Littelfuse 464 Series NANO2 Surface Mount FusesLittelfuse 464 series NANO2 surface mount fuses are small high current devices designed to support higher current requirements of various applications. The 464 series of surface mount fuses are also fully compatible with lead free solder alloys and higher temperature profiles associated with lead free assembly, allowing for greater flexibility and ease of use.Very fast actingSmall sizeSurface Mount TechnologySurface mount fuses offer considerable space (and time) saving features for low voltage applications. The FF types are ideal for protection of high value silicon IC's e.g. alarm systems, audio/visual equipment, computer boards, portable telephones, power supplies, medical apparatus etc.