1.5 A fast-blow in a 0603 footprint
The Littelfuse 0603SFF150F/32-2 is a 1.5 A, 32 V DC rated fast-blow fuse in the standard 0603 (1608 metric) chip package. It carries a 35 A breaking capacity at the rated voltage, meaning it can safely interrupt a short-circuit fault up to that current without rupturing the package or sustaining an arc.
Obsolete — sourced through independent channels
Littelfuse has marked the 0603SFF150F/32-2 as obsolete.
Electrical characteristics that govern the fit
The cold resistance is 0.07 Ω, which sets the I²R self-heating at rated current — about 0.16 W in still air. The melting I²t of 0.03 A²s is the energy needed to open the element; a downstream circuit with a peak inrush below this threshold will not nuisance-blow the fuse on start-up.
UL approval and temperature envelope
The SFF series carries UL recognition, which streamlines acceptance in UL 508A panels and other North American equipment listings. The operating temperature range spans -55 °C to 125 °C, covering both cold-start conditions and the ambient near a hot power supply without derating the current below the 1.5 A mark.