Littelfuse Launched New Aviation Power Diodes
The company introduced the AK-FL Series to protect high-voltage aircraft power systems from surges.
Updated on Oct. 1, 2026 in Air Travel
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Littelfuse has released its new AK-FL Series of TVS diodes, specifically engineered to defend high-voltage DC aviation architectures from transient overvoltage events. The components utilize proprietary FlatSuppressX technology to support system safety.
Why it matters
These diodes provide essential protection for modern aviation power systems, helping engineers maintain consistent voltage levels and prevent damaging latch-up incidents in power controllers. They are designed to withstand the rigorous environmental and safety demands of the aerospace sector.
The AK-FL Series is designed for 270V to 800V DC aviation power architectures with current ratings of 6kA, 8kA, and 10kA at an 8/20µs surge duration. Each component is manufactured using halogen-free materials.
The players
Littelfuse
Littelfuse is a global manufacturer of circuit protection, power control, and sensing technologies for the automotive, industrial, and electronics industries.
The details
Engineers can utilize these diodes to achieve a near-constant, low clamping voltage through an advanced foldback I-V characteristic. This capability is critical for preventing electrical latch-up within Solid-State Power Controller modules during transient spikes.
Timeline
Littelfuse announced the availability of the AK-FL Series on October 1, 2026.
Roadmap
The introduction of the AK-FL Series reflects the ongoing industry trend of transitioning toward higher-voltage DC power architectures in next-generation aircraft. By focusing on specialized, high-capacity protection, Littelfuse is positioning itself to support the critical power demands of modern aerospace designs.
While these components are strictly for industrial and engineering use, their implementation helps ensure the reliability of electronic power controllers in aircraft. This focus on component-level durability contributes to the long-term safety and maintenance standards of the global aviation fleet.
The takeaway
These high-voltage diodes highlight how specialized engineering components are essential for the safe transition to more complex electrical systems in aviation. Reliability in these power architectures is fundamental to preventing operational failures in modern flight hardware.
Further reading
For more information on the evolving standards and technologies shaping the industry, visit our Air Travel section.
Source note: This article includes information reported by Electronic Specifier.
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