# 3404

**HL** · MOSFETs · SOT-23

3404 from HL, 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 absolute maximum, with threshold of 1 V min, 1.5 V typ, 2.5 V max. |
| 2 | S | passive | Source; continuous source diode forward current is 5.5 A max. |
| 3 | D | passive | Drain; drain-source voltage rated 30 V, continuous drain current 5.5 A at TA=25°C, pulsed 23.4 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HL |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `3404`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `3404-etched.step` / `3404-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `3404.step` / `3404.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HL datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590908219471065088) (5 pp, sha256 `20d5fa0f4eb46e87`, 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/3404-datasheet.pdf)