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The Littelfuse 0451005.MRL is a 5A 125V fast blow surface mount fuse from the 451 series. It features a very fast-acting Wire-in-Air construction designed for secondary side overcurrent protection in compact electronic circuits. The fuse is rated for 5A continuous current at 125VAC/VDC with a breaking capacity of 50A at rated voltage. Its melting I²t is 5.566 A²sec, suitable for applications requiring precise coordination.
This fuse is housed in a 2-SMD square end block package measuring 6.10mm x 2.69mm x 2.69mm, making it ideal for space-constrained PCB designs. It operates over a wide temperature range of -55°C to 125°C. The component is RoHS compliant and halogen free, and carries approvals from CSA, PSE, and UL, ensuring reliability and safety in various markets.
Typical applications include notebook PCs, LCD TVs, power supplies, telecom systems, and battery charging circuits. The surface mount format supports automated assembly, reducing manufacturing costs and improving throughput.
The fuse is rated for 5 A continuous current.
The voltage rating is 125 V AC/DC.
The breaking capacity is 50 A at rated voltage (125 V).
It is a fast blow (very fast-acting) fuse.
It comes in a 2-SMD, square end block surface mount package.
The operating temperature range is -55°C to 125°C.
It is approved by CSA, PSE, and UL.