# SM24C-MS

**MSKSEMI** · ESD And Surge Protection (TVS/ESD) · SOT-23

SM24C-MS from MSKSEMI, 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, connected through a bidirectional TVS diode to common pin 3; protects against IEC61000-4-2 ±30kV contact/air ESD. |
| 2 | I/O2 | passive | Protected line 2, connected through a bidirectional TVS diode to common pin 3; protects against IEC61000-4-2 ±30kV contact/air ESD. |
| 3 | COMMON | passive | Common node of both bidirectional TVS diodes shared by lines 1 and 2, drawn without a name in the pin configuration diagram. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOT-23 |
| Category | Circuit Protection |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `SM24C-MS`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `sm24c-ms-etched.step` / `sm24c-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sm24c-ms.step` / `sm24c-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603134023879712768) (5 pp, sha256 `7e8886620acf83a5`, retrieved 2026-10-18, 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/sm24c-ms-datasheet.pdf)