# STP40NF10L

**STMicroelectronics** · MOSFETs · TO-220

STP40NF10L from STMicroelectronics, in a TO-220. 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; the gate-source voltage is limited to ±17 V absolute maximum, with a gate threshold of 1 V min to 2.5 V max at ID = 250 µA. |
| 2 | D | passive | Drain; drain-source voltage is rated 100 V maximum with 40 A continuous drain current at TC = 25°C. |
| 3 | S | passive | Source; carries up to 40 A continuous source-drain current through the body diode, with 160 A pulsed. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `STP40NF10L`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files: `stp40nf10l-etched.step` / `stp40nf10l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stp40nf10l.step` / `stp40nf10l.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/stp40nf10l.pdf) (12 pp, sha256 `eeae6a120bccd6c6`, retrieved 2026-11-06, 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/stp40nf10l-datasheet.pdf)