# STB28NM50N

**STMicroelectronics** · MOSFETs · D2PAK

STB28NM50N from STMicroelectronics, in a D2PAK. 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 of the N-channel MOSFET; the datasheet gives a maximum gate-source voltage of ±25 V (VGS). |
| 2 | D | passive | Drain terminal of the N-channel MOSFET, rated 500 V drain-source voltage (VDS) and 21 A continuous drain current at TC = 25 °C. |
| 3 | S | passive | Source terminal of the N-channel MOSFET, rated for a 21 A continuous source-drain current and 84 A pulsed source-drain current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | D2PAK |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `STB28NM50N`
- Footprint: `Package_TO_SOT_SMD:TO-263-2`
- 3D model: D2PAK (KiCad packages3D, STEP)
- 3D model files: `stb28nm50n-etched.step` / `stb28nm50n-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stb28nm50n.step` / `stb28nm50n.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/stb28nm50n.pdf) (22 pp, sha256 `4dec8558901dd3c4`, retrieved 2026-10-08, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/stb28nm50n-datasheet.pdf)