Littelfuse, an industrial technology manufacturing company shaping solutions for the safe and efficient transfer of electrical energy, announced the NANO2 Surface-Mount 708 Series Fuse, the first Littelfuse surface-mount fuse offering a 14000 A interrupting rating at 80 VDC.
Engineered for next-generation 48 VDC power architectures, the 708 Series addresses the growing protection demands of AI servers, hyperscale data centers, and high-density power distribution systems. As power levels rise and board space shrinks, designers have been forced 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 (60 A to 200 A) with an industry-leading interrupting rating in a compact surface-mount package. This enables designers to protect circuits exposed to high fault currents while optimizing layout efficiency and enabling fully automated assembly processes. “With this new fuse—our first Littelfuse surface-mount fuse to deliver a 14000 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,” said Daniel Wang, Senior Director of Product Management, Over Current–Passives, at Littelfuse. “That shift enables automated manufacturing, improves productivity, and reduces overall system cost.”
The NANO² SMD 708 Series fuses are an industry-leading 14 kA interrupting rating at 80 VDC that supports high fault current environments, a high-current capability ranging from 60 A to 200 A for demanding power applications, and a compact surface-mount footprint that enables space savings and supports high-density designs. The fuse also features automation-ready assembly that eliminates the manual installation associated with legacy fuse formats, along with robust performance characterized by 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 particularly well-suited for AI server clusters, networking equipment, and hyperscale data center infrastructure. Additional applications include renewable energy systems and battery management systems (BMS), where compact, high-power protection solutions are critical. The 708 Series is part of a broad Littelfuse portfolio of 48 V protection solutions for data center infrastructure, complementing existing fuse families including the 456, 871, and 881 Series.
Click here to learn more about the 708 Series.
