# WNM2021

**TECH PUBLIC** · MOSFETs · SOT-323

WNM2021 from TECH PUBLIC, 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 | G | input | Gate; ESD protected up to 2KV, VGS rated ±8 V, gate threshold voltage 0.5 V min to 1.1 V max at VDS=VGS, ID=250 µA. |
| 2 | S | passive | Source; connects to the body diode anode and the ESD protection diode in the circuit diagram. |
| 3 | D | passive | Drain; VDS rated 20 V, continuous drain current 0.9 A (1.5 A pulsed), RDS(ON) typ. 250 mΩ at VGS=4.5 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `WNM2021`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `wnm2021-etched.step` / `wnm2021-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `wnm2021.step` / `wnm2021.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/8588954935036170240) (5 pp, sha256 `f2409d7aa9aac61b`, 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/wnm2021-datasheet.pdf)