# AO4354

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

AO4354 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 terminal of the 30V N-channel MOSFET; the datasheet lists VDS = 30 V and VGS = ±20 V as absolute maximum ratings for the device. |
| 2 | S | passive | Source terminal of the 30V N-channel MOSFET; the datasheet lists VDS = 30 V and VGS = ±20 V as absolute maximum ratings for the device. |
| 3 | S | passive | Source terminal of the 30V N-channel MOSFET; the datasheet lists VDS = 30 V and VGS = ±20 V as absolute maximum ratings for the device. |
| 4 | G | input | Gate terminal of the MOSFET; the gate-source voltage is rated at ±20 V. |
| 5 | D | passive | Drain terminal of the 30V N-channel MOSFET; the datasheet specifies ID = 23 A at VGS = 10 V. |
| 6 | D | passive | Drain terminal of the 30V N-channel MOSFET; the datasheet specifies ID = 23 A at VGS = 10 V. |
| 7 | D | passive | Drain terminal of the 30V N-channel MOSFET; the datasheet specifies ID = 23 A at VGS = 10 V. |
| 8 | D | passive | Drain terminal of the 30V N-channel MOSFET; the datasheet specifies ID = 23 A at VGS = 10 V. |

## 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 Breakdown Voltage | BVDSS | 30 |  |  | V | ID=250µA, VGS=0V | 2 |
| Gate-Body leakage current | IGSS |  |  | 100 | nA | VDS=0V, VGS=±20V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 5 | µA | VDS=30V, VGS=0V, TJ=55°C | 2 |
| Gate Threshold Voltage | VGS(th) | 1.2 | 1.8 | 2.2 | V | VDS=VGS, ID=250µA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 3 | 3.7 | mΩ | VGS=10V, ID=20A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 4.1 | 5.3 | mΩ | VGS=4.5V, ID=20A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 4.1 | 5 | mΩ | TJ=125°C | 2 |
| Diode Forward Voltage | VSD |  | 0.7 | 1 | V | IS=1A, VGS=0V | 2 |
| Maximum Body-Diode Continuous Current | IS |  |  | 4 | A |  | 2 |
| Gate resistance | Rg | 0.9 | 1.8 | 2.7 | Ω | VGS=0V, VDS=0V, f=1MHz | 2 |
| Total Gate Charge (10V) | Qg (10V) |  | 36 | 49 | nC | VGS=10V, VDS=15V, ID=20A | 2 |
| Total Gate Charge (4.5V) | Qg (4.5V) |  | 17 | 23 | nC |  | 2 |
| Drain-Source Voltage | VDS |  |  | 30 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| VDS Spike | VSPIKE |  |  | 36 | V | 100ns | 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 |  |  | 1.2 | W | TA=100°C | 1 |
| Avalanche energy | EAS |  |  | 37 | mJ | L=0.1mH | 1 |
| Maximum Junction-to-Ambient (t ≤ 10s) | RθJA |  | 31 | 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 |

## CAD (KiCad official)

- Symbol: `AO4354`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `ao4354-etched.step` / `ao4354-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ao4354.step` / `ao4354.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/8586175078916624384) (5 pp, sha256 `4abf5966b799da43`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/ao4354-datasheet.pdf)