Obsolete, but still spec'd into BOMs
The Littelfuse 1206SFF600F/24-2 is a 6 A, 24 VDC fast-blow surface-mount fuse in the 1206 (3216 Metric) package, part of the SFF series. It is officially listed as obsolete by the manufacturer. With a DC cold resistance of 0.013 Ohms and a melting I²t of 1, this fuse is designed for board-level overcurrent protection where a fast response to fault currents is critical.
Breaking capacity and temperature range
Rated breaking capacity is 45 A at 24 VDC — meaning it can safely interrupt a fault current up to that level without rupturing or sustaining an arc. This is a key parameter for DC power rail protection in embedded systems.
Sourcing an obsolete SFF fuse
For BOM lines that still call out this order code, independent distribution and surplus channels remain the supply path.