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Published
13 June 2025
Written by Harry Forster
At PCIM 2025, YAGEO showed us how their YAGEO common mode chokes are tackling one of the automotive world’s messiest problems: electromagnetic interference (EMI). The solution? A new nanocrystalline material that delivers higher permeability and smaller core sizes—meaning compact filters that still meet high-performance EMI standards, especially in high-temperature environments.
These YAGEO common mode chokes are built for the increasingly electrified vehicle. Whether you’re designing for electric power steering, AC compressors, or onboard chargers, today’s under-the-hood systems are becoming electronic-heavy and noisy. The result? A huge demand for compact, high-temperature EMI suppression.
That’s where the nano-crystal material comes in. Traditional ferrite cores leave a lot of air gaps during manufacturing. YAGEO’s nanocrystalline cores, however, feature much smaller particle sizes—think golf balls vs. footballs—allowing for tighter packing and better magnetic permeability. This is the key to miniaturising the chokes while boosting performance.
For engineers, the advantages of YAGEO common mode chokes go beyond footprint. You also reduce copper windings, lower ESR, and cut overall losses. These chokes are rated up to 150 °C, making them ideal for under-hood environments where temperature resilience is critical. Less wire, less loss, better thermal tolerance—what’s not to love?
YAGEO is also embracing flexibility. If the exact value you need isn’t in the standard lineup, they offer custom choke designs—altering winding turns, adjusting characteristics, and delivering engineer-specified performance for EMI-critical systems. This ability to tweak the spec is a game-changer when dealing with evolving designs or integration challenges.
So, where are these chokes headed next? Expect adoption in automotive EMI filters, mild hybrid systems, and high-frequency noise suppression across power electronics. If you’re working with compact layouts, high thermal loads, or compliance headaches, YAGEO common mode chokes might just be the drop-in solution you’ve been waiting for.
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