# PESD5V0U1BA

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

PESD5V0U1BA 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, one line); connect to the protected signal line, standoff voltage VRWM 5 V max. |
| 2 | K2 | passive | Cathode of diode 2 (bidirectional ESD protection); connect to ground/return, ESD rated up to 10 kV contact discharge (IEC 61000-4-2) measured pin 1 to pin 2. |

## 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage | VBR | 5.5 | 7 | 9.5 | V | IR = 5 mA; Tamb = 25 °C | 4 |
| Reverse standoff voltage | VRWM |  |  | 5 | V | Tamb = 25 °C | 4 |
| Reverse leakage current | IRM |  | 5 | 100 | nA | VRWM = 5 V; Tamb = 25 °C | 4 |
| Diode capacitance | Cd |  | 2.9 | 3.5 | pF | f = 1 MHz; VR = 0 V; Tamb = 25 °C | 4 |
| Differential resistance | Rdiff |  |  | 100 | Ω | IR = 1 mA; Tamb = 25 °C | 4 |
| Junction temperature | Tj |  |  | 150 | °C |  | 3 |
| Ambient temperature | Tamb | -55 |  | 150 | °C |  | 3 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| Electrostatic discharge voltage (contact) | VESD |  |  | 10 | kV | IEC 61000-4-2 (contact discharge) | 3 |
| Electrostatic discharge voltage (HBM) | VESD |  |  | 8 | kV | MIL-STD-883 (human body model) | 3 |
| Diode capacitance | Cd |  | 1.9 |  | pF | f = 1 MHz; VR = 5 V; Tamb = 25 °C | 4 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | pet |  | voltage MIL-STD-883 (human body model) - 8 kV [1] Device stressed with ten non-repetitive ESD pulses. | 3 |

## CAD (KiCad official)

- Symbol: `PESD5V0U1BA`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `pesd5v0u1ba-etched.step` / `pesd5v0u1ba-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pesd5v0u1ba.step` / `pesd5v0u1ba.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/PESD5V0U1BA.pdf) (11 pp, sha256 `aa2c1c537685c881`, retrieved 2026-10-22, tier: manufacturer)
- **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/pesd5v0u1ba-datasheet.pdf)