A series, designed for surface-mount applications. It features an 8.2 µH nominal inductance with a ±30% tolerance and AEC-Q200 automotive qualification. The component measures 12.5 mm x 12.5 mm x 7.5 mm and utilizes a ferrite core with wirewound construction. Key electrical specifications include a maximum DC current of 6.8 A, a saturation current of 6.8 A, and a maximum DC resistance of 20.5 mΩ. It operates within a temperature range of -40°C to +125°C, with a minimum Q factor of 22 at 7.96 MHz and a self-resonant frequency of 20 MHz.

Feature Summary

• Dual-winding configuration allows flexible circuit integration including parallel, series, and transformer setups.
• Shielded magnetic design minimizes electromagnetic interference and stray field effects.
• Automotive-grade reliability certified under the AEC-Q200 standard.

Applications

• Automotive power supply circuits
• Parallel or series inductor configurations
• Transformer implementations

Procurement Notes

Verify the specific part number against official manufacturer documentation to ensure accuracy, as datasheets may contain multiple variants within the SRF1280A family. Confirm that the dual-winding specification matches the intended circuit topology, distinguishing this model from single-winding alternatives. Cross-reference the AEC-Q200 certification status if automotive compliance is required for the final assembly.

Selection Notes

Select this component when a dual-winding solution is necessary for power conversion topologies requiring isolation or specific impedance matching. The high saturation current of 6.8 A supports demanding load conditions. Ensure the PCB footprint accommodates the 12.5 mm x 12.5 mm dimensions and that the thermal environment remains within the specified -40°C to +125°C operating range for reliable performance.

Part Context

This component belongs to the SRF1280A series of dual-winding shielded power inductors manufactured by Bourns Inc. The series is engineered for high-current applications, offering robust magnetic shielding and compact surface-mount packaging. It serves as a specialized alternative to single-winding inductors where dual-coil functionality is explicitly required by the schematic design.

Replacement Considerations

Direct substitutes within the same series include other SRF1280A variants with different inductance values, such as SRF1280A-4R7Y or SRF1280A-100M. Verify that any replacement maintains the dual-winding architecture and identical physical footprint to ensure compatibility with existing board layouts.

FAQ

What is the electrical configuration of the SRF1280A-8R2Y?

It is a dual-winding inductor array, allowing for series, parallel, or transformer connections.

Is this component suitable for automotive applications?

Yes, it is qualified according to the AEC-Q200 standard for automotive electronic components.