component
0440.500WRA
Public Made by Adomby adom
Littelfuse Disposable Fuses, 1206. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdown0440.500WRA
Littelfuse · Disposable Fuses · 1206
0440.500WRA 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 | One fuse termination (Ag/Ni/Sn) of the 1206 chip fuse, non-polarized and interchangeable with the other terminal; rated 0.5 A, 63 V max, 50A @ 63VAC/DC interrupting rating. |
| 2 | 2 | passive | Other fuse termination (Ag/Ni/Sn) of the 1206 chip fuse, non-polarized and interchangeable with the other terminal; nominal resistance 0.8140 ohms at 0.5 A rating. |
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 (0.50A - 0.75A) | 4 | hours | 0.50A - 0.75A ampere range, opening time at 25ºC | 1 | |||
| Opening Time at 25ºC, 350% of Ampere Rating (0.50A - 0.75A) | 5 | secs. | 0.50A - 0.75A ampere range, opening time at 25ºC | 1 | |||
| Max. Voltage Rating | 63 | V | Amp code .500 | 1 | |||
| Continuous operation current (recommended maximum) | 80 | % | Continuous operation, percent of rated current | 1 | |||
| Peak Reflow Temperature | 260 | °C | Pb-free reflow soldering; do not exceed 260°C | 2 | |||
| Nominal Resistance | 0.814 | Ohms | Measured with < 10% rated current | 1 | |||
| Nominal Melting I2t | 0.02642 | A2Sec. | Measured at 1msec. opening time | 1 | |||
| Nominal Voltage Drop At Rated Current | 0.4831 | V | Measured at rated current after temperature has stabilized | 1 | |||
| Nominal Power Dissipation At Rated Current | 0.242 | W | At rated current | 1 | |||
| Ampere Rating | 0.5 | A | 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:
0440.500WRA - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
0440-500wra-etched.step/0440-500wra-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);0440-500wra.step/0440-500wra.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (3 pp, sha256
fb54d73cc8fddcf8, 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).