# HD3401

**High Diode** · MOSFETs · SOT-23

HD3401 from High Diode, 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 of the P-channel enhancement-mode MOSFET; gate-source voltage limit is ±12 V, with threshold VGS(th) of -0.7 V min to -1.3 V max at ID = -250 µA. |
| 2 | S | passive | Source of the P-channel MOSFET; body diode forward current IS is -2 A continuous (ISM -25 A pulsed). |
| 3 | D | passive | Drain of the P-channel MOSFET; VDS is rated -30 V and continuous drain current ID is -4.2 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | High Diode |
| 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 | V(BR)DSS | -30 |  |  | V | VGS = 0V, ID =-250µA | 2 |
| Zero gate voltage drain current | IDSS |  |  | -1 | µA | VDS =-24V,VGS = 0V | 2 |
| Gate-body leakage current | IGSS | -100 |  | 100 | nA | VGS =±12V, VDS = 0V | 2 |
| Gate threshold voltage | VGS(th) | -1.3 |  | -0.7 | V | VDS =VGS, ID =-250µA | 2 |
| Drain-source on-resistance | RDS(on) |  | 44 | 65 | mΩ | VGS =-10V, ID =-4.2A | 2 |
| Drain-source on-resistance | RDS(on) |  | 55 | 75 | mΩ | VGS =-4.5V, ID =-4A | 2 |
| Drain-source on-resistance | RDS(on) |  | 75 | 90 | mΩ | VGS =-2.5V, ID =-1A | 2 |
| Diode forward voltage | VDS |  |  | -1.2 | V | VGS =0V, IS=-4.2A | 2 |
| Diode forward current | IS |  |  | -2 | A |  | 2 |
| Diode pulsed forward current | ISM |  |  | -25 | A |  | 2 |
| Drain-source voltage | VDS |  |  | -30 | V |  | 1 |
| Gate-source voltage | VGS | -12 |  | 12 | V |  | 1 |
| Continuous drain current | ID |  |  | -4.2 | A |  | 1 |
| Power dissipation | PD |  |  | 0.35 | W |  | 1 |
| Junction temperature | TJ |  |  | 150 | ℃ |  | 1 |
| Storage temperature | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal resistance from junction to ambient | RθJA |  |  | 357 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `HD3401`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `hd3401-etched.step` / `hd3401-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hd3401.step` / `hd3401.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [High Diode datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588919834411749376) (5 pp, sha256 `0d42f3e7f3d82877`, retrieved 2026-10-17, 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/hd3401-datasheet.pdf)