Würth Elektronik introduces its new WE-SFIA series of flat-wire inductors in 2010, 2013, and 2016 packages. The inductors feature exceptionally low DC resistance and extended operating temperature range from -40°C to +180°C. The WE-SFIA series is available as catalogue components but can also be adapted to meet customer-specific requirements. 

The WE-SFIA inductors are designed for high-efficiency DC/DC converters in the automotive field, such as single- and multiphase converters, as well as buck and boost converters with high saturation currents of up to 150 A. Other filter choke applications include battery management, motor, audio, and infotainment systems.

Flat-wire technology used in the chokes offers a host of advantages: It is mechanically more robust and enables tighter, more even windings as well as improved heat dissipation. Flat-wire windings also offer a larger cross-sectional area, thus reducing electrical resistance. This results in a higher current-carrying capacity, which provides significant advantages in handling transient current peaks. AC losses, such as the skin effect, are also significantly lower in high-frequency applications than in comparable round-wire variants.

Compact and efficient

Thanks to the optimized core material, Würth Elektronik achieves improved magnetic saturation performance with its WE-SFIA inductors compared to other commercial products. The WE-SFIA product series is characterized by its compact design, high temperature resistance, and energy efficiency. This opens up new design possibilities for developers. The flat-wire inductors are available with values from 0.33 µH to 4.7 µH. Further inductance values are available on request.

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