# HSU4054

**HUASHUO** · MOSFETs · TO-252-2L

HSU4054 from HUASHUO, in a TO-252-2L. 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; controls the channel, with gate-source voltage rated ±20 V and threshold 1.2 V min to 2.2 V max at ID=250uA. |
| 2 | D | passive | Drain, connected to the exposed tab (the shortened middle lead position); drain-source voltage rated 40 V and continuous current 50 A at TC=25℃. |
| 3 | S | passive | Source; continuous source current up to 50 A with diode forward voltage max 1.2 V at IS=1A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HUASHUO |
| Package | TO-252-2L |
| 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 |  |  | 40 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Continuous Drain Current | ID@TC=25℃ |  |  | 50 | A | TC=25℃ | 1 |
| Continuous Drain Current | ID@TC=100℃ |  |  | 31 | A | TC=100℃ | 1 |
| Pulsed Drain Current | IDM |  |  | 90 | A |  | 1 |
| Single Pulse Avalanche Energy | EAS |  |  | 68 | mJ | VDD=25V,VGS=10V,L=0.1mH,IAS=37A | 1 |
| Avalanche Current | IAS |  |  | 37 | A |  | 1 |
| Total Power Dissipation | PD@TC=25℃ |  |  | 70 | W | TC=25℃ | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-ambient (Steady State) | RθJA |  |  | 55 | ℃/W | Steady State; surface mounted on 1 inch FR-4 board with 2OZ copper (note 1) | 1 |
| Thermal Resistance Junction-Case | RθJC |  |  | 1.7 | ℃/W |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 40 |  |  | V | VGS=0V , ID=250uA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 4.7 | 6.5 | mΩ | VGS=10V , ID=15A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 7.5 | 10.5 | mΩ | VGS=4.5V , ID=15A | 2 |
| Gate Threshold Voltage | VGS(th) | 1.2 | 1.9 | 2.2 | V | VGS=VDS , ID=250uA | 2 |
| Drain-Source Leakage Current | IDSS |  |  | 1 | uA | VDS=32V , VGS=0V , TJ=25℃ | 2 |
| Drain-Source Leakage Current | IDSS |  |  | 5 | uA | VDS=32V , VGS=0V , TJ=55℃ | 2 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±20V , VDS=0V | 2 |
| Continuous Source Current | IS |  |  | 50 | A | VG=VD=0V , Force Current | 2 |
| Diode Forward Voltage | VSD |  |  | 1.2 | V | VGS=0V , IS=1A , TJ=25℃ | 2 |

## CAD (KiCad official)

- Symbol: `HSU4054`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252-2L (KiCad packages3D, STEP)
- 3D model files: `hsu4054-etched.step` / `hsu4054-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hsu4054.step` / `hsu4054.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HUASHUO datasheet](docs/hsu4054-datasheet.pdf) (6 pp, sha256 `82cb33a079ccc943`, 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/hsu4054-datasheet.pdf)