SRF1280A-101M

Overview

The Bourns SRF1280A-101M is a dual-winding shielded power inductor from the SRF1280A series. It features an inductance of 100 µH with ±20% tolerance and a DC resistance of 0.175 Ω per winding. The component supports a saturation current of 3.64 A and a thermal current rating of 1.96 A. It utilizes ferrite core material and operates within a temperature range of -40°C to 125°C. The device is housed in a surface-mount package measuring 12.5 mm x 12.5 mm x 8.0 mm.

Feature Summary

• Dual-winding configuration supporting parallel, series, and transformer applications
• Magnetically shielded design for low radiation emission
• High saturation current capability for power handling

Applications

• Parallel connection circuits
• Series connection circuits
• Transformer configurations

Procurement Notes

Verify the specific suffix 'A' in the part number SRF1280A-101M against official Bourns documentation to confirm magnetic shielding and electrical characteristics. Ensure the ordering quantity matches the tape and reel packaging requirements specified by the manufacturer. Cross-reference the datasheet revision date to validate parameter accuracy before integration into designs.

Selection Notes

Select this component when dual independent windings are required for coupled or uncoupled power stages. The 100 µH value suits filtering applications requiring moderate energy storage. Verify that the 1.96 A thermal limit and 3.64 A saturation limit meet the circuit's peak and continuous current demands. Confirm footprint compatibility with the 12.5 mm x 12.5 mm SMD land pattern.

Part Context

This component belongs to the SRF1280A series of dual-winding shielded power inductors manufactured by Bourns Electronic Solutions. The series offers inductance values ranging from 0.47 µH to 1000 µH. These devices are designed for high-current power supply applications where magnetic isolation and compact form factors are critical for system performance.

Replacement Considerations

Consult Bourns official substitution guides for equivalent dual-winding shielded inductors. Verify that any alternative part maintains the 12.5 mm x 12.5 mm footprint and 100 µH nominal inductance with compatible current ratings.