component
0501012.WR
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
markdown0501012.WR
Littelfuse · Disposable Fuses · 1206
0501012.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 terminal 1 (unpolarized, Ag/Ni/Sn termination); 10A-20A rated, 32 V max, 150 A DC interrupting rating at 32 VDC. |
| 2 | 2 | passive | Fuse terminal 2 (unpolarized, Ag/Ni/Sn termination); 10A-20A rated, 32 V max, 150 A DC interrupting rating at 32 VDC. |
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 |
|---|---|---|---|---|---|---|---|
| Opening time at 25ºC, minimum | 4 | Hours | 100% of ampere rating, 10A, 20A, at 25ºC | 1 | |||
| Opening time at 25ºC, maximum | 5 | Seconds | 350% of ampere rating, 10A, 20A, at 25ºC | 1 | |||
| Max. Voltage Rating | 32 | V | 1 | ||||
| Operating Temperature | -55 | 150 | ºC | 1 | |||
| Continuous operation current limit | 80 | % of rated current | Continuous operation; devices should be operated continuously at no more than 80% rated current | 1 | |||
| Nominal Resistance | 0.00311 | Ohms | Measured with < 10% rated current | 1 | |||
| Nominal Melting I2T | I2T | 20.341 | A2Sec. | Measured at 1 msec. opening time | 1 | ||
| Nominal Voltage Drop At Rated Current | 0.04927 | V | At rated current, after temperature has stabilized, fuse mounted with 3-oz Cu trace | 1 | |||
| Nominal Power Dissipation At Rated Current | 0.5912 | 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:
0501012.WR - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
0501012-wr-etched.step/0501012-wr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);0501012-wr.step/0501012-wr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (3 pp, sha256
15c363790431c053, retrieved 2026-10-17, 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).