SRF1280-2R2Y

Overview

The Bourns SRF1280-2R2Y is a dual-winding shielded power inductor from the SRF1280 series, designed for surface mount applications. It features an inductance of 2.2 µH with a tolerance of ±30%. The component supports a maximum DC current of 12.5 A and has a maximum DC resistance of 9.2 mΩ. It utilizes a ferrite core and is fully molded. The device operates within a temperature range of -40°C to 125°C and meets AEC-Q200 automotive standards. Dimensions are 12.5 mm length, 8.0 mm width, and 8.0 mm height.

Feature Summary

• Dual-winding configuration for coupled inductor applications
• Shielded magnetic structure minimizes external electromagnetic interference
• Fully molded construction provides mechanical stability and environmental protection
• Automotive-grade reliability compliant with AEC-Q200 standards

Applications

• Automotive power distribution networks
• DC-DC converter input/output filtering
• Coupled inductor circuits in power supplies
• High-current automotive electronics modules

Procurement Notes

Verify the specific suffix 'Y' corresponds to the required tape and reel packaging quantity as defined by the manufacturer's standard. Confirm that the dual-winding topology matches the circuit schematic requirements, as single-winding variants exist within the same series. Ensure the PCB footprint aligns with the specified 12.8 x 8.0 mm dimensions. Cross-reference the AEC-Q200 qualification status if the application demands strict automotive compliance documentation.

Selection Notes

Select this component when a coupled inductor with high current handling capability is required. The 2.2 µH value suits applications needing moderate energy storage with low impedance. Consider the 12.5 A saturation current for heavy-duty power stages. The shielded design is critical for noise-sensitive environments. Compare against single-winding alternatives if electrical isolation between coils is not necessary for the specific topology.

Part Context

This part belongs to the SRF1280 series of dual-winding shielded power inductors manufactured by Bourns Inc. The series is engineered for high-current automotive and industrial applications. The model number indicates a 2.2 µH nominal inductance. The series shares common physical dimensions and mounting characteristics across different inductance values, facilitating board layout consistency for various power designs.

Replacement Considerations

Direct substitutes must match the dual-winding architecture and 12.8x8.0mm package. Verify equivalent DC resistance and saturation current ratings. Check for compatible AEC-Q200 certification if automotive use is intended. Single-winding equivalents require circuit redesign. Ensure lead-free solderability and RoHS compliance for regulatory adherence.