Electric vehicle power systems are demanding tougher, more compact protection devices as voltages rise and board space shrinks. Littelfuse has introduced the 828 and 827 Series High Voltage Cartridge Fuses, marking the first AEC-Q200-compliant fuses rated up to 1,000 VDC (828 Series) and 800 VDC (827 Series).
These new fuses are designed with the needs of Onboard Chargers (OBCs) and Power Distribution Units (PDUs) in mind — places where reliability, thermal endurance, and compact footprints are mission-critical.
Technical Highlights
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High Voltage Ratings: 1,000 VDC (828 Series) and 800 VDC (827 Series)
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Interrupting Capacity: 10 kA at rated voltage for both series
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Operating Range: -55°C to 125°C, suitable for harsh EV environments
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Flexible Mounting: Through-hole or bolt-down, with integrated ISO terminals and stand-off leads
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Standards Compliance: AEC-Q200, RoHS, Halogen Free, 100% Pb-Free
The fuses are engineered to simplify integration by eliminating the need for extra mounting hardware or complex lead forming. This reduces design overhead while preserving valuable PCB real estate.
Why These Fuses Matter
EV electronics increasingly rely on higher-voltage architectures to reduce current and improve efficiency, but that also raises the stakes for circuit protection. The new Littelfuse fuses deliver automotive-grade reliability at voltage levels where options have been limited.
For engineers, the combination of compact size, flexible mounting, and AEC-Q200 compliance provides a straightforward path to meeting safety requirements without compromising design freedom.
Target Applications
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Onboard Chargers (OBCs)
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Power Distribution Units (PDUs)
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High-voltage EV subsystems
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Other automotive electronics requiring compact high-voltage protection
By extending its fuse portfolio into the 800–1,000 VDC range with AEC-Q200 compliance, Littelfuse is giving design engineers new tools to build safer and more efficient EV power systems.
