# K1812L010DR

**KUU** · Resettable Fuses · 1812

K1812L010DR from KUU, 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 | One end terminal of the series PTC resettable fuse (non-polarized, interchangeable with the other terminal), rated 0.10 A hold current, 0.30 A trip current, 60 V max and 10 A max fault current. |
| 2 | 2 | passive | Other end terminal of the series PTC resettable fuse (non-polarized, interchangeable with the other terminal), rated 0.10 A hold current, 0.30 A trip current, 60 V max and 10 A max fault current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KUU |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum voltage rating (V max) | Vmax |  |  | 60 | V |  | 1 |
| Maximum current rating (I max) | Imax |  |  | 10 | A |  | 1 |
| Resistance range minimum (R min) | R min | 0.7 |  |  | Ω |  | 1 |
| Resistance range maximum (R1 max) | R1 max |  |  | 15 | Ω |  | 1 |
| Hold current | IH |  | 0.1 |  | A |  | 1 |
| Trip current | IT |  | 0.3 |  | A |  | 1 |
| Maximum operating (time to trip) time |  |  | 1.5 |  | s |  | 1 |
| Power dissipation | Pd |  | 0.8 |  | W |  | 1 |
| Hold current at ambient temperature | IH |  | 0.16 |  | A | Ambient temperature -40℃ | 3 |
| Hold current at ambient temperature | IH |  | 0.14 |  | A | Ambient temperature -20℃ | 3 |
| Hold current at ambient temperature | IH |  | 0.12 |  | A | Ambient temperature 0℃ | 3 |
| Hold current at ambient temperature | IH |  | 0.1 |  | A | Ambient temperature 25℃ | 3 |
| Hold current at ambient temperature | IH |  | 0.08 |  | A | Ambient temperature 40℃ | 3 |
| Hold current at ambient temperature | IH |  | 0.07 |  | A | Ambient temperature 50℃ | 3 |
| Hold current at ambient temperature | IH |  | 0.06 |  | A | Ambient temperature 60℃ | 3 |
| Hold current at ambient temperature | IH |  | 0.05 |  | A | Ambient temperature 70℃ | 3 |
| Hold current at ambient temperature | IH |  | 0.03 |  | A | Ambient temperature 85℃ | 3 |

## CAD (KiCad official)

- Symbol: `K1812L010DR`
- Footprint: `Fuse:Fuse_1812_4532Metric`
- 3D model: 1812, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal _1806_ height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `k1812l010dr-etched.step` / `k1812l010dr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `k1812l010dr.step` / `k1812l010dr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KUU datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588919891282182144) (3 pp, sha256 `b3fbc50fa7279685`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-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).

[Datasheet PDF](docs/k1812l010dr-datasheet.pdf)