# STP12NK30Z

**STMicroelectronics** · MOSFETs · TO-220-3

STP12NK30Z from STMicroelectronics, in a TO-220-3. 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 | G | input | Gate; VGS rated ±30 V max, with built-in back-to-back Zener diodes to the source for ESD protection (3000 V HBM) and threshold of 3 to 4.5 V at ID = 50 µA. |
| 2 | D | passive | Drain; VDS rated 300 V max, continuous current 9 A at TC = 25°C (36 A pulsed), also connected to the mounting tab. |
| 3 | S | passive | Source; main current return terminal of the MOSFET, with a body diode to the drain rated 9 A continuous (ISD). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-220-3 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `STP12NK30Z`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220-3 (KiCad packages3D, STEP)
- 3D model files: `stp12nk30z-etched.step` / `stp12nk30z-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stp12nk30z.step` / `stp12nk30z.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/8603116714075320320) (8 pp, sha256 `e7d2cbc27dfea4ca`, retrieved 2026-10-01, 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/stp12nk30z-datasheet.pdf)