# AONS66406

**Alpha Omega Semicon** · MOSFETs · DFN-8(5x6)

AONS66406 from Alpha Omega Semicon, in a DFN-8(5x6). 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 | S | passive | Source terminal of the 40V N-channel MOSFET; pin 1 is the top-view orientation marker (PIN1) on the package drawing. |
| 2 | S | passive | Source terminal of the 40V N-channel MOSFET, bonded in parallel with pins 1 and 3 on the DFN5x6 package. |
| 3 | S | passive | Source terminal of the 40V N-channel MOSFET, bonded in parallel with pins 1 and 2 on the DFN5x6 package. |
| 4 | G | input | Gate terminal; gate-source voltage is rated to ±20V per the absolute maximum ratings. |
| 5 | D | passive | Drain terminal of the MOSFET; drain-source voltage is rated 40V (BVDSS minimum 40V). |
| 6 | D | passive | Drain terminal of the MOSFET, bonded in parallel with pins 5, 7 and 8 on the DFN5x6 package. |
| 7 | D | passive | Drain terminal of the MOSFET, bonded in parallel with pins 5, 6 and 8 on the DFN5x6 package. |
| 8 | D | passive | Drain terminal of the MOSFET, bonded in parallel with pins 5, 6 and 7 on the DFN5x6 package. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Alpha Omega Semicon |
| Package | DFN-8(5x6) |
| Category | Transistors/Thyristors |
| Pins | 9 |

## CAD (KiCad official)

- Symbol: `AONS66406`
- Footprint: `Package_DFN_QFN:DFN-S-8-1EP_6x5mm_P1.27mm`
- 3D model: DFN-8(5x6) (KiCad packages3D, STEP)
- 3D model files: `aons66406-etched.step` / `aons66406-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `aons66406.step` / `aons66406.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Alpha Omega Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589972577134546944) (6 pp, sha256 `2b00096249da326f`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/aons66406-datasheet.pdf)