# SMF12CT1G

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-363

SMF12CT1G from TECH PUBLIC, in a SOT-363. 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 I/O line (Note 1 lists pin 1 as an I/O pin); TVS working voltage 12V max VRWM, ±30kV IEC 61000-4-2 ESD. |
| 2 | GND | power_in | Common ground/reference pin of the 5-line TVS array; not an I/O pin per Note 1. |
| 3 | I/O2 | passive | Protected I/O line (Note 1 lists pin 3 as an I/O pin); TVS working voltage 12V max VRWM, ±30kV IEC 61000-4-2 ESD. |
| 4 | I/O3 | passive | Protected I/O line (Note 1 lists pin 4 as an I/O pin); TVS working voltage 12V max VRWM, ±30kV IEC 61000-4-2 ESD. |
| 5 | I/O4 | passive | Protected I/O line (Note 1 lists pin 5 as an I/O pin); TVS working voltage 12V max VRWM, ±30kV IEC 61000-4-2 ESD. |
| 6 | I/O5 | passive | Protected I/O line (Note 1 lists pin 6 as an I/O pin); TVS working voltage 12V max VRWM, ±30kV IEC 61000-4-2 ESD. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-363 |
| Category | Circuit Protection |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `SMF12CT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `smf12ct1g-etched.step` / `smf12ct1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf12ct1g.step` / `smf12ct1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589837311795372032) (4 pp, sha256 `ee87b2a5ba60f25b`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/smf12ct1g-datasheet.pdf)