15 A fast-blow SMD fuse for 65 V rails
The Littelfuse 0451015.MRL is a 15 A fast-blow surface-mount fuse from the NANO² 451 series, rated for 65 V AC and DC circuits with a 50 A interrupting capacity at rated voltage. The 97.82 A²s melting I²t means this fuse handles moderate inrush without nuisance opening — a 15 A steady load with a capacitor bank or motor start that pulls 30 A for a few milliseconds stays within the energy budget.
Package and board integration
Housed in a 2-SMD square end block measuring 6.10 x 2.69 x 2.69 mm, the 0451015.MRL sits on the PCB with solder pads at both ends — no through-hole leads, so it reflows with the rest of the board in a standard convection oven. Supplied on tape and reel (Cut Tape also available), the part is pick-and-place ready for volume assembly. The 0.0037 Ohm DC cold resistance keeps voltage drop below 56 mV at rated current — negligible on a 65 V rail.
Thermal and compliance envelope
CSA and UL approval means the part is accepted in North American and Canadian equipment listings — a standard requirement for safety-certified power supplies and control boards.