The 1206SFF800F/24-2: No official successor is listed by Littelfuse for this order code. A board spin or a parametric search for a 1206 fast-blow 8 A 24 V DC fuse with a 45 A breaking capacity is the practical replacement path.
8 A fast-blow in a 1206 footprint
Rated 8 A continuous at 24 V DC, this SFF-series fuse clears faults up to 45 A — the breaking capacity at the rated voltage. The 0.008 Ohm DC cold resistance keeps I²R losses low in a 1206 package that sits 1.10 mm above the board. Fast-blow response means it opens quickly on moderate overloads — the 2.5 A²s melting I²t gives a feel for the energy needed to clear the element. A downstream circuit with an inrush current above this threshold will nuisance-blow unless the pulse energy stays under the I²t rating.
Board-fit and compliance
The tape-and-reel or cut-tape packaging suits pick-and-place assembly.