# AOD409-MS

**MSKSEMI** · MOSFETs · TO-252-2

AOD409-MS from MSKSEMI, in a TO-252-2. 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 of the P-channel MOSFET, with VGS rated ±20 V and threshold voltage VGS(th) of -1.0 to -2.5 V. |
| 2 | D | passive | Drain, connected to the exposed tab and the middle lead position, with VDS rated -60 V and continuous ID of -25 A at TC=25℃. |
| 3 | S | passive | Source of the P-channel MOSFET, with continuous source (body diode) current rated -25 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MSKSEMI |
| Package | TO-252-2 |
| Category | Transistors/Thyristors |
| 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 Voltage | VDS | -60 |  |  | V |  | 2 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 2 |
| Drain Current - Continuous | ID | -25 |  |  | A | TC=25℃ | 2 |
| Drain Current - Continuous | ID | -16 |  |  | A | TC=100℃ | 2 |
| Drain Current - Pulsed | IDM | -100 |  |  | A | Pulsed (note 1) | 2 |
| Power Dissipation | PD |  |  | 72 | W | TC=25℃ | 2 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 2 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 2 |
| Thermal Resistance Junction to Ambient | RθJA |  |  | 62 | ℃/W |  | 2 |
| Thermal Resistance Junction to Case | RθJC |  |  | 1.73 | ℃/W |  | 2 |
| Drain-Source Breakdown Voltage | BVDSS | -60 |  |  | V | VGS=0V, ID=-250uA | 3 |
| Drain-Source Leakage Current | IDSS |  |  | -1 | uA | VDS=-60V, VGS=0V, TJ=25℃ | 3 |
| Drain-Source Leakage Current | IDSS |  |  | -10 | uA | VDS=-48V, VGS=0V, TJ=125℃ | 3 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±20V, VDS=0V | 3 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 38 | 48 | mΩ | VGS=-10V, ID=-8A | 3 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 46 | 60 | mΩ | VGS=-4.5V, ID=-6A | 3 |
| Gate Threshold Voltage | VGS(th) | -1 | -1.6 | -2.5 | V | VGS=VDS, ID=-250uA | 3 |
| Continuous Source Current | IS |  |  | -25 | A | VG=VD=0V, Force Current | 3 |
| Pulsed Source Current | ISM |  |  | -50 | A |  | 3 |
| Diode Forward Voltage | VSD |  |  | -1.2 | V | VGS=0V, IS=-1A, TJ=25℃ | 3 |

## CAD (KiCad official)

- Symbol: `AOD409-MS`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252-2 (KiCad packages3D, STEP)
- 3D model files: `aod409-ms-etched.step` / `aod409-ms-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `aod409-ms.step` / `aod409-ms.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MSKSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8555434947112116224) (7 pp, sha256 `4ad4acda1057da84`, retrieved 2026-10-17, 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/aod409-ms-datasheet.pdf)