The Littelfuse 312/318 Series Fast-Acting Fuse is designed to offer broad application requirements while providing reliable performance and cost-effective circuit protection. Constructed with a glass body, nickel-plated brass cap, and tin-plated copper leads, this fuse meets MILSTD-202G standards for terminal strength, solderability, and other critical performance characteristics. It is suitable for use in appliances and utilization equipment to provide individual protection for components or internal circuits. The fuse operates within a temperature range of -55°C to +125°C and is available with standard and short lead options.