74485540290

Arrays, Signal Transformers Overview

The Würth Elektronik 74485540290 is a dual coupled inductor from the WE-CFWI series, featuring a composite iron powder core and flatwire construction. It offers an inductance of 2.9 µH with a ±20% tolerance. The component supports a maximum DC current of 17 A in parallel configuration and 8.5 A in series. The parallel DC resistance is 5.6 mΩ (max), while the series resistance is 11.6 µH. Dimensions are 15.5 mm x 13.2 mm x 10.5 mm, operating between -40°C and +150°C.

Arrays, Signal Transformers Feature Summary

• Utilizes composite iron powder core technology for high saturation performance.
• Employs flatwire winding to minimize AC losses and improve thermal efficiency.
• Provides flexible circuit design options through selectable series or parallel connection modes.

Arrays, Signal Transformers Applications

• High power switching regulators
• Flyback converters
• Buck converter stages
• Boost converter stages
• SEPIC converter topologies

Arrays, Signal Transformers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and tolerance specifications. Confirm that the selected variant matches the required current rating and inductance value for the target application. Cross-reference the RoHS compliance status and lead times directly with authorized distributors prior to finalizing procurement orders.

Arrays, Signal Transformers Selection Notes

Select this component when designing isolated or non-isolated power supplies requiring tight magnetic coupling and high current density. Evaluate the thermal management requirements based on the 17 A parallel current rating. Ensure the PCB footprint accommodates the 15.5 mm x 13.2 mm package dimensions and allows for adequate spacing around the SMD terminals.

Arrays, Signal Transformers Part Context

This part belongs to the WE-CFWI series of shielded, dual-coupled inductors designed for high-efficiency power conversion. The series emphasizes low profile and high current handling capabilities suitable for modern compact power electronics. It complements other Würth inductor families by offering specialized coupled configurations for advanced converter topologies.

Arrays, Signal Transformers Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with existing designs before considering alternative components from different manufacturers.

Arrays, Signal Transformers FAQ

What is the difference between the parallel and series inductance values?

In parallel configuration, the inductance is 2.9 µH with a higher current rating of 17 A. In series configuration, the inductance increases to 11.6 µH with a lower current rating of 8.5 A.

What core material is used in this inductor?

The 74485540290 uses a composite iron powder core, which provides stable inductance characteristics under high DC bias conditions.