# TPESD03K2WT

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOD-523

TPESD03K2WT from TECH PUBLIC, in a SOD-523. 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 | One of two ESD protection terminals of the bidirectional (back-to-back) TVS diode; the datasheet gives a reverse working voltage VRWM of 3.3 V max and a reverse leakage current of 500 nA max at VRWM = 3.3 V. |
| 2 | Pin 2 | passive | The other ESD protection terminal of the bidirectional TVS diode; the datasheet gives a reverse working voltage VRWM of 3.3 V max and a junction capacitance of 0.5 pF max at VR = 0 V, f = 1 MHz. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOD-523 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `TPESD03K2WT`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `tpesd03k2wt-etched.step` / `tpesd03k2wt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpesd03k2wt.step` / `tpesd03k2wt.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](docs/tpesd03k2wt-datasheet.pdf) (4 pp, sha256 `a8ea8734ee962c28`, retrieved 2026-10-21, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (vision), consensus `claude-opus-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/tpesd03k2wt-datasheet.pdf)