# 2N5401S

**TECH PUBLIC** · Bipolar (BJT) · SOT-23

2N5401S from TECH PUBLIC, 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 | Base | input | Base of the PNP transistor; emitter-base voltage limit is -6 V (VEBO) and DC gain hFE is 80 min at VCE=-5 V, IC=-1 mA. |
| 2 | Emitter | passive | Emitter of the PNP transistor; collector current is limited to -600 mA (IC) and total power dissipation to 300 mW. |
| 3 | Collector | passive | Collector of the PNP transistor; collector-base voltage limit is -180 V (VCBO) and collector-emitter voltage limit is -160 V (VCEO). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `2N5401S`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `2n5401s-etched.step` / `2n5401s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2n5401s.step` / `2n5401s.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590909171845967872) (4 pp, sha256 `bb65d7c249770976`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/2n5401s-datasheet.pdf)