# PESD3V3S2UT-ES

**ElecSuper** · ESD Protection Devices · SOT-23

PESD3V3S2UT-ES from ElecSuper, 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 | IO | bidirectional | Connects to an IO data or transmission line to be protected; all pins are rated to withstand ±30kV ESD per IEC61000-4-2 air discharge. |
| 2 | IO | bidirectional | Connects to an IO data or transmission line to be protected; all pins are rated to withstand ±30kV ESD per IEC61000-4-2 air discharge. |
| 3 | GND | power_in | Connects to GND as the reference return for the ESD clamps. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ElecSuper |
| Package | SOT-23 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Peak pulse power | Ppk |  |  | 450 | W | tp=8/20us @25℃ | 2 |
| Peak pulse current | IPP |  |  | 30 | A | tp=8/20us @25℃ | 2 |
| ESD (IEC61000-4-2 air discharge) | VESD |  |  | 30 | kV | IEC61000-4-2 air discharge @25℃ | 2 |
| ESD (IEC61000-4-2 contact discharge) | VESD |  |  | 30 | kV | IEC61000-4-2 contact discharge @25℃ | 2 |
| Operating temperature | TOP | -40 |  | 125 | ℃ | Over operating free-air temperature range | 2 |
| Storage temperature | TSTG | -55 |  | 150 | ℃ |  | 2 |
| Junction temperature | TJ |  |  | 150 | ℃ |  | 2 |
| Lead temperature | TL |  |  | 260 | ℃ |  | 2 |
| Reverse Stand-off Voltage | VRWM |  |  | 3.3 | V |  | 3 |
| Reverse Breakdown Voltage | VBR |  |  | 4 | V | IT=1mA | 3 |
| Reverse Leakage Current | IR |  |  | 1 | uA | VRWM=3V | 3 |
| Clamping Voltage | VC | 7 |  | 8 | V | IPP=1A; tp=8/20us | 3 |
| Clamping Voltage | VC | 13 |  | 15 | V | IPP=30A; tp=8/20us | 3 |
| Junction Capacitance | CJ | 200 |  | 300 | pF | IO-GND, VR=0V; f=1MHz | 3 |

## CAD (KiCad official)

- Symbol: `PESD3V3S2UT-ES`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `pesd3v3s2ut-es-etched.step` / `pesd3v3s2ut-es-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pesd3v3s2ut-es.step` / `pesd3v3s2ut-es.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ElecSuper datasheet](docs/pesd3v3s2ut-es-datasheet.pdf) (7 pp, sha256 `93f1ced129769327`, retrieved 2026-10-28, 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/pesd3v3s2ut-es-datasheet.pdf)