# ESD5311X

**TECH PUBLIC** · ESD Protection Devices · DFN1006-2

ESD5311X 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 | Terminal 1 of the bidirectional TVS diode, shown on the terminal connection diagram as one side of the diode symbol with no polarity marking. The datasheet gives the reverse working voltage as 5 V max and breakdown voltage as 5.8 V min at 1 mA. |
| 2 | 2 | passive | Terminal 2 of the bidirectional TVS diode, shown on the terminal connection diagram as the opposite side of the diode symbol with no polarity marking. The datasheet gives a clamping voltage of 21 V max at 4 A (8x20 µs pulse) and junction capacitance of 0.3 pF typical. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `ESD5311X`
- Footprint: `Diode_SMD:D_SOD-882`
- 3D model: DFN1006-2 (KiCad packages3D, STEP)
- 3D model files: `esd5311x-etched.step` / `esd5311x-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd5311x.step` / `esd5311x.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](docs/esd5311x-datasheet.pdf) (4 pp, sha256 `00acc3ed39fa5ede`, 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/esd5311x-datasheet.pdf)