# PESD1IVN27A-QX

**Nexperia** · ESD And Surge Protection (TVS/ESD) · SOD-323

PESD1IVN27A-QX from Nexperia, in a SOD-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 | K1 | passive | Cathode of diode 1 (bidirectional ESD protection, VRWM = 27 V), connects to the protected bus line. |
| 2 | K2 | passive | Cathode of diode 2 (bidirectional ESD protection, VRWM = 27 V), connects to the return/ground side of the protected bus line. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-323 |
| Category | Circuit Protection |
| Pins | 2 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reverse standoff voltage | VRWM |  |  | 27 | V | Tamb = 25 °C | 4 |
| Breakdown voltage | VBR | 28 | 33 | 38 | V | IR = 10 mA; Tamb = 25 °C | 4 |
| Reverse leakage current | IRM |  | 1 | 50 | nA | VR = 27 V; Tamb = 25 °C | 4 |
| Diode capacitance | Cd |  | 14 | 17 | pF | f = 1 MHz; VR = 0 V; Tamb = 25 °C | 4 |
| Clamping voltage | VCL |  | 34 | 43 | V | IPP = 1 A; tp = 8/20 μs; Tamb = 25 °C | 4 |
| Clamping voltage | VCL |  | 36 | 45 | V | IPPM = 3 A; tp = 8/20 μs; Tamb = 25 °C | 4 |
| Clamping voltage (TLP) | VCL |  | 35 |  | V | IPP = 16 A; tp = 100 ns; TLP; Tamb = 25 °C | 4 |
| Dynamic resistance | Rdyn |  | 0.2 |  | Ω | IR = 10 A; Tamb = 25 °C | 4 |
| Rated peak pulse current | IPPM |  |  | 3 | A | tp = 8/20 μs | 3 |
| Junction temperature | Tj |  |  | 150 | °C |  | 3 |
| Ambient temperature | Tamb | -55 |  | 150 | °C |  | 3 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| Electrostatic discharge voltage | VESD |  |  | 30 | kV | IEC 61000-4-2; contact discharge | 3 |

## CAD (KiCad official)

- Symbol: `PESD1IVN27A-QX`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `pesd1ivn27a-qx-etched.step` / `pesd1ivn27a-qx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pesd1ivn27a-qx.step` / `pesd1ivn27a-qx.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602909782735278080) (12 pp, sha256 `e259bc1da6cd4525`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/pesd1ivn27a-qx-datasheet.pdf)