
Würth Elektronik has unveiled its latest innovation in power electronics: the WE-PMFI series of Power Molded Flat-Wire Inductors. These compact components, with dimensions as small as 2.0 × 1.6 × 1.0 mm, are poised to play a pivotal role in the electrification of buses and other heavy-duty vehicles, addressing the industry's growing demand for efficient, high-performance power solutions .
Key Features and Advantages
The WE-PMFI inductors boast an exceptionally low DC resistance starting at 4.8 mΩ, enabling higher current handling capabilities—up to 16 A. Their flat-wire construction not only enhances mechanical robustness but also optimizes heat dissipation, a critical factor in automotive applications where thermal management is paramount. Operating efficiently across a wide temperature range from -55°C to +150°C, these inductors are well-suited for the rigorous demands of electric bus power systems.
Implications for the Bus Industry
As the transportation sector accelerates its shift towards electrification, the need for compact, efficient, and reliable power components becomes increasingly vital. The WE-PMFI inductors' ability to handle high switching frequencies (exceeding 1 MHz) and their compact form factor make them ideal for integration into DC/DC converters and power management systems within electric buses. Their design facilitates improved energy efficiency and reduced thermal stress, contributing to longer component lifespans and enhanced overall vehicle reliability .
Availability
Würth Elektronik's WE-PMFI series is now available in a broad range of inductance values from 100 nH to 4.7 µH. Free laboratory samples can be ordered, allowing developers and engineers in the bus manufacturing sector to evaluate and integrate these components into their designs promptly .
Conclusion
The introduction of the WE-PMFI series marks a significant advancement in power inductor technology, offering solutions that align with the evolving needs of the bus industry. By delivering high performance in a compact package, these inductors support the development of more efficient and reliable electric buses, contributing to the broader goals of sustainable and eco-friendly public transportation



