# KWNM4002

**KUU** · MOSFETs · SOT-523

KWNM4002 from KUU, in a SOT-523. 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 | Gate | input | Gate terminal of the N-channel MOSFET; continuous gate-source voltage is rated ±20 V. |
| 2 | Source | passive | Source terminal of the N-channel MOSFET, serving as the reference for the gate-source voltage. |
| 3 | Drain | passive | Drain terminal of the N-channel MOSFET; drain-source voltage is rated 30 V with continuous drain current of 100 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KUU |
| Package | SOT-523 |
| 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 |  |  | 30 | V | TA = 25°C | 1 |
| Continuous Gate-Source Voltage | VGS | -20 |  | 20 | V | TA = 25°C | 1 |
| Continuous Drain Current | ID |  |  | 100 | mA | TA = 25°C | 1 |
| Power Dissipation | PD |  |  | 150 | mW | TA = 25°C | 1 |
| Thermal Resistance from Junction to Ambient | RθJA |  |  | 833 | °C /W |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | °C |  | 1 |
| Operating Junction Temperature | TJ |  |  | 150 | °C |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 30 |  |  | Volts | VGS=0V, ID=10uA | 2 |
| Gate-Body Leakage | IGSS | -1 |  | 1 | uA | VDS=0V, VGS=±20V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | µA | VDS=30V, VGS=0V | 2 |
| Gate-Threshold Voltage | Vth(GS) | 0.8 |  | 1.5 | Volts | VDS= 3V, ID=100uA | 2 |
| Drain-Source On-Resistance | RDS(on) |  |  | 8 | Ω | VGS=4V, ID=10mA | 2 |
| Drain-Source On-Resistance | RDS(on) |  |  | 13 | Ω | VGS=2.5V, ID=1mA | 2 |
| Drain-Source Diode Forward Voltage | VSD |  |  | 1.2 | V | IS=115mA, VGS=0V | 2 |
| Forward Trans Conductance | gfs |  | 20 |  | ms | VDS=3V, ID=10mA | 2 |
| Input Capacitance | Ciss |  | 13 |  | pF | VDS = 5V, VGS = 0V, f = 1.0MHz | 2 |
| Output Capacitance | Coss |  | 9 |  | pF | VDS = 5V, VGS = 0V, f = 1.0MHz | 2 |
| Reverse Transfer Capacitance | Crss |  | 4 |  | pF | VDS = 5V, VGS = 0V, f = 1.0MHz | 2 |
| Turn-on Time | tD(on) |  | 15 |  | nS | VDD=5V, RL=500Ω, ID=10mA, VGs=5V, RG = 10Ω | 2 |
| Turn-off Time | tD(off) |  | 80 |  | nS |  | 2 |

## CAD (KiCad official)

- Symbol: `KWNM4002`
- Footprint: `Package_TO_SOT_SMD:SOT-523`
- 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `kwnm4002-etched.step` / `kwnm4002-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `kwnm4002.step` / `kwnm4002.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KUU datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588947592542113793) (3 pp, sha256 `ad14d59de162f47e`, retrieved 2026-10-09, 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/kwnm4002-datasheet.pdf)