443LC 280VAC NANO2 Subminiature SMD Fuses Littelfuse 443LC NANO2® Subminiature SMD Fuses are small square surface mount fuses with 280VAC voltage rating. The 443LC series is fully compatible with lead-free solder alloy and higher temperature profiles associated with lead-free assembly. These fuses are available in 0.50A - 5.00A. Typical applications include AC/DC power adapters, telecom equipment system power, portable system built-in AC/DC converters, high voltage DC/DC converters, lighting systems, and LED lighting.