# PMBT6428

**Nexperia** · Bipolar Transistors - BJT · SOT-23

PMBT6428 from Nexperia, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | B | input | Base terminal of the NPN BJT. Controls collector current via base drive; VBE(on) typ 560-660 mV at IC = 1 mA. Absolute max VEBO = 6 V (reverse), peak base current IBM ≤ 200 mA. |
| 2 | E | passive | Emitter terminal of the NPN BJT. Common reference for VBE and VCE; normally tied to the lower-potential side of the load or to ground in a common-emitter configuration. |
| 3 | C | passive | Collector terminal of the NPN BJT. Absolute max VCBO = 60 V, VCEO = 50 V, IC = 100 mA (peak ICM = 200 mA). VCEsat ≤ 200 mV at IC = 10 mA / IB = 0.5 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-23 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `PMBT6428`

## CAD (KiCad official)

- Symbol: `PMBT6428`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `pmbt6428-etched.step` / `pmbt6428-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pmbt6428.step` / `pmbt6428.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/PMBT6428.pdf) (7 pp, sha256 `8bf1c20d91ad762e`, retrieved 2026-08-17, tier: manufacturer)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/pmbt6428-datasheet.pdf)