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0805L075WR

Littelfuse · Resettable Fuses · 0805

0805L075WR from Littelfuse, in a 0805. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 1 passive One terminal of the 0805L075 resettable PTC (solder-plated copper end terminal, non-polarised, Ihold 0.75 A, Itrip 1.50 A, Vmax 6 Vdc, Imax 40 A).
2 2 passive Second terminal of the 0805L075 resettable PTC (non-polarised, interchangeable with the other terminal, Ihold 0.75 A, Itrip 1.50 A, Vmax 6 Vdc, Imax 40 A).

Key specifications

Parameter Value
Manufacturer Littelfuse
Package 0805
Category Circuit Protection
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Hold current (maximum current passed without tripping) I hold 0.75 A 20°C still air 1
Trip current (minimum current at which device trips) I trip 1.5 A 20°C still air 1
Minimum resistance (initial, un-soldered) R min 0.09 Ω Initial (un-soldered) state 1
Maximum resistance one hour after tripping or reflow R 1max 0.35 Ω 20°C, measured one hour after tripping or reflow soldering at 260°C for 20 sec 1
Maximum voltage device can withstand without damage at rated current V max 6 Vdc At rated current (I max) 1
Maximum fault current device can withstand without damage I max 40 A At rated voltage (Vmax) 1
Power dissipated in tripped state P d 0.6 W Tripped state, 20°C still air 1
Maximum time to trip 0.2 s At 8.00 A fault current 1
Operating/storage temperature -40 85 °C Operating/storage 3
Maximum device surface temperature in tripped state 125 °C Tripped state 3
Passive aging resistance change (typical) -5 5 % Passive aging +85°C, 1000 hours; typical resistance change 3
Humidity aging resistance change (typical) -5 5 % Humidity aging +85°C, 85% R.H., 1000 hours; typical resistance change 3
Thermal shock resistance change (typical) -30 % MIL-STD-202 Method 107, +85°C/-40°C 20 times; typical resistance change 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts Copper Terminal Material Solder-Plated Copper 3

CAD (KiCad official)

  • Symbol: 0805L075WR
  • Footprint: Fuse:Fuse_0805_2012Metric
  • 3D model: 0805 (KiCad packages3D, STEP)
  • 3D model files: 0805l075wr-etched.step / 0805l075wr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 0805l075wr.step / 0805l075wr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Littelfuse datasheet (5 pp, sha256 704fa70dbeb37bfa, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF