SRF1280A-102M

Overview

The Bourns SRF1280A-102M is a shielded dual-winding power inductor array designed for surface-mount applications. It features a ferrite core and wirewound construction within a 12.5 mm x 12.5 mm x 8.00 mm package. The component offers an inductance of 1 mH per coil with ±20% tolerance. Key electrical parameters include a maximum DC resistance of 1.992 Ohms (parallel) and saturation currents of 1.14 A (parallel) or 571 mA (series). It operates between -40°C and +125°C and holds AEC-Q200 qualification.

Feature Summary

• Dual-winding configuration supporting series, parallel, and transformer connections
• Magnetically shielded design to minimize radiation
• AEC-Q200 qualified for automotive reliability

Applications

• Automotive electronics systems
• DC-DC converter circuits
• Power supply filtering

Procurement Notes

Verify the specific suffix 'A' against the original design specification, as it denotes the automotive-grade variant. Confirm that the dual-coil array format aligns with the circuit topology requirements. Ensure the footprint dimensions match the PCB layout constraints. Check RoHS compliance status if required by local regulations. Validate the manufacturer part number directly with Bourns documentation before ordering.

Selection Notes

Select this component when a compact, shielded dual-inductor solution is required for space-constrained designs. The AEC-Q200 rating makes it suitable for automotive environments. Consider the parallel connection mode for higher current handling needs. Evaluate the series connection mode if higher total inductance is necessary. Ensure the operating temperature range meets the system's thermal profile.

Part Context

This part belongs to the SRF1280A series of dual-winding shielded power inductors from Bourns. The series is characterized by its small 4949 footprint and high-performance magnetic shielding. These components are engineered for high-frequency switching applications where electromagnetic interference reduction is critical.

Replacement Considerations

Direct substitutes must be dual-winding arrays with identical 12.5x12.5mm footprints and 1mH nominal inductance. Verify that any replacement also carries AEC-Q200 certification for automotive use. Ensure the replacement maintains similar saturation current ratings and DC resistance values.