component
04381.25WR
Public Made by Adomby adom
Littelfuse Disposable Fuses, 0603. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 2d ago |
| viewers | 2d ago |
| 04381-25wr-etched.glb | 2d ago |
| 04381-25wr-etched.step | 2d ago |
| 04381-25wr-hero.glb | 2d ago |
| 04381-25wr-hero.overlay.json | 2d ago |
| 04381-25wr.glb | 2d ago |
| 04381-25wr.kicad_mod | 2d ago |
| 04381-25wr.kicad_sym | 2d ago |
| 04381-25wr.lbr | 2d ago |
| 04381-25wr.step | 2d ago |
| package.json | 2d ago |
| page.json | 2d ago |
| README.md | 2d ago |
04381.25WR
Littelfuse · Disposable Fuses · 0603
04381.25WR from Littelfuse, in a 0603. 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 | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| Package | 0603 |
| 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 |
|---|---|---|---|---|---|---|---|
| Opening time at 100% of ampere rating (minimum) | 4 | hours | 100% of ampere rating; opening time at 25ºC | 1 | |||
| Opening time at 250% of ampere rating (maximum) | 5 | seconds | 250% of ampere rating; opening time at 25ºC | 1 | |||
| Max. voltage rating | 63 | VDC | 1 | ||||
| DC interrupting rating | 50 | A | 63VDC; DC rating tested at rated voltage with time constant < 0.8 msec | 1 | |||
| Operating temperature | -55 | 150 | °C | Operating temperature range | 1 | ||
| Continuous operating current | 80 | % of rated current | Devices operated continuously; standard 20% re-rating applies additionally | 1 | |||
| Nominal resistance | 0.2 | Ohms | Measured with < 10% rated current | 1 | |||
| Nominal melting I2t | 0.051 | A2Sec. | Measured at 1 msec. opening time | 1 | |||
| Nominal voltage drop at rated current | 0.365 | V | Measured at rated current after temperature has stabilized | 1 | |||
| Nominal power dissipation at rated current | 0.456 | W | At rated current | 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:
04381.25WR - Footprint:
Fuse:Fuse_0603_1608Metric - 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files:
04381-25wr-etched.step/04381-25wr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);04381-25wr.step/04381-25wr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (3 pp, sha256
a9efab228ef1992a, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal convention(convention), consensusoff(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).