# AOT266L

**Alpha & Omega Semicon** · MOSFETs · TO-220

AOT266L from Alpha & Omega Semicon, in a TO-220. 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 ±20 V maximum. |
| 2 | D | passive | Drain (also connected to the tab); drain-source voltage rated 60 V maximum. |
| 3 | S | passive | Source terminal of the N-channel MOSFET. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Alpha & Omega Semicon |
| Package | TO-220 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Drain-Source Breakdown Voltage | BVDSS | 60 |  |  | V | ID=250µA, VGS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | µA | VDS=60V, VGS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 5 | µA | VDS=60V, VGS=0V, TJ=55°C | 2 |
| Gate-Body leakage current | IGSS | -100 |  | 100 | nA | VDS=0V, VGS=±20V | 2 |
| Gate Threshold Voltage | VGS(th) | 2.2 | 2.7 | 3.2 | V | VDS=VGS, ID=250µA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 2.6 | 3.2 | mΩ | VGS=10V, ID=20A, TO220/TO220F | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 4.9 | 5.9 | mΩ | VGS=10V, ID=20A, TJ=125°C | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 2.9 | 3.5 | mΩ | VGS=6V, ID=20A, TO220/TO220F | 2 |
| Diode Forward Voltage | VSD |  | 0.65 | 1 | V | IS=1A, VGS=0V | 2 |
| Maximum Body-Diode Continuous Current | IS |  |  | 140 | A |  | 2 |
| Gate resistance | Rg | 0.4 | 0.9 | 1.4 | Ω | VGS=0V, VDS=0V, f=1MHz | 2 |
| Total Gate Charge | Qg |  | 65 | 90 | nC | VGS=10V, VDS=30V, ID=20A | 2 |
| Forward Transconductance | gFS |  | 80 |  | S | VDS=5V, ID=20A | 2 |
| Input Capacitance | Ciss |  | 5650 |  | pF | VGS=0V, VDS=30V, f=1MHz | 2 |
| Output Capacitance | Coss |  | 720 |  | pF | VGS=0V, VDS=30V, f=1MHz | 2 |
| Reverse Transfer Capacitance | Crss |  | 20 |  | pF | VGS=0V, VDS=30V, f=1MHz | 2 |
| Drain-Source Voltage | VDS |  |  | 60 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 175 | °C |  | 1 |
| Maximum Junction-to-Case | RθJC |  |  | 0.56 | °C/W | Steady-State, AOT266L/AOB266L | 1 |
| Maximum Junction-to-Ambient | RθJA |  |  | 15 | °C/W | t ≤ 10s | 1 |
| Maximum Junction-to-Ambient | RθJA |  |  | 60 | °C/W | Steady-State | 1 |

## CAD (KiCad official)

- Symbol: `AOT266L`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files: `aot266l-etched.step` / `aot266l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `aot266l.step` / `aot266l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Alpha & Omega Semicon datasheet](docs/aot266l-datasheet.pdf) (7 pp, sha256 `0402abebcc3490e8`, retrieved 2026-11-02, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), 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/aot266l-datasheet.pdf)