5 A fast-blow fuse in a 0603 footprint
The Littelfuse 0467005.NRHF is a Series 467 board-mount fuse in a 0603 (1608 metric) surface-mount package. Rated 5 A at 32 V AC/DC, it provides overcurrent protection for circuits where a fast-blow response is needed to limit energy let-through to sensitive downstream components. The 35 A breaking capacity at rated voltage means the fuse safely interrupts fault currents up to that level without rupturing or sustaining an arc — critical for clearing shorts in low-voltage DC rails or secondary-side AC circuits.
Parametric fit and thermal budget
With a DC cold resistance of 0.0089 Ohms, the fuse's own voltage drop at 5 A is under 45 mV — negligible in a 32 V rail, but worth including in a low-voltage (< 5 V) power-path loss calculation. The melting I²t of 0.9 A²s is the energy required to open the fuse element. For a 5 A fuse this is a low value, consistent with the fast-blow characteristic — it lets through less energy than a time-delay fuse of the same current rating, which matters when protecting a load that has a moderate inrush (e.g., a bypass capacitor bank). Operating temperature spans -55°C to 90°C, covering most indoor and outdoor equipment environments. The fuse's current-carrying capability derates above 25°C per the manufacturer's curve — at 85°C ambient the effective rating is roughly 80 % of the 5 A nominal, so a 4 A continuous load is the practical ceiling in a warm enclosure.