# STF8NM50N

**STMicroelectronics** · MOSFETs · TO-220FP

STF8NM50N from STMicroelectronics, in a TO-220FP. 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 terminal; gate-source voltage is limited to ±25 V (VGS absolute maximum) with a typical threshold of 2 to 4 V at ID = 250 µA. |
| 2 | D | passive | Drain terminal; drain-source voltage is rated 500 V maximum and continuous drain current is 5 A at TC = 25 °C. |
| 3 | S | passive | Source terminal; source-drain diode current is 5 A continuous and 20 A pulsed. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `STF8NM50N`
- Footprint: `Package_TO_SOT_THT:TO-220F-3_Vertical`
- 3D model: TO-220FP (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/stf8nm50n.pdf) (11 pp, sha256 `60794c4fa0970b79`, retrieved 2026-10-27, tier: manufacturer)
- **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/stf8nm50n-datasheet.pdf)