# STTH50W03CW

**STMicroelectronics** · Fast Recovery / High Efficiency Diodes · TO-247-3

STTH50W03CW from STMicroelectronics, in a TO-247-3. 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 | A1 | passive | Anode of diode 1, rated 25 A average forward current per diode with 300 V repetitive peak reverse voltage. |
| 2 | K | passive | Common cathode of both diodes, which is also connected to the tab, and is rated 300 V VRRM. |
| 3 | A2 | passive | Anode of diode 2, rated 25 A average forward current per diode with 300 V repetitive peak reverse voltage. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-247-3 |
| Category | Diodes |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `STTH50W03CW`
- Footprint: `Package_TO_SOT_THT:TO-247-3_Vertical`
- 3D model: TO-247-3 (KiCad packages3D, STEP)
- 3D model files: `stth50w03cw-etched.step` / `stth50w03cw-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stth50w03cw.step` / `stth50w03cw.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/8603086122368966656) (9 pp, sha256 `96e4fb1f63fb46b7`, 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/stth50w03cw-datasheet.pdf)