# K0805L020AR

**KUU** · Resettable Fuses · 0805

K0805L020AR from KUU, in a 0805. 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 terminal of the non-polarized resettable PPTC fuse, with hold current 0.20 A, trip current 0.50 A, max voltage 9.0 V and max interrupt current 100 A. |
| 2 | 2 | passive | Other terminal of the non-polarized resettable PPTC fuse, in series with pin 1, with resistance 0.650 ohm min to 3.500 ohm max (R1 max) and typical power dissipation of 0.50 W. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KUU |
| Package | 0805 |
| 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 R min | R min | 0.65 |  |  | Ω |  | 1 |
| Resistance R1 max | R1 max |  |  | 3.5 | Ω |  | 1 |
| Maximum voltage (V max) | V max |  |  | 9 | V |  | 1 |
| Maximum current (I max) | I max |  |  | 100 | A |  | 1 |
| Maximum operating time (Sec.) |  |  |  | 0.02 | s |  | 1 |
| Power dissipation (Pd typ) | Pd |  | 0.5 |  | W |  | 1 |
| Hold current (IH) | IH |  | 0.2 |  | A |  | 1 |
| Trip current (IT) | IT |  | 0.5 |  | A |  | 1 |
| Unlabeled current row (column header '(A)') |  |  | 8 |  | A |  | 1 |
| Hold current at ambient temperature | IH |  | 0.28 |  | A | Ambient -40℃ | 2 |
| Hold current at ambient temperature | IH |  | 0.25 |  | A | Ambient -20℃ | 2 |
| Hold current at ambient temperature | IH |  | 0.23 |  | A | Ambient 0℃ | 2 |
| Hold current at ambient temperature | IH |  | 0.2 |  | A | Ambient 25℃ | 2 |
| Hold current at ambient temperature | IH |  | 0.17 |  | A | Ambient 40℃ | 2 |
| Hold current at ambient temperature | IH |  | 0.14 |  | A | Ambient 50℃ | 2 |
| Hold current at ambient temperature | IH |  | 0.12 |  | A | Ambient 60℃ | 2 |
| Hold current at ambient temperature | IH |  | 0.1 |  | A | Ambient 70℃ | 2 |
| Hold current at ambient temperature | IH |  | 0.07 |  | A | Ambient 85℃ | 2 |

## CAD (KiCad official)

- Symbol: `K0805L020AR`
- Footprint: `Fuse:Fuse_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `k0805l020ar-etched.step` / `k0805l020ar-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `k0805l020ar.step` / `k0805l020ar.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/8590191734018764800) (2 pp, sha256 `289fe225e022ae35`, retrieved 2026-10-18, 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/k0805l020ar-datasheet.pdf)