component
0438003.WRA
Public Made by Adomby adom
Littelfuse Disposable Fuses, 0603. 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 | 7h ago |
| viewers | 7h ago |
| 0438003-wra-etched.glb | 7h ago |
| 0438003-wra-etched.step | 7h ago |
| 0438003-wra-hero.glb | 7h ago |
| 0438003-wra-hero.overlay.json | 7h ago |
| 0438003-wra.glb | 7h ago |
| 0438003-wra.kicad_mod | 7h ago |
| 0438003-wra.kicad_sym | 7h ago |
| 0438003-wra.lbr | 7h ago |
| 0438003-wra.step | 7h ago |
| package.json | 7h ago |
| page.json | 7h ago |
| README.md | 7h ago |
0438003.WRA
Littelfuse · Disposable Fuses · 0603
0438003.WRA 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 | One of two interchangeable, non-polarized Ag/Ni/Sn end terminations of the fuse element; the 3 A version is rated 32 V and 50 A interrupting at 32VDC/12VAC. |
| 2 | 2 | passive | Second interchangeable, non-polarized end termination of the fuse element; the 3 A version is rated 32 V and 50 A interrupting at 32VDC/12VAC. |
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 | 4 | hours | 100% of ampere rating, opening time at 25ºC | 1 | |||
| Opening time at 250% of ampere rating | 5 | seconds | 250% of ampere rating, opening time at 25ºC | 1 | |||
| Max. Voltage Rating | 32 | V | Amp code 003. (3 A) row of Electrical Specifications table | 1 | |||
| Interrupting Rating (AC/DC) | 50 | A | 50A @ 32VDC/12VAC as printed in the 2A-5A rating group; 3A cell not explicitly separated | 1 | |||
| Operating temperature | -55 | 150 | ºC | Operating temperature range | 1 | ||
| Continuous operating current (recommended) | 80 | % | Devices operated continuously at no more than 80% rated current | 1 | |||
| Peak temperature (Pb-free reflow) | TP | 260 | °C | Pb-free reflow; do not exceed 260°C | 2 | ||
| Wave soldering temperature | 260 | °C | Wave soldering, 10 seconds max | 2 | |||
| Ampere Rating | 3 | A | Amp code 003. (3 A) | 1 | |||
| Nominal Resistance | 0.0264 | Ohms | Measured with <10% rated current | 1 | |||
| Nominal Melting I2t | I2t | 0.439 | A2Sec. | Measured at 1 msec. opening time | 1 | ||
| Nominal Voltage Drop At Rated Current | 0.093 | V | Measured at rated current after temperature has stabilized | 1 | |||
| Nominal Power Dissipation At Rated Current | 0.279 | 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:
0438003.WRA - Footprint:
Fuse:Fuse_0603_1608Metric - 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files:
0438003-wra-etched.step/0438003-wra-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);0438003-wra.step/0438003-wra.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (4 pp, sha256
e39993e942f8fa16, retrieved 2026-10-18, 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).