Industry-first 14 kA interrupting rating at 80 VDC in a compact surface-mount package
Littelfuse, an industrial technology manufacturing company shaping solutions for the safe, efficient transfer of electrical energy, is launching the NANO2 Surface-Mount 708 Series Fuse, the first Littelfuse Surface-Mount 708 Series Fuse, the first Littelfuse surface-mount fuse offering a 14,000 A interrupting rating at 80 VDC
Designed for next-generation 48 VDC power architectures, the 708 Series addresses the protection demands of AI servers, hyperscale data centres, and high-density power distribution systems. As power levels rise and board space shrinks, designers have to rely on oversized, manually installed through-hole or bolt-down fuses. The 708 Series provides a compact, automation-friendly alternative without compromising performance.
The NANO2 708 Series combines high current ratings with an industry-leading interrupting rating in a compact surface-mount package, enabling designers to protect circuits exposed to high fault currents while optimising layout efficiency and facilitating fully automated assembly processes.
Daniel Wang, senior director of Product Management, Over Current–Passives, at Littelfuse, said, “With this new fuse, our first Littelfuse surface-mount fuse to deliver a 14,000 A interrupt rating at 80 VDC, we’re giving designers using legacy through-hole or bolt-down solutions a path to transition to surface-mount technology. That shift enables automated manufacturing, improves productivity, and reduces overall system cost.”
Features and benefits include:
- Industry-leading interrupting rating: 14 kA at 80 VDC, supporting high fault current environments
- High current capability: 60 A to 200 A range for demanding power applications
- Compact surface-mount footprint: Enables space savings and supports high-density designs
- Automation-ready assembly: Eliminates manual installation associated with legacy fuse formats
- Robust performance: High pulse resistance and compliance with global safety standards
The 708 Series is designed as supplemental overcurrent protection for circuits where high fault current is anticipated, including power distribution units (PDUs), power shelves, battery backup units (BBUs), and power supply units (PSUs). It is suitable for AI server clusters, networking equipment, and hyperscale data centre infrastructure.
Additional applications include renewable energy systems and battery management systems (BMS), where compact, high-power protection solutions are essential.
The 708 Series is part of a broad Littelfuse portfolio of 48V protection solutions for data centre infrastructure, complementing existing fuse families including the 456, 871, and 881 Series.
