# ESD3V3B20A-1006

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

ESD3V3B20A-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 | Bi-directional ESD protection line terminal (pin 1, marked with the chamfered pad); the device has 3.3V max reverse working voltage and 30pF typical junction capacitance between pin 1 and pin 2. |
| 2 | 2 | passive | Bi-directional ESD protection line terminal (pin 2); the device has 3.3V max reverse working voltage and 30pF typical junction capacitance between pin 2 and pin 1. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | DFN1006-2 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `ESD3V3B20A-1006`
- Footprint: `Diode_SMD:D_SOD-882`
- 3D model: DFN1006-2 (KiCad packages3D, STEP)
- 3D model files: `esd3v3b20a-1006-etched.step` / `esd3v3b20a-1006-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd3v3b20a-1006.step` / `esd3v3b20a-1006.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/8590442938715955200) (4 pp, sha256 `e14f2cb90a170362`, retrieved 2026-10-13, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/esd3v3b20a-1006-datasheet.pdf)