# PESD5V0S4UD

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-23-6

PESD5V0S4UD from TECH PUBLIC, in a SOT-23-6. 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 | I/O1 | passive | Protected line 1, steered by a diode pair to the common center node; I/O to GND junction capacitance 60 pF typ, 90 pF max (VR=0V, f=1MHz). |
| 2 | GND | power_in | Common ground node of the TVS array, tied internally to pin 5 and the center node in the pin diagram. |
| 3 | I/O3 | passive | Protected line 3, steered by a diode pair to the common center node; reverse working voltage 5 V max, ESD ±30 kV air and contact per IEC61000-4-2. |
| 4 | I/O4 | passive | Protected line 4, steered by a diode pair to the common center node; clamping voltage 11 V max at IPP=4.5 A (8/20µs). |
| 5 | GND | power_in | Common ground node of the TVS array, tied internally to pin 2 and the center node in the pin diagram. |
| 6 | I/O6 | passive | Protected line 6, steered by a diode pair to the common center node; leakage 100 nA max at VRWM=5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23-6 |
| Category | Circuit Protection |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `PESD5V0S4UD`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `pesd5v0s4ud-etched.step` / `pesd5v0s4ud-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pesd5v0s4ud.step` / `pesd5v0s4ud.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/8590227223421612032) (4 pp, sha256 `84ac8ef6346c6f0d`, retrieved 2026-10-19, 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/pesd5v0s4ud-datasheet.pdf)