The Littelfuse 0603SFF300FM/32-2 is a fast-blow SFF series fuse rated 3 A continuous at 32 VDC with a breaking capacity of 35 A at that voltage — it safely interrupts a fault up to 35 A without rupturing the package. Melting I²t of 0.19 means the fuse clears quickly on a hard short but tolerates brief inrush pulses from capacitive or inductive loads without nuisance opening — a key parameter when the protected circuit has a startup surge.
Housed in a 0603 (1608 Metric) SMD package — 1.60 mm x 0.80 mm x 0.95 mm — it fits the standard 0603 footprint with no pad modification needed for the 32 VDC rating. UL approval means the fuse is accepted for North American equipment certification without additional component-level testing.
No official successor order code is recorded; the SFF series has been replaced by newer Littelfuse 0603 fast-blow families, but pin-compatible drop-in availability must be confirmed against the BOM's current and I²t requirements.