5A 125V 125V Fuse Board Mount (Cartridge Style Excluded) Surface Mount 2-SMD, Square End Block The 0451005.MR is a surface-mount (SMD) board-level fuse from Littelfuse, part of the NANO²® 451 series, designed to provide overcurrent protection in compact electronic circuits.

It is a fast-acting fuse used to protect sensitive components from damage caused by short circuits or overload conditions, especially in high-density PCB designs. Key Features Type: Surface-mount chip fuse Designed for PCB mounting (2-SMD package) Current Rating 5 A nominal current Voltage Rating 125 V AC / 125 V DC Fast-Acting Response Quickly interrupts fault currents to protect circuitry Compact Size Approx. 6.10 mm × 2.69 mm × 2.69 mm Ideal for space-constrained PCB designs High Breaking Capacity Around 50 A interrupt rating Wide Operating Temperature -55°C to +125°C Construction Ceramic body for high thermal and mechanical stability Mounting Type Surface mount (SMD), suitable for automated PCB assembly Agency Approvals UL, CSA, PSE certified (varies by variant)