# 1812L110

**LUTE** · Resettable Fuses · 1812

1812L110 from LUTE, in a 1812. 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 | LUTE |
| Package | 1812 |
| 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 |
|---|---|---|---|---|---|---|---|
| Resistance change, passive aging (typical) |  | -5 |  | 5 | % | +85°C, 1000 hours; typical | 5 |
| Resistance change, humidity aging (typical) |  | -5 |  | 5 | % | +85°C, 85% R.H., 168 hours; typical | 5 |
| Resistance change, thermal shock (typical) |  | -33 |  | 33 | % | +85°C to -40°C, 20 times; typical | 5 |
| Ambient operating temperature |  | -40 |  | 85 | °C | Ambient operating conditions | 5 |
| Maximum surface temperature in tripped state |  |  |  | 125 | °C | Device in tripped state | 5 |
| Hold current | I hold |  |  | 1.1 | A | 25°C still air | 2 |
| Trip current | I trip | 2.2 |  |  | A | 25°C still air | 2 |
| Initial minimum resistance | R min | 0.045 |  |  | Ω | Initial (un-soldered) state | 2 |
| Maximum resistance after trip or reflow | R 1max |  |  | 0.25 | Ω | 25°C, measured one hour after tripping or reflow soldering at 260°C for 20 sec | 2 |
| Time to trip (max) |  |  |  | 0.3 | s | At 8.00 A | 2 |
| Hold current vs ambient temperature | I hold |  | 1.6 |  | A | Ambient -40℃ | 6 |
| Hold current vs ambient temperature | I hold |  | 1.45 |  | A | Ambient -20℃ | 6 |
| Hold current vs ambient temperature | I hold |  | 1.28 |  | A | Ambient 0℃ | 6 |
| Hold current vs ambient temperature | I hold |  | 1.1 |  | A | Ambient 25℃ | 6 |
| Hold current vs ambient temperature | I hold |  | 0.92 |  | A | Ambient 40℃ | 6 |
| Hold current vs ambient temperature | I hold |  | 0.83 |  | A | Ambient 50℃ | 6 |
| Hold current vs ambient temperature | I hold |  | 0.71 |  | A | Ambient 60℃ | 6 |
| Hold current vs ambient temperature | I hold |  | 0.66 |  | A | Ambient 70℃ | 6 |
| Hold current vs ambient temperature | I hold |  | 0.52 |  | A | Ambient 85℃ | 6 |

## CAD (KiCad official)

- Symbol: `1812L110`
- Footprint: `Fuse:Fuse_1812_4532Metric`
- 3D model: 1812 (KiCad packages3D, STEP)
- 3D model files: `1812l110-etched.step` / `1812l110-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1812l110.step` / `1812l110.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [LUTE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602996315076898816) (10 pp, sha256 `dd888271022b76f6`, retrieved 2026-10-28, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (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).

[Datasheet PDF](docs/1812l110-datasheet.pdf)