# A09T

**OSEN** · MOSFETs · SOT-23

A09T from OSEN, 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 | Gate | input | Gate terminal of the N-channel MOSFET; gate-source voltage is rated ±12 V continuous with threshold of 0.6 V min to 1.5 V max at 250 µA. |
| 2 | Drain | passive | Drain terminal of the N-channel MOSFET; drain-source voltage is rated 30 V with 5.8 A continuous and 22 A pulsed drain current. |
| 3 | Source | passive | Source terminal of the N-channel MOSFET; body diode continuous forward current is 5.8 A with VSD of 1.2 V max at IS=1 A. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `A09T`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `a09t-etched.step` / `a09t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `a09t.step` / `a09t.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [OSEN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8760183590225494016) (3 pp, sha256 `87726e99abffd11d`, 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/a09t-datasheet.pdf)