The 1206SFP700F/24-2 is a 7 A surface-mount fuse in Littelfuse's SFP series, rated for 24 VDC with an 80 A interrupting capacity at that voltage. The 80 A breaking capacity means the fuse can safely clear a fault current up to that level without rupturing the 1206 ceramic body — critical for DC bus protection where the prospective short-circuit current from a bank of capacitors can exceed 50 A even at low voltage. The melting I²t is 30 A²s, which governs how the fuse coordinates with downstream semiconductors or PCB traces — a 7 A nominal fuse with this I²t will let through enough energy to blow a 4 oz copper trace at 0.5 mm width if the fault is hard, so the PCB designer needs to check the trace fusing curve against this value.
The DC cold resistance is 0.01 ohms, so at 7 A the self-heating I²R loss is 0.49 W — the 1206 pad on a standard FR4 board must have adequate copper area to keep the fuse body below the 125 °C operating limit. Supplied in Tape & Reel (TR) or Cut Tape (CT) packaging, the fuse is pick-and-place compatible with standard 8 mm tape pitch for the 1206 form factor.
Lifecycle reality for procurement
Littelfuse has marked the 1206SFP700F/24-2 as Obsolete. For existing BOM lines that require this exact part number, sourcing runs through independent distribution and surplus channels.
Temperature rating and deployment context
The operating temperature range spans -55 °C to 125 °C, covering industrial and some automotive under-hood environments. The 24 VDC rating suits it for automotive 12 V/24 V systems, telecom -48 VDC power feeds, and battery-protection circuits where the nominal bus voltage stays under 24 V.