5 A at 32 V DC — obsolete, sourced per RFQ
The Littelfuse 0603SFS500F/32-2 is a 5 A, 32 V DC slow-blow fuse in the SFS series, housed in a 0603 (1608 Metric) surface-mount package. Its 50 A breaking capacity at rated voltage means it safely interrupts a short-circuit fault up to that level without rupturing the package — a critical margin for secondary-side protection in DC power rails.
Melting I²t and inrush handling
With a melting I²t of 3.2, this fuse tolerates the repetitive inrush current of a capacitive input filter or a DC-DC converter startup without nuisance opening — the energy required to melt the element is high enough to ride through a typical 10–20 ms charging pulse. The 0.013 Ohm DC cold resistance keeps voltage drop under 65 mV at full rated current, which matters for low-voltage rails where every millivolt of headroom counts.
Temperature range and UL recognition
UL recognition confirms the fuse has passed the UL 248-14 standard for supplementary protectors, covering overcurrent protection in equipment where the branch circuit is already protected.
Sourcing an obsolete SFS fuse
Littelfuse lists this part as Obsolete.