# PESD2IVN27-UX

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-323

PESD2IVN27-UX from TECH PUBLIC, in a SOT-323. 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 | Pin1 | passive | Protected I/O line 1 (CAN bus line) connected to the cathode-side diode of the first channel, with the steering diode pair going to common Pin3; working voltage 24V max. |
| 2 | Pin2 | passive | Protected I/O line 2 (CAN bus line) connected to the second channel's diode pair going to common Pin3; working voltage 24V max. |
| 3 | Pin3 | passive | Common pin joining both diode channels in the schematic; the datasheet does not label it GND or any other function. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-323 |
| Category | Circuit Protection |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `PESD2IVN27-UX`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `pesd2ivn27-ux-etched.step` / `pesd2ivn27-ux-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pesd2ivn27-ux.step` / `pesd2ivn27-ux.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604434479662309376) (4 pp, sha256 `9c131e4fe5cc6fd6`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/pesd2ivn27-ux-datasheet.pdf)