# ESDA05

**Leiditech** · ESD And Surge Protection (TVS/ESD) · 0603

ESDA05 from Leiditech, in a 0603. 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 bi-directional ESD suppressor (interchangeable with pin 2); continuous operating voltage max 5.5 V, trigger 12 V typ and clamping 25 V typ at IEC61000-4-2 8 kV contact discharge. |
| 2 | 2 | passive | Terminal 2 of the bi-directional ESD suppressor (interchangeable with pin 1); leakage max 10 nA at 5 V DC and capacitance 5 pF typ at 10 MHz. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Leiditech |
| Package | 0603 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `ESDA05`
- Footprint: `Diode_SMD:D_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `esda05-etched.step` / `esda05-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esda05.step` / `esda05.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Leiditech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589838836248715264) (5 pp, sha256 `ef9579cb8b265d68`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+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/esda05-datasheet.pdf)