# LXES15AAA1-133

**Leiditech** · ESD And Surge Protection (TVS/ESD) · 0402

LXES15AAA1-133 from Leiditech, in a 0402. 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 | Bidirectional ESD protection terminal, connected to the signal line to be protected (continuous operating voltage 15 V max, 0.05 pF typ. capacitance); the device is symmetric so it is interchangeable with pin 2. |
| 2 | 2 | passive | Second bidirectional ESD protection terminal, connected to ground or the return side (continuous operating voltage 15 V max, 15 kV IEC61000-4-2 contact/air); the device is symmetric so it is interchangeable with pin 1. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Leiditech |
| Package | 0402 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `LXES15AAA1-133`
- Footprint: `Diode_SMD:D_0402_1005Metric`
- 3D model: 0402, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.4 mm nominal _0402_ height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `lxes15aaa1-133-etched.step` / `lxes15aaa1-133-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lxes15aaa1-133.step` / `lxes15aaa1-133.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/8589839677839872000) (7 pp, sha256 `ff4dc557c2fa45b4`, 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/lxes15aaa1-133-datasheet.pdf)