# 0805L110ULYR

**Littelfuse** · Resettable Fuses · 0805

0805L110ULYR from Littelfuse, 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 PTC fuse (0805L110UL: Ihold 1.10 A, Itrip 1.80 A, Vmax 6 Vdc, Imax 50 A), with a 1.00 x 1.50 mm solder pad. |
| 2 | 2 | passive | Other terminal of the non-polarized resettable PTC fuse (0805L110UL: Ihold 1.10 A, Itrip 1.80 A, Vmax 6 Vdc, Imax 50 A), with a 1.00 x 1.50 mm solder pad and 1.20 mm pad gap. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum voltage device can withstand without damage at rated current | Vmax |  |  | 6 | Vdc | At rated current Imax | 1 |
| Maximum fault current device can withstand without damage at rated voltage | Imax |  |  | 50 | A | At rated voltage Vmax | 1 |
| Minimum resistance of device in initial (un-soldered) state | R min | 0.04 |  |  | Ω | Initial (un-soldered) state | 1 |
| Maximum resistance of device at 20℃ after tripping or reflow soldering | R 1max |  |  | 0.12 | Ω | 20℃, measured one hour after tripping or reflow soldering of 260℃ for 20 sec. | 1 |
| Trip current (minimum current at which device trips) | I trip | 1.8 |  |  | A | 20℃ still air | 1 |
| Hold current (maximum current device passes without tripping) | I hold |  |  | 1.1 | A | 20℃ still air | 1 |
| Power dissipated from device in tripped state | Pd |  | 0.6 |  | W | Tripped state, 20℃ still air | 1 |
| Maximum time-to-trip current |  |  | 8 |  | A | Time-to-trip test; time 0.3 s | 1 |
| Maximum time-to-trip time |  |  | 0.3 |  | s | At 8.0 A | 1 |

## CAD (KiCad official)

- Symbol: `0805L110ULYR`
- Footprint: `Fuse:Fuse_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `0805l110ulyr-etched.step` / `0805l110ulyr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `0805l110ulyr.step` / `0805l110ulyr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588937037096865793) (3 pp, sha256 `04fca8e8b0548f89`, 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/0805l110ulyr-datasheet.pdf)