# HSS3401A

**HUASHUO** · MOSFETs · SOT-23

HSS3401A 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; controls the P-channel MOSFET, with gate-source voltage limited to ±12 V and threshold of -0.5 to -1.3 V (typ. -0.9 V). |
| 2 | S | passive | Source of the P-channel MOSFET; rated for continuous drain current of -4.0 A at TA=25℃ (-3.2 A at 70℃). |
| 3 | D | passive | Drain of the P-channel MOSFET; drain-source voltage rated -30 V, continuous -4.0 A 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 |
|---|---|---|---|---|---|---|---|
| Drain-Source Breakdown Voltage | BVDSS | -30 |  |  | V | VGS=0V, ID=-250uA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 53 | 65 | mΩ | VGS=-4.5V, ID=-4A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 73 | 85 | mΩ | VGS=-2.5V, ID=-3A | 2 |
| Gate Threshold Voltage | VGS(th) | -0.5 | -0.9 | -1.3 | V | VGS=VDS, ID=-250uA | 2 |
| Drain-Source Leakage Current | IDSS |  |  | -1 | µA | VDS=-30V, VGS=0V, TJ=25℃ | 2 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±12V, VDS=0V | 2 |
| Diode Forward Voltage | VSD |  |  | -1.2 | V | VGS=0V, IS=-4A, TJ=25℃ | 2 |
| Drain-Source Voltage | VDS | -30 |  |  | V |  | 1 |
| Gate-Source Voltage | VGS | -12 |  | 12 | V |  | 1 |
| Continuous Drain Current (TA=25℃) | ID@TA=25℃ | -4 |  |  | A |  | 1 |
| Continuous Drain Current (TA=70℃) | ID@TA=70℃ | -3.2 |  |  | A |  | 1 |
| Pulsed Drain Current | IDM | -12 |  |  | A | Pulse width limited by maximum junction temperature | 1 |
| Total Power Dissipation (TA=25℃) | PD@TA=25℃ |  |  | 0.72 | W |  | 1 |
| Total Power Dissipation (TA=70℃) | PD@TA=70℃ |  |  | 0.46 | W |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-Ambient | RθJA |  |  | 175 | ℃/W |  | 1 |
| Thermal Resistance Junction-Ambient | RθJA |  |  | 145 | ℃/W | t ≤5s | 1 |
| Thermal Resistance Junction-Case | RθJC |  |  | 78 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `HSS3401A`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `hss3401a-etched.step` / `hss3401a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hss3401a.step` / `hss3401a.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/8757799377018998784) (6 pp, sha256 `a99190bfd5383aa9`, retrieved 2026-10-18, 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/hss3401a-datasheet.pdf)