# WST2005

**Winsok Semicon** · MOSFETs · SOT-323

WST2005 from Winsok Semicon, 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 | D | passive | Drain terminal of the P-channel MOSFET, rated for a Drain-Source Voltage VDS of -20 V with a continuous drain current of -1.6 A at VGS = -4.5 V (Tc = 25 °C) and a pulsed drain current of -5 A. |
| 2 | G | input | Gate terminal of the P-channel MOSFET, with a Gate-Source Voltage limit of ±12 V. |
| 3 | S | passive | Source terminal of the P-channel MOSFET; the datasheet gives no separate source-pin limit beyond the device absolute maximum ratings. |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Drain-Source Voltage | VDS | -20 |  |  | V |  | 1 |
| Gate-Source Voltage | VGS | -12 |  | 12 | V |  | 1 |
| Continuous Drain Current | ID | -1.6 |  |  | A | Tc=25℃, VGS @ -4.5V | 1 |
| Pulsed Drain Current | IDM | -5 |  |  | A |  | 1 |
| Total Power Dissipation | PD |  |  | 350 | mW | TA=25℃ | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | -20 |  |  | V | VGS=0V, ID=-250uA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 145 | 155 | mΩ | VGS=-4.5V, ID=-1A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 150 | 168 | mΩ | VGS=-2.5V, ID=-0.5A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 180 | 220 | mΩ | VGS=-1.8V, ID=-0.3A | 2 |
| Gate Threshold Voltage | VGS(th) | -0.4 | -0.7 | -1 | V | VGS=VDS, ID=-250uA | 2 |
| Drain-Source Leakage Current | IDSS |  |  | -1 | uA | VDS=-20V, VGS=0V, TJ=25℃ | 2 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±12V, VDS=0V | 2 |

## CAD (KiCad official)

- Symbol: `WST2005`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `wst2005-etched.step` / `wst2005-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `wst2005.step` / `wst2005.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Winsok Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588916889271062528) (6 pp, sha256 `ec0fee8825b161ef`, retrieved 2026-10-19, tier: lcsc)
- **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/wst2005-datasheet.pdf)