# ESD5431N

**TECH PUBLIC** · Electrostatic And Surge Protection (TVS/ESD) · DFN1006-2

ESD5431N from TECH PUBLIC, in a DFN1006-2. 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 | 1 | passive | One terminal of the 1-line bidirectional TVS diode; the datasheet gives reverse working voltage 3.3 V max, breakdown 3.6 V min, and clamping voltage 9 V max at Ipp = 8 A (8/20 µs). |
| 2 | 2 | passive | Other terminal of the 1-line bidirectional TVS diode, symmetric with pin 1 because the device is bidirectional; same ratings apply (reverse working voltage 3.3 V max, breakdown 3.6 V min). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | DFN1006-2 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `ESD5431N`
- Footprint: `Diode_SMD:D_SOD-882`
- 3D model: DFN1006-2 (KiCad packages3D, STEP)
- 3D model files: `esd5431n-etched.step` / `esd5431n-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd5431n.step` / `esd5431n.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](docs/esd5431n-datasheet.pdf) (4 pp, sha256 `be0130aeceb6c1ad`, 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/esd5431n-datasheet.pdf)