SRF1260-221M

Overview

The Bourns SRF1260-221M is a dual-winding shielded power inductor from the SRF1260 series, designed for surface-mount applications. It features an inductance of 220 µH with a tolerance of ±20%. The component utilizes a ferrite core and offers a maximum DC resistance of 0.354 ohms when configured in parallel. Electrical ratings include a saturation current of 1.51 A and an RMS current of 1.19 A in parallel mode. The package dimensions are 12.5 mm x 12.5 mm x 6 mm, suitable for compact circuit designs.

Feature Summary

• Dual-winding architecture supporting parallel or series configurations
• Magnetically shielded structure to minimize radiation
• Ferrite core construction for stable performance
• Surface-mount design for automated assembly

Applications

• DC-DC converter circuits
• Power supply filtering stages
• Signal processing interfaces requiring coupled inductance

Procurement Notes

Verify the specific datasheet version and RoHS compliance status directly with the manufacturer or authorized distributors before finalizing procurement decisions. Ensure that the ordering suffix matches the required packaging format, such as cut tape or full reel, to align with production line requirements. Confirm lead times and availability through official channels to mitigate supply chain risks.

Selection Notes

Select this component when a shielded dual-inductor solution is required for space-constrained power electronics. Evaluate the parallel versus series configuration needs against the available saturation and RMS current limits. Ensure the operating temperature range of -40°C to +125°C meets the environmental specifications of the target application.

Part Context

The SRF1260-221M belongs to the SRF1260 series of coupled inductors manufactured by Bourns Inc. This series is characterized by its low-profile surface-mount package and magnetic shielding capabilities. The components are engineered to provide reliable performance in various power management applications while maintaining electromagnetic compatibility standards.

Replacement Considerations

Consult official Bourns documentation for verified substitute part numbers within the SRF1260 series or compatible families. Cross-reference electrical parameters such as inductance, current ratings, and physical dimensions to ensure functional equivalence without modifying the existing PCB layout.