AEC-Q200-qualified fuse series for high-voltage automotive applications

Littelfuse, Inc. has released its new 823A Series Fuse, an AEC-Q200-qualified, high-voltage-rated SMD fuse with high interrupting ratings. Designed to satisfy the stringent demands of modern automotive applications, the series offers a compact 5mm x 20mm footprint while delivering excellent overcurrent protection for 1000VDC systems.

“The 823A Series is the first and only small-size SMD fuse from Littelfuse rated for 1000 Vdc,” said Daniel Wang, senior director of Littelfuse EBU Global Product Management – OC Business. “This groundbreaking product delivers reliable performance in harsh automotive environments, providing engineers with a compact, robust solution for the next generation of high-voltage applications.”

The series stands out for its innovative wire-in-air design, resulting in superior temperature stability, high interrupting ratings (100A @ 1kV DC), and a high I²t value in a small form factor.

The enhanced system protection prevents nuisance opening caused by high inrush and surge currents. The optimised PCB layout provides a space-saving design facilitating integration into compact automotive electronics. High Voltage Resilience provides reliable protection against overcurrent events in high-voltage environments. The series is tailored for primary circuit protection in automotive electronics.

The 823A Series suits automotive and industrial applications, including BMS, BDU, high-voltage DC-DC converters, and automotive fuel cell cooling systems. These features make it indispensable for engineers designing EVs and other advanced automotive systems.