# K0805L020

**KUU** · Resettable Fuses · 0805

K0805L020 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 | First terminal of the non-polarized PTC resettable fuse, rated 0.20 A hold current, 0.50 A trip current, 30 V max. |
| 2 | 2 | passive | Second terminal of the non-polarized PTC resettable fuse, rated 0.20 A hold current, 0.50 A trip current, 30 V max. |

## 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 |
|---|---|---|---|---|---|---|---|
| Holding current | IH |  |  | 0.2 | A | 25℃ still air; maximum current at which device will not trip | 1 |
| Tripping current | IT | 0.5 |  |  | A | 25℃ still air; minimum current at which device will trip | 1 |
| Maximum voltage | Vmax |  |  | 30 | V | at rated current; maximum voltage device can withstand without damage | 1 |
| Maximum fault current | Imax |  |  | 100 | A | at rated voltage; maximum fault current device can withstand without damage | 1 |
| Maximum time to trip | Ttrip |  |  | 0.02 | s | at 8.0 A trip current | 1 |
| Minimum resistance prior to trip | R min | 0.5 |  |  | Ω | 25℃, prior to trip | 1 |
| Rated working power | Pd |  | 0.6 |  | W | rated working power | 1 |
| Maximum ambient operating temperature range |  | -40 |  | 85 | ℃ | thermal derating table span; hold/trip current derates from 0.28/0.70 A at -40℃ to 0.07/0.19 A at 85℃ | 1 |
| Reflow peak temperature |  |  |  | 260 | ℃ | solder reflow profile peak; devices may not meet performance if recommended profile exceeded | 1 |

## CAD (KiCad official)

- Symbol: `K0805L020`
- Footprint: `Fuse:Fuse_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `k0805l020-etched.step` / `k0805l020-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `k0805l020.step` / `k0805l020.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KUU datasheet](docs/k0805l020-datasheet.pdf) (1 pp, sha256 `736b8a68b2b67983`, 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/k0805l020-datasheet.pdf)