The Littelfuse 0603SFF050FM/32-2 is a 500 mA fast-blow fuse rated at 63 VDC, with a breaking capacity of 35 A at that voltage — meaning it can safely interrupt a fault current up to 35 A without rupturing or arcing across the 0603 body. The fast-blow response and a melting I²t of 0.0029 A²s mean this fuse clears quickly on high inrush events, but the low I²t also means it may nuisance-open on capacitive loads with a large charge surge — coordinate the load's inrush energy against the I²t curve before committing the BOM line.
0603SFF050FM-32-2
Littelfuse 0603SFF050FM/32-2 SFF Fuse, 500 mA, 63 V
MPN0603SFF050FM/32-2
Obsolete
Littelfuse Inc. SFF series, 0603 (1608 Metric) surface-mount fast-blow fuse, 500 mA, 63 VDC, 35 A breaking capacity, UL recognized, Tape & Reel.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Series | SFF |
| Fuse type | Board Mount (Cartridge Style Excluded) |
| Mounting | Surface Mount |
| Voltage rating - DC | 63 V |
| Breaking capacity @ rated voltage | 35A |
| Current rating | 500 mA |
| Response time | Fast Blow |
| Operating temperature | -55°C~125°C |
| Size (Dimension) | 0.063\" L x 0.032\" W x 0.037\" H (1.60mm x 0.80mm x 0.95mm) |
| Approval agency | UL |
| Package | Tape & Reel (TR) |
| Melting i2t | 0.0029 |
| Case | 0603 (1608 Metric) |
| DC cold resistance | 0.485 Ohms |
Product details
Frequently asked questions
How can I source 0603SFF050FM/32-2?
Available through independent distribution — submit an RFQ for current availability and pricing on the specific lot quantity you need.