# NUP1105

**Shikues** · ESD And Surge Protection (TVS/ESD) · SOT-23

NUP1105 from Shikues, in a SOT-23. 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 | CATHODE | passive | Cathode of the bidirectional TVS protection diode; the datasheet gives no pin-specific voltage or current limit beyond the device maximum ratings. |
| 2 | CATHODE | passive | Cathode of the bidirectional TVS protection diode; the datasheet gives no pin-specific voltage or current limit beyond the device maximum ratings. |
| 3 | CATHODE | passive | Cathode of the bidirectional TVS protection diode; the datasheet gives no pin-specific voltage or current limit beyond the device maximum ratings. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shikues |
| Package | SOT-23 |
| Category | Circuit Protection |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `NUP1105`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `nup1105-etched.step` / `nup1105-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `nup1105.step` / `nup1105.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shikues datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590412489293651968) (4 pp, sha256 `0c2560baa2273e6a`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/nup1105-datasheet.pdf)