component
0501020.WR1
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 |
| 0501020-wr1-etched.glb | 2d ago |
| 0501020-wr1-etched.step | 2d ago |
| 0501020-wr1-hero.glb | 2d ago |
| 0501020-wr1-hero.overlay.json | 2d ago |
| 0501020-wr1.glb | 2d ago |
| 0501020-wr1.kicad_mod | 2d ago |
| 0501020-wr1.kicad_sym | 2d ago |
| 0501020-wr1.lbr | 2d ago |
| 0501020-wr1.step | 2d ago |
| package.json | 2d ago |
| page.json | 2d ago |
| README.md | 2d ago |
0501020.WR1
Littelfuse · Disposable Fuses · 1206
0501020.WR1 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 of two Ag/Ni/Sn end terminations of the fuse, interchangeable with the other, rated 32 V DC with 150 A DC interrupting rating (10 A to 20 A ratings). |
| 2 | 2 | passive | The other of two Ag/Ni/Sn end terminations of the fuse, interchangeable with the first, rated 32 V DC with 150 A DC interrupting rating (10 A to 20 A ratings). |
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 |
|---|---|---|---|---|---|---|---|
| Max. Voltage Rating | 32 | V | 1 | ||||
| Interrupting Rating (DC) | 150 | A | @ 32 VDC; DC interrupting rating tested at rated voltage with time constant < 0.5 msec | 1 | |||
| Opening time at 100% of ampere rating (4 hours minimum) | 4 | Hours | 10A-20A; at 25ºC | 1 | |||
| Opening time at 350% of ampere rating (5 seconds maximum) | 5 | Seconds | 10A-20A; at 25ºC | 1 | |||
| Operating temperature | -55 | 150 | ºC | Printed as Operating Temperature from -55ºC to +150ºC | 1 | ||
| Continuous operation current (recommended maximum) | 80 | % | Percent of rated current; recommended continuous operation, no more than 80% rated current (standard 20% re-rating also applies) | 1 | |||
| Nominal Resistance (20A) | 0.00194 | Ohms | Measured with < 10% rated current | 1 | |||
| Nominal Melting I2T (20A) | 86.36 | A2Sec. | Measured at 1 msec opening time | 1 | |||
| Nominal Voltage Drop At Rated Current (20A) | 0.05888 | V | Measured at rated current after temperature has stabilized, fuse mounted on board with 3-oz Cu trace | 1 | |||
| Nominal Power Dissipation At Rated Current (20A) | 1.1776 | W | At rated current | 1 | |||
| Peak reflow temperature (Pb-free) | TP | 260 | °C | Printed as 260+0/-5 °C peak temperature; do not exceed 260°C | 2 | ||
| Wave soldering temperature | 260 | °C | Wave soldering 260°C, 10 seconds max. | 2 |
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:
0501020.WR1 - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
0501020-wr1-etched.step/0501020-wr1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);0501020-wr1.step/0501020-wr1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (3 pp, sha256
15c363790431c053, 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).