# ESD3V3U05-1006

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

ESD3V3U05-1006 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 uni-directional TVS diode, with junction capacitance of 0.45pF typical and 0.5pF maximum measured from pin 1 to pin 2 at VR = 0V and f = 1MHz. |
| 2 | 2 | passive | Terminal 2 of the uni-directional TVS diode, forming the other side of the protected line with reverse working voltage of 3.3V maximum and breakdown voltage of 4.2V minimum at 1mA. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `ESD3V3U05-1006`
- Footprint: `Diode_SMD:D_SOD-882`
- 3D model: DFN1006-2 (KiCad packages3D, STEP)
- 3D model files: `esd3v3u05-1006-etched.step` / `esd3v3u05-1006-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd3v3u05-1006.step` / `esd3v3u05-1006.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](docs/esd3v3u05-1006-datasheet.pdf) (4 pp, sha256 `79368adc293c0bf1`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/esd3v3u05-1006-datasheet.pdf)