# PMP4201Y

**Nexperia** · Bipolar (BJT) · SOT-363

PMP4201Y from Nexperia, in a SOT-363. 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 | B1 | passive | Base of transistor TR1 (NPN/NPN matched double transistor, first half). |
| 2 | B2 | passive | Base of transistor TR2 (NPN/NPN matched double transistor, second half). |
| 3 | C2 | passive | Collector of transistor TR2. |
| 4 | E2 | passive | Emitter of transistor TR2. |
| 5 | E1 | passive | Emitter of transistor TR1. |
| 6 | C1 | passive | Collector of transistor TR1. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-363 |
| Category | Transistors/Thyristors |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `PMP4201Y`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `pmp4201y-etched.step` / `pmp4201y-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pmp4201y.step` / `pmp4201y.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/PMP4201Y.pdf) (11 pp, sha256 `bc0537f724e6a82f`, 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/pmp4201y-datasheet.pdf)