# AO4805-MS

**MSKSEMI** · MOSFETs · SOP-8

AO4805-MS from MSKSEMI, in a SOP-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 P-channel MOSFET 1; VDS rated -30 V and ID -7.1 A. |
| 2 | G1 | input | Gate of P-channel MOSFET 1; VGS maximum ±20 V. |
| 3 | S2 | passive | Source of P-channel MOSFET 2; VDS rated -30 V and ID -7.1 A. |
| 4 | G2 | input | Gate of P-channel MOSFET 2; VGS maximum ±20 V. |
| 5 | D2 | passive | Drain of P-channel MOSFET 2; pulsed drain current IDM -20 A. |
| 6 | D2 | passive | Drain of P-channel MOSFET 2, tied internally with pin 5; pulsed drain current IDM -20 A. |
| 7 | D1 | passive | Drain of P-channel MOSFET 1; pulsed drain current IDM -20 A. |
| 8 | D1 | passive | Drain of P-channel MOSFET 1, tied internally with pin 7; pulsed drain current IDM -20 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | SOP-8 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 8 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper |  | surface of the drain pins. RθJC is guaranteed by design, while RθJA is determined by the board design. The maximum rating presented here is based on mounting on a 1 in 2 pad of 2oz copper. | 3 |

## CAD (KiCad official)

- Symbol: `AO4805-MS`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `ao4805-ms-etched.step` / `ao4805-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ao4805-ms.step` / `ao4805-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](docs/ao4805-ms-datasheet.pdf) (7 pp, sha256 `eda01bb2dab55518`, retrieved 2026-10-27, 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/ao4805-ms-datasheet.pdf)