The 1206SFS200F/63-2: Rated 2 A at 63 VDC with a slow-blow response, this fuse is sized for circuits where inrush current exceeds the steady-state load — a DC power input with bulk capacitance, for example. The 50 A breaking capacity at the rated voltage means it can safely interrupt a fault current up to that level without rupturing the 1206 ceramic body. Melting I²t is 0.63 A²s, and the cold DC resistance is 0.088 ohms — both figures a design engineer uses to verify the fuse will not nuisance-blow during the expected surge profile.
Board-level environment and approvals
Operating temperature range is -55 °C to 125 °C, covering most industrial and automotive under-hood ambient conditions. UL approved — the fuse carries a recognized component mark, which simplifies the safety certification of the end equipment in North American markets.