# AD-ESD24VC2

**Changjing** · TVS · SOT-23

AD-ESD24VC2 from Changjing, in a SOT-23. 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 | Protected line 1, the anode of the first uni-directional ESD diode, with reverse standoff voltage 24V max and breakdown voltage 26.7V to 33V at 1mA. |
| 2 | I/O2 | passive | Protected line 2, the anode of the second uni-directional ESD diode, with reverse standoff voltage 24V max and breakdown voltage 26.7V to 33V at 1mA. |
| 3 | COMMON | passive | Common cathode of both ESD diodes, with the cathodes tied together as shown in the package symbol. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `AD-ESD24VC2`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ad-esd24vc2-etched.step` / `ad-esd24vc2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad-esd24vc2.step` / `ad-esd24vc2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](docs/ad-esd24vc2-datasheet.pdf) (7 pp, sha256 `f03261b0d4405420`, retrieved 2026-10-28, 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/ad-esd24vc2-datasheet.pdf)