# MPS8050S-D-RTK

**KEC Semicon** · Bipolar (BJT) · SOT-23

MPS8050S-D-RTK from KEC Semicon, in a SOT-23. 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 | EMITTER | passive | Emitter terminal of the NPN transistor, with emitter-base voltage rated at VEBO 6 V maximum. |
| 2 | BASE | input | Base terminal of the NPN transistor, with base drive used at IB = 80 mA for IC = 800 mA saturation and emitter-base voltage limited to 6 V. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor, rated for 25 V VCEO, 40 V VCBO, 1.5 A collector current and 350 mW collector power dissipation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KEC Semicon |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `MPS8050S-D-RTK`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mps8050s-d-rtk-etched.step` / `mps8050s-d-rtk-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mps8050s-d-rtk.step` / `mps8050s-d-rtk.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KEC Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586176086116085760) (2 pp, sha256 `9396bc576a166ce8`, retrieved 2026-10-09, tier: lcsc)
- **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/mps8050s-d-rtk-datasheet.pdf)