# PESD5V0U1UA

**JSMSEMI** · IC · SOD-323

PESD5V0U1UA from JSMSEMI, 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 | K | passive | Cathode of the unidirectional ESD protection diode, connected to the line to be protected (marking bar indicates the cathode); reverse standoff voltage VRWM is 5 V max. |
| 2 | A | passive | Anode of the ESD protection diode, connected to ground; ESD rating is 9 kV IEC 61000-4-2 contact discharge measured from pin 1 to pin 2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | SOD-323 |
| Category |  |
| 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 |  |  | 5 | V | Tamb = 25 °C | 4 |
| Breakdown voltage | VBR | 5.8 | 6.8 | 8.8 | V | IR = 5 mA; Tamb = 25 °C | 4 |
| Reverse leakage current | IRM |  | 1 | 100 | nA | VRWM = 5 V; Tamb = 25 °C | 4 |
| Diode capacitance | Cd |  | 2 | 2.6 | pF | f = 1 MHz; VR = 0 V; Tamb = 25 °C | 4 |
| Diode capacitance | Cd |  | 1.7 | 2.3 | pF | f = 1 MHz; VR = 5 V; Tamb = 25 °C | 4 |
| Clamping voltage | VCL |  | 9.5 | 11 | V | IPPM = 1.3 A; Tamb = 25 °C | 4 |
| Differential resistance | Rdiff |  |  | 100 | Ω | IR = 1 mA; Tamb = 25 °C | 4 |
| Rated peak pulse current | IPPM |  |  | 1.3 | 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 |  |  | 9 | kV | IEC 61000-4-2 (contact discharge) | 3 |
| Electrostatic discharge voltage | VESD |  |  | 10 | kV | MIL-STD-883 (human body model) | 3 |
| Clamping voltage | VCL |  | 9 |  | V | IPP = 1 A; 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) - 10 kV [1] Device stressed with ten non-repetitive ESD pulses. | 3 |

## CAD (KiCad official)

- Symbol: `PESD5V0U1UA`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `pesd5v0u1ua-etched.step` / `pesd5v0u1ua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pesd5v0u1ua.step` / `pesd5v0u1ua.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586185942339739648) (11 pp, sha256 `856e2b778637e5f0`, 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/pesd5v0u1ua-datasheet.pdf)