# AO7401

**Alpha Omega Semicon** · MOSFETs · SOT-323

AO7401 from Alpha Omega Semicon, in a SOT-323. 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; drives the P-channel MOSFET with VGS rated ±12V maximum and usable down to -2.5V (RDS(ON) < 200mΩ at VGS=-2.5V). |
| 2 | S | passive | Source of the P-channel MOSFET; body diode continuous current is -0.5A maximum. |
| 3 | D | passive | Drain; VDS rated -30V maximum with continuous drain current of -1.4A at TA=25°C and pulsed -10A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Alpha Omega Semicon |
| Package | SOT-323 |
| 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 Breakdown Voltage | BVDSS | -30 |  |  | V | ID=-250µA, VGS=0V | 2 |
| Gate Threshold Voltage | VGS(th) | -0.6 | -1 | -1.4 | V | VDS=VGS, ID=-250µA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -1 | µA | VDS=-30V, VGS=0V | 2 |
| Zero Gate Voltage Drain Current (TJ=55°C) | IDSS |  |  | -5 | µA | VDS=-30V, VGS=0V, TJ=55°C | 2 |
| Gate-Body Leakage Current | IGSS | -100 |  | 100 | nA | VDS=0V, VGS=±12V | 2 |
| On-State Drain Current | ID(ON) | -10 |  |  | A | VGS=-10V, VDS=-5V | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 92.5 | 115 | mΩ | VGS=-10V, ID=-1.4A | 2 |
| Static Drain-Source On-Resistance (TJ=125°C) | RDS(ON) |  | 130 | 160 | mΩ | VGS=-10V, ID=-1.4A, TJ=125°C | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 110 | 140 | mΩ | VGS=-4.5V, ID=-1.2A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 150 | 200 | mΩ | VGS=-2.5V, ID=-1A | 2 |
| Diode Forward Voltage | VSD |  | -0.78 | -1 | V | IS=-1A, VGS=0V | 2 |
| Maximum Body-Diode Continuous Current | IS |  |  | -0.5 | A |  | 2 |
| Gate Resistance | Rg | 4 | 8 | 12 | Ω | VGS=0V, VDS=0V, f=1MHz | 2 |
| Input Capacitance | Ciss |  | 260 | 315 | pF | VGS=0V, VDS=-15V, f=1MHz | 2 |
| Body Diode Reverse Recovery Time | trr |  | 11.5 | 15 | ns | IF=-1.4A, dI/dt=100A/µs | 2 |
| Total Gate Charge (10V) | Qg (10V) |  | 5.9 | 7.2 | nC | VGS=-10V, VDS=-15V, ID=-1.4A | 2 |
| Total Gate Charge (4.5V) | Qg (4.5V) |  | 2.8 | 3.5 | nC |  | 2 |
| Drain-Source Voltage | VDS | -30 |  |  | V |  | 1 |
| Gate-Source Voltage | VGS | -12 |  | 12 | V |  | 1 |
| Continuous Drain Current | ID | -1.4 |  |  | A | TA=25°C | 1 |
| Continuous Drain Current | ID | -1 |  |  | A | TA=70°C | 1 |
| Pulsed Drain Current | IDM | -10 |  |  | A |  | 1 |
| Power Dissipation | PD |  |  | 0.35 | W | TA=25°C | 1 |
| Power Dissipation | PD |  |  | 0.22 | W | TA=70°C | 1 |
| Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `AO7401`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `ao7401-etched.step` / `ao7401-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ao7401.step` / `ao7401.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/8588881292192178176) (5 pp, sha256 `3f49432d9c233d73`, 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/ao7401-datasheet.pdf)