# HSK3400

**HUASHUO** · MOSFETs · SOT-89

HSK3400 from HUASHUO, in a SOT-89. 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 rating is ±12 V, with threshold VGS(th) 0.5 to 1.5 V at ID=250uA. |
| 2 | D | passive | Drain (center lead, also connected to the top tab); drain-source voltage 30 V, continuous drain current 6 A at TA=25℃. |
| 3 | S | passive | Source; continuous source current is 5.2 A and pulsed source current is 20 A (body diode). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HUASHUO |
| Package | SOT-89 |
| 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 |  | 1 |
| Gate-Source Voltage | VGS | -12 |  | 12 | V |  | 1 |
| Continuous Drain Current | ID@TA=25℃ |  |  | 6 | A | VGS @ 4.5V | 1 |
| Continuous Drain Current | ID@TA=70℃ |  |  | 5 | A | VGS @ 4.5V | 1 |
| Pulsed Drain Current | IDM |  |  | 24 | A |  | 1 |
| Total Power Dissipation | PD@TA=25℃ |  |  | 1.7 | W |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-ambient | RθJA |  |  | 75 | ℃/W |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 30 |  |  | V | VGS=0V , ID=250uA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 21 | 26 | mΩ | VGS=10V , ID=5.9A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 25 | 30 | mΩ | VGS=4.5V , ID=5A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 35 | 45 | mΩ | VGS=2.5V , ID=4A | 2 |
| Gate Threshold Voltage | VGS(th) | 0.5 | 0.9 | 1.5 | V | VGS=VDS , ID =250uA | 2 |
| Drain-Source Leakage Current | IDSS |  |  | 1 | uA | VDS=24V , VGS=0V , TJ=25℃ | 2 |
| Drain-Source Leakage Current | IDSS |  |  | 5 | uA | VDS=24V , VGS=0V , TJ=55℃ | 2 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±12V , VDS=0V | 2 |
| Continuous Source Current | IS |  |  | 5.2 | A | VG=VD=0V , Force Current | 2 |
| Pulsed Source Current | ISM |  |  | 20 | A |  | 2 |
| Diode Forward Voltage | VSD |  | 0.72 | 1.2 | V | VGS=0V , IS=1A , TJ=25℃ | 2 |

## CAD (KiCad official)

- Symbol: `HSK3400`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `hsk3400-etched.step` / `hsk3400-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hsk3400.step` / `hsk3400.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HUASHUO datasheet](docs/hsk3400-datasheet.pdf) (6 pp, sha256 `8430861fd48bc267`, retrieved 2026-11-05, 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/hsk3400-datasheet.pdf)