# ESDALCL6-2SC6

**STMicroelectronics** · ESD And Surge Protection (TVS/ESD) · SOT-23-6L

ESDALCL6-2SC6 from STMicroelectronics, in a SOT-23-6L. 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 | I/O1 | passive | Data line 1 ESD protection pin, with clamping voltage of 12 V at IPP = 1 A and 17 V at IPP = 5 A (8/20 µs) to GND. |
| 2 | GND | power_in | Ground reference for the ESD protection clamps, against which the I/O clamping voltages and capacitance are specified. |
| 3 | I/O2 | passive | Data line 2 ESD protection pin, with typical line capacitance Ci/o-GND of 2.5 pF and leakage of 10 nA at 3 V. |
| 4 | I/O2 | passive | Data line 2 ESD protection pin (second pad of I/O2), rated for IEC 61000-4-2 ESD of 30 kV air discharge and 15 kV contact discharge. |
| 5 | VBUS | power_in | Protected VBUS line, with the same ESD clamping and very low leakage characteristics as the data-line pins. |
| 6 | I/O1 | passive | Data line 1 ESD protection pin (second pad of I/O1), with typical inter-line capacitance Ci/o-i/o of 1.2 pF between I/O pins. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOT-23-6L |
| Category | Circuit Protection |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `ESDALCL6-2SC6`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6L (KiCad packages3D, STEP)
- 3D model files: `esdalcl6-2sc6-etched.step` / `esdalcl6-2sc6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esdalcl6-2sc6.step` / `esdalcl6-2sc6.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588922565842231296) (7 pp, sha256 `b7b5314a52e06f05`, retrieved 2026-10-12, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/esdalcl6-2sc6-datasheet.pdf)