# AO4480

**Alpha Omega Semicon** · MOSFETs · SOIC-8

AO4480 from Alpha Omega Semicon, in a SOIC-8. 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 of the N-channel MOSFET, shown on the SOIC-8 top view, with the pin-1 dot at this end. |
| 2 | S | passive | Source of the N-channel MOSFET, shown on the SOIC-8 top view. |
| 3 | S | passive | Source of the N-channel MOSFET, shown on the SOIC-8 top view. |
| 4 | G | input | Gate, ESD protected (4KV HBM), with a maximum gate-source voltage of ±20V. |
| 5 | D | passive | Drain, rated for VDS 40V and 14A continuous at TA=25°C. |
| 6 | D | passive | Drain, rated for VDS 40V and 14A continuous at TA=25°C. |
| 7 | D | passive | Drain, rated for VDS 40V and 14A continuous at TA=25°C. |
| 8 | D | passive | Drain, rated for VDS 40V and 14A continuous at TA=25°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Alpha Omega Semicon |
| Package | SOIC-8 |
| Category | Transistors/Thyristors |
| Pins | 8 |

## 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 |  |  | 40 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Power Dissipation | PD |  |  | 3.1 | W | TA=25°C | 1 |
| Power Dissipation | PD |  |  | 2 | W | TA=70°C | 1 |
| Continuous Drain Current | IDSM |  |  | 14 | A | TA=25°C | 1 |
| Continuous Drain Current |  |  |  | 11 | A | TA=70°C | 1 |
| Pulsed Drain Current | IDM |  |  | 70 | A |  | 1 |
| Avalanche Current | IAR |  |  | 30 | A |  | 1 |
| Repetitive Avalanche Energy | EAR |  |  | 135 | mJ | 0.3mH | 1 |
| Maximum Junction-to-Ambian t≤10s | RθJA |  | 30 | 40 | °C/W | t ≤ 10s | 1 |
| Maximum Junction-to-Ambient Steady-State | RθJA |  | 59 | 75 | °C/W | Steady-State | 1 |
| Maximum Junction-to-Lead Steady-State | RθJL |  | 16 | 24 | °C/W | Steady-State | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 40 |  |  | V | ID=250uA, VGS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | uA | VDS=32V, VGS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 5 | uA | VDS=32V, VGS=0V, TJ=55°C | 2 |
| Gate-Body leakage current | IGSS | -100 |  | 100 | µA | VDS=0V, VGS=±20V | 2 |
| Gate Threshold Voltage | VGS(th) | 1 | 2 | 3 | V | VDS=VGS ID=250µA | 2 |
| On state drain current | ID(ON) | 70 |  |  | A | VGS=10V, VDS=5V | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 9 | 11.5 | mΩ | VGS=10V, ID=14A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  |  | 13 | mΩ | VGS=10V, ID=14A, TJ=125°C | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 12 | 15.5 | mΩ | VGS=4.5V, ID=5A | 2 |
| Diode Forward Voltage | VSD |  | 0.7 | 1 | V | IS=1A, VGS=0V | 2 |
| Maximum Body-Diode Continuous Current | IS |  |  | 4 | A |  | 2 |
| Input Capacitance | Ciss |  | 1600 | 1920 | pF | VGS=0V, VDS=20V, f=1MHz | 2 |

## CAD (KiCad official)

- Symbol: `AO4480`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ao4480-etched.step` / `ao4480-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ao4480.step` / `ao4480.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/8588886922802028544) (4 pp, sha256 `396623e3868f3183`, 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/ao4480-datasheet.pdf)