component
0440003.WR
Public Made by Adomby adom
Littelfuse Disposable Fuses, 1206. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 2d ago |
| viewers | 2d ago |
| 0440003-wr-etched.glb | 2d ago |
| 0440003-wr-etched.step | 2d ago |
| 0440003-wr-hero.glb | 2d ago |
| 0440003-wr-hero.overlay.json | 2d ago |
| 0440003-wr.glb | 2d ago |
| 0440003-wr.kicad_mod | 2d ago |
| 0440003-wr.kicad_sym | 2d ago |
| 0440003-wr.lbr | 2d ago |
| 0440003-wr.step | 2d ago |
| package.json | 2d ago |
| page.json | 2d ago |
| README.md | 2d ago |
0440003.WR
Littelfuse · Disposable Fuses · 1206
0440003.WR from Littelfuse, in a 1206. 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 | Fuse termination (Ag/Ni/Sn) on one end of the ceramic body; the 3 A (amp code 003.) part is rated 32 V with 50 A @ 32 V AC/DC interrupting rating, and the element is not polarized. |
| 2 | 2 | passive | Fuse termination (Ag/Ni/Sn) on the opposite end of the ceramic body; the 3 A (amp code 003.) part has 0.02252 ohm nominal resistance and 0.0742 V nominal drop at rated current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | 1206 |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating temperature | -55 | 150 | ºC | 1 | |||
| Opening Time at 25ºC, 100% of ampere rating | 4 | hours | 100% of ampere rating, 25ºC, minimum | 1 | |||
| Opening Time at 25ºC, 350% of ampere rating | 5 | secs. | 350% of ampere rating, 25ºC, maximum | 1 | |||
| Max. Voltage Rating | 32 | V | 1 | ||||
| Interrupting Rating (AC/DC) | 50 | A | @ 32 V AC/DC | 1 | |||
| Continuous operating current | 80 | % of rated current | Continuous operation, no more than 80% rated current | 1 | |||
| Peak reflow temperature | 260 | °C | Pb-free reflow; do not exceed 260°C | 2 | |||
| Wave soldering time | 10 | seconds | Wave soldering at 260°C | 2 | |||
| Nominal Resistance | 0.02252 | Ohms | Measured with <10% rated current | 1 | |||
| Nominal Melting I2t | 1.232 | A2Sec. | 1 | ||||
| Nominal Voltage Drop At Rated Current | 0.0742 | V | At rated current after temperature has stabilized | 1 | |||
| Nominal Power Dissipation At Rated Current | 0.223 | W | At rated current | 1 | |||
| Ampere Rating | 3 | A | Amp code 003. | 1 |
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 | tin | Terminations: Ag / Ni / Sn (100% Lead-free) Element Cover Coating: Lead-free Glass | 3 |
CAD (KiCad official)
- Symbol:
0440003.WR - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
0440003-wr-etched.step/0440003-wr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);0440003-wr.step/0440003-wr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (3 pp, sha256
39359c45db276d92, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).