# PESD5V2S2UT-K

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

PESD5V2S2UT-K from PAKER, 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 | 1 | passive | Pin 1 is one of the two line pins measured against pin 3 for the 120 pF typical junction capacitance (VR = 0 V, f = 1 MHz); no pin function is stated. |
| 2 | 2 | passive | Pin 2 is one of the two line pins measured against pin 3 for the 120 pF typical junction capacitance (VR = 0 V, f = 1 MHz); no pin function is stated. |
| 3 | 3 | passive | Pin 3 is the common reference pin for the pin1/pin2 junction capacitance measurement; no other function is stated. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | PAKER |
| Package | SOT-23 |
| Category | Circuit 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 | PPP |  |  | 300 | W | tp =8/20μs | 1 |
| Peak Pulse Current | Ipp |  |  | 20 | A | tp =8/20μs (note1) | 1 |
| ESD per IEC 61000-4-2 (Air) | VESD |  |  | 30 | kV | IEC 61000-4-2 (Air) | 1 |
| ESD per IEC 61000-4-2 (Contact) | VESD |  |  | 30 | kV | IEC 61000-4-2 (Contact) | 1 |
| Lead Soldering Temperature | TL |  |  | 260 | ℃ | 10 seconds | 1 |
| Junction Temperature | TJ | -55 |  | 125 | ℃ |  | 1 |
| Storage Temperature | Tstg | -55 |  | 125 | ℃ |  | 1 |
| Reverse Breakdown Voltage | VBR | 6 | 7 | 8.5 | V | IT=1mA | 1 |
| Reverse Stand-Off Voltage | VRWM |  |  | 5 | V |  | 1 |
| Reverse Leakage Current | IR |  | 0.5 | 1 | μA | VRWM=5V, T=25℃ | 1 |
| Peak Pulse Current | IPP |  |  | 20 | A | tp =8/20μs | 1 |
| Clamping Voltage | VC |  |  | 12 | V | IPP=10A, tp=8/20μs | 1 |
| Clamping Voltage | VC |  |  | 16 | V | IPP=20A, tp=8/20μs | 1 |
| Junction Capacitance | Cj |  | 120 |  | pF | VR = 0V, f = 1MHz (pin1、pin2 to pin3) | 1 |

## CAD (KiCad official)

- Symbol: `PESD5V2S2UT-K`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `pesd5v2s2ut-k-etched.step` / `pesd5v2s2ut-k-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pesd5v2s2ut-k.step` / `pesd5v2s2ut-k.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [PAKER datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603112928597979136) (2 pp, sha256 `47d4ebfc0423d611`, 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/pesd5v2s2ut-k-datasheet.pdf)