# KTC8550S-D-HXY

**HXY MOSFET** · Bipolar (BJT) · SOT-23

KTC8550S-D-HXY from HXY MOSFET, 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 | B | passive | Base of the PNP transistor; the emitter-base voltage must not exceed -5 V (VEBO). |
| 2 | E | passive | Emitter of the PNP transistor; the emitter-base voltage is limited to -5 V (VEBO). |
| 3 | C | passive | Collector of the PNP transistor, rated -80 V collector-base (VCBO), -60 V collector-emitter (VCEO), -1 A continuous and -2 A peak current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HXY MOSFET |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `KTC8550S-D-HXY`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ktc8550s-d-hxy-etched.step` / `ktc8550s-d-hxy-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ktc8550s-d-hxy.step` / `ktc8550s-d-hxy.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HXY MOSFET datasheet](docs/ktc8550s-d-hxy-datasheet.pdf) (4 pp, sha256 `8d956a0e00325eb3`, retrieved 2026-10-27, 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/ktc8550s-d-hxy-datasheet.pdf)