250 mA fast-blow in a 0603 footprint
The Littelfuse 0467.250NRHF is a 250 mA fast-blow surface-mount fuse in the 467 series, housed in a 0603 (1608 Metric) concave package. Rated for 32 V on both AC and DC rails, it clears overcurrent events up to 50 A at that voltage — the breaking capacity covers most low-voltage auxiliary supplies and control circuits without requiring an upstream current-limiting device. The fast-blow response means it opens quickly on moderate overloads, protecting sensitive semiconductor loads where a slow-blow part would let the fault ride through. Melting I²t is 0.0014 A²s, so the energy let-through stays low enough to keep downstream traces and bond wires intact during a short-circuit event.
0603 concave body, 1.60 mm x 0.81 mm x 0.31 mm — the low profile clears tight enclosures and the concave terminations allow good solder-fillet inspection on the side walls. DC cold resistance is 0.565 Ohms, so at 250 mA the voltage drop is about 140 mV — negligible for a 32 V rail but worth checking if the fuse sits in a low-voltage sensor supply where every millivolt counts. Surface-mount only, supplied on tape and reel or cut tape. The 0603 footprint matches standard solder-paste stencil apertures; no special reflow profile needed beyond the standard SAC305 curve. Operating temperature range is -55°C to 90°C, so it handles the thermal cycling of outdoor or industrial enclosures without derating the current.