SRF1260-101M

Overview

The Bourns SRF1260-101M is a dual-winding shielded power inductor from the SRF1260 series, designed for surface-mount applications. It features a ferrite core and measures 12.5 mm x 12.5 mm x 6 mm. The nominal inductance per coil is 100 µH with a ±20% tolerance. Key electrical parameters include a maximum DC resistance of 0.171 Ω and a rated current of 1.78 A. The device operates within a temperature range of -40°C to +125°C.

Feature Summary

• Dual-winding configuration enables coupled inductor functionality for synchronous rectification or interleaved converter topologies.
• Magnetically shielded construction minimizes electromagnetic interference and reduces sensitivity to adjacent components.
• High saturation characteristics support stable performance under high-current conditions typical in power supply designs.

Applications

• Synchronous buck converters
• Interleaved DC-DC power stages
• Point-of-load (POL) voltage regulation modules

Procurement Notes

Verify the specific suffix 'M' confirms the ±20% tolerance variant. Confirm RoHS compliance status matches current manufacturing standards. Ensure the package dimensions align with the target PCB footprint. Validate thermal requirements against the specified operating temperature range.

Selection Notes

Select this component when a compact, shielded dual-inductor solution is required for high-efficiency power conversion. The 1260 footprint balances size and current handling capabilities. Consider the 100 µH value relative to the switching frequency and desired ripple current specifications.

Part Context

This part belongs to the SRF1260 series of dual-winding shielded power inductors manufactured by Bourns. The series offers various inductance values within the same mechanical envelope, allowing designers to standardize footprints across different power supply designs while adjusting electrical characteristics.

Replacement Considerations

Direct substitutes within the same series include other SRF1260 variants with different inductance values but identical physical dimensions and shielding characteristics. Verify that alternative part numbers maintain the same dual-winding configuration and current ratings.

FAQ

What is the inductance value when the two coils are connected in parallel?

When connected in parallel, the effective inductance is approximately 25 µH, assuming ideal coupling and negligible leakage inductance.

Is the SRF1260-101M suitable for automotive applications?

While the component meets general industrial specifications, specific automotive qualification requires verification against AEC-Q200 standards, which are not explicitly confirmed for this general-purpose part number in standard datasheets.