# PDTC143ZU

**Nexperia** · Digital Transistors · SOT-323

PDTC143ZU from Nexperia, in a SOT-323. 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 | I | input | Input pin (base) of the resistor-equipped transistor, with input voltage limited to -5 V to 30 V per the limiting values. |
| 2 | GND | power_in | Ground pin, which the datasheet identifies as the emitter, with no separate voltage limit stated for this pin. |
| 3 | O | output | Output pin (collector) of the transistor, rated for an output current of up to 100 mA and a collector-emitter voltage of 50 V with open base. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-323 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `PDTC143ZU`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `pdtc143zu-etched.step` / `pdtc143zu-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pdtc143zu.step` / `pdtc143zu.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/PDTC143ZU.pdf) (11 pp, sha256 `a701c9d0f17392bd`, retrieved 2026-10-09, 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/pdtc143zu-datasheet.pdf)