# FDN338P

**HUASHUO** · MOSFETs · SOT-23

FDN338P from HUASHUO, in a SOT-23. 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; gate-source voltage limited to ±12 V, with threshold VGS(th) of -0.3 to -1.0 V at ID=-250uA. |
| 2 | S | passive | Source; continuous source current up to -3 A and diode forward voltage max -1 V at IS=-1A. |
| 3 | D | passive | Drain; drain-source voltage -20 V, continuous drain current -3 A at TA=25℃ and pulsed -12 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HUASHUO |
| Package | SOT-23 |
| 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 |
|---|---|---|---|---|---|---|---|
| Gate Threshold Voltage | VGS(th) | -0.3 | -0.5 | -1 | V | VGS=VDS, ID=-250uA | 2 |
| Drain-Source Breakdown Voltage | BVDSS | -20 |  |  | V | VGS=0V, ID=-250uA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 89 | 100 | mΩ | VGS=-4.5V, ID=-3A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 130 | 140 | mΩ | VGS=-2.5V, ID=-2A | 2 |
| Drain-Source Leakage Current | IDSS |  |  | -1 | uA | VDS=-16V, VGS=0V, TJ=25℃ | 2 |
| Drain-Source Leakage Current | IDSS |  |  | -5 | uA | VDS=-16V, VGS=0V, TJ=55℃ | 2 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±12V, VDS=0V | 2 |
| Continuous Source Current | IS |  |  | -3 | A | VG=VD=0V, Force Current | 2 |
| Diode Forward Voltage | VSD |  |  | -1 | V | VGS=0V, IS=-1A, TJ=25℃ | 2 |
| Drain-Source Voltage | VDS | -20 |  |  | V |  | 1 |
| Gate-Source Voltage | VGS | -12 |  | 12 | V |  | 1 |
| Continuous Drain Current | ID | -3 |  |  | A | TA=25℃, VGS @ -4.5V | 1 |
| Continuous Drain Current | ID | -2.4 |  |  | A | TA=70℃, VGS @ -4.5V | 1 |
| Pulsed Drain Current | IDM | -12 |  |  | A |  | 1 |
| Total Power Dissipation | PD |  |  | 1 | W | TA=25℃ | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-ambient | RθJA |  |  | 125 | ℃/W |  | 1 |
| Thermal Resistance Junction-Case | RθJC |  |  | 80 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `FDN338P`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `fdn338p-etched.step` / `fdn338p-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fdn338p.step` / `fdn338p.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HUASHUO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588906744135495680) (5 pp, sha256 `c693a06b465673ae`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+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/fdn338p-datasheet.pdf)