# AO4812

**TECH PUBLIC** · MOSFETs · SOIC-8

AO4812 from TECH PUBLIC, in a SOIC-8. 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 | S1 | passive | Source of MOSFET 1 (N-channel); 30V VDS and 7A continuous drain current rating per device at TA=25C. |
| 2 | G1 | input | Gate of MOSFET 1; gate-source voltage limited to ±20V, threshold 1V min to 3V max at ID=250uA. |
| 3 | S2 | passive | Source of MOSFET 2 (N-channel); 30V VDS and 7A continuous drain current rating per device at TA=25C. |
| 4 | G2 | input | Gate of MOSFET 2; gate-source voltage limited to ±20V, threshold 1V min to 3V max at ID=250uA. |
| 5 | D2 | passive | Drain of MOSFET 2, tied to pin 6; drain-source voltage max 30V, pulsed drain current 24A. |
| 6 | D2 | passive | Drain of MOSFET 2, tied to pin 5; drain-source voltage max 30V, pulsed drain current 24A. |
| 7 | D1 | passive | Drain of MOSFET 1, tied to pin 8; drain-source voltage max 30V, pulsed drain current 24A. |
| 8 | D1 | passive | Drain of MOSFET 1, tied to pin 7; drain-source voltage max 30V, pulsed drain current 24A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOIC-8 |
| Category | Transistors/Thyristors |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `AO4812`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ao4812-etched.step` / `ao4812-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ao4812.step` / `ao4812.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603063119153950720) (5 pp, sha256 `e4322aab01ad958b`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/ao4812-datasheet.pdf)