# ESD5V3U04-0201

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · 0201

ESD5V3U04-0201 from TECH PUBLIC, in a 0201. 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 | Pin 1 | passive | Terminal 1 of the uni-directional ESD protector; breakdown voltage V(BR) is specified from pin 1 to pin 2 (6 V min at I(BR) = 1 mA) and reverse working voltage is 5.3 V max. |
| 2 | Pin 2 | passive | Terminal 2 of the uni-directional ESD protector; forward clamping voltage is specified from pin 2 to pin 1 (VFC up to 6 V at IPP = 3 A, 8/20 µs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | 0201 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `ESD5V3U04-0201`
- Footprint: `Diode_SMD:D_0201_0603Metric`
- 3D model: 0201, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.3 mm nominal _01005_ height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `esd5v3u04-0201-etched.step` / `esd5v3u04-0201-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd5v3u04-0201.step` / `esd5v3u04-0201.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588907279114911744) (4 pp, sha256 `f4a8556320ac07f2`, retrieved 2026-10-09, 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/esd5v3u04-0201-datasheet.pdf)