# ESDAULC6-1U2

**STMicroelectronics** · ESD And Surge Protection (TVS/ESD) · 0201

ESDAULC6-1U2 from STMicroelectronics, in a 0201. 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 | K | passive | Cathode (pin 1, marked pad) connects to the protected data line or I/O, which has a 6 V min breakdown voltage at 1 mA, 3 V stand-off voltage and 0.8 pF typ line capacitance. |
| 2 | A | passive | Anode connects to ground as the return of the unidirectional TVS diode, which is rated for IEC 61000-4-2 ±8 kV contact and ±15 kV air discharge. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | 0201 |
| Category | Circuit Protection |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Breakdown voltage | VBR | 6 |  |  | V | IR = 1 mA | 2 |
| Leakage current | IRM |  |  | 100 | nA | VRM = 3 V | 2 |
| Clamping voltage | VCL |  |  | 13 | V | IPP = 1 A, 8/20 µs | 2 |
| Line capacitance | Cline |  | 0.8 | 1 | pF | F = [200 MHz - 3000 MHz], VR = 0 V | 2 |
| Peak pulse voltage, IEC 61000-4-2 contact discharge | VPP |  |  | 17 | kV | IEC 61000-4-2 contact discharge | 2 |
| Peak pulse voltage, IEC 61000-4-2 air discharge | VPP |  |  | 25 | kV | IEC 61000-4-2 air discharge | 2 |
| Peak pulse power dissipation | PPP |  |  | 18 | W | 8/20 µs | 2 |
| Peak pulse current | IPP |  |  | 1.4 | A | 8/20 µs | 2 |
| Operating junction temperature range | Tj | -40 |  | 150 | °C |  | 2 |
| Storage temperature range | Tstg | -55 |  | 150 | °C |  | 2 |
| Maximum lead temperature for soldering | TL |  |  | 260 | °C | during 10 s | 2 |

## CAD (KiCad official)

- Symbol: `ESDAULC6-1U2`
- Footprint: `Diode_SMD:D_0201_0603Metric`
- 3D model: 0201 (KiCad packages3D, STEP)
- 3D model files: `esdaulc6-1u2-etched.step` / `esdaulc6-1u2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esdaulc6-1u2.step` / `esdaulc6-1u2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/esdaulc6-1u2.pdf) (10 pp, sha256 `40aaec7e472abe81`, retrieved 2026-10-21, tier: manufacturer)
- **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/esdaulc6-1u2-datasheet.pdf)