800 mA fast-blow in a 0603 footprint
The 0603SFV075F/32-2: Rated 800 mA continuous at 32 V DC with a 50 A breaking capacity at rated voltage — the fuse clears a short-circuit fault up to 50 A without rupturing the 0603 ceramic body. The fast-blow response time means it opens quickly on moderate overcurrents, suiting it for protecting sensitive IC power rails where a slow-blow would let the silicon cook before clearing. Melting I²t is 0.0191 — this is the energy needed to melt the fuse element. For inrush-limited designs, the I²t of the fuse must exceed the I²t of the charging pulse; a 0.0191 value is typical for protecting a small DC-DC input or a peripheral supply rail in portable equipment. DC cold resistance is 0.45 Ohms — at 800 mA the voltage drop across the fuse is about 360 mV, which matters for low-voltage rails where every millivolt of headroom counts.
0603 surface-mount — board-fit and storage
Housed in a standard 0603 (1608 metric) ceramic package, 1.60 mm x 0.80 mm x 0.35 mm. The surface-mount footprint matches the common 0603 resistor/capacitor land pattern — no special pad geometry needed. Operating temperature range is -55°C to 125°C, covering automotive under-hood and industrial ambient extremes. The UL approval certifies the fuse to UL 248-14 standard for supplementary overcurrent protection.