Sizing this 1.5 A fast-blow fuse for a 32 V DC rail
The F1206A1R50FWTR is a 1.5 A fast-blow fuse rated for 32 V DC, from the KYOCERA AVX Accu-Guard® series. It comes in a standard 1206 (3216 metric) SMD package, making it a drop-in fit for many existing board layouts that already use 1206 chip fuses. The 0.11 Ohm cold resistance means at 1.5 A the voltage drop is about 0.165 V — negligible for most 12 V or 24 V rails, but worth checking if your load is sensitive to supply droop.
Melting I²t and inrush survival
With a melting I²t of 0.02, this fuse is designed to open quickly on a hard short, but it will tolerate brief inrush pulses from capacitive or inductive loads. For a 1.5 A rail, a 100 µF input capacitor at 24 V stores about 29 mJ — the fuse's I²t budget handles that comfortably without nuisance trips.
Breaking capacity and safety approvals
The breaking capacity is 50 A at the rated voltage — sufficient for most low-voltage DC supplies, but if your source can deliver more than 50 A into a short, you need a current-limiting upstream breaker or a higher-interrupt fuse. It carries cUL and UL approval, which simplifies safety certification for end products sold in North America.