# AOSS21115C

**Alpha & Omega Semicon** · MOSFETs · SOT-23-3

AOSS21115C from Alpha & Omega Semicon, in a SOT-23-3. 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; the gate-source voltage VGS is rated ±8V. |
| 2 | S | passive | Source of the MOSFET; maximum body-diode continuous current IS is rated -2A. |
| 3 | D | passive | Drain of the MOSFET; drain-source voltage VDS is rated -20V and continuous drain current is -4.5A at VGS=-4.5V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Alpha & Omega Semicon |
| Package | SOT-23-3 |
| 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 | -20 |  |  | V | ID=-250mA, VGS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -1 | μA | VDS=-20V, VGS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -5 | μA | TJ=55°C | 2 |
| Gate-Body Leakage Current | IGSS | -10 |  | 10 | μA | VDS=0V, VGS=±8V | 2 |
| Gate Threshold Voltage | VGS(th) | -0.15 | -0.55 | -0.95 | V | VDS=VGS, ID=-250mA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 33 | 40 | mΩ | VGS=-4.5V, ID=-4.5A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 43 | 52 | mΩ | TJ=125°C | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 42 | 55 | mΩ | VGS=-2.5V, ID=-4A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 54 | 72 | mΩ | VGS=-1.8V, ID=-3.5A | 2 |
| Diode Forward Voltage | VSD |  | -0.7 | -1 | V | IS=-1A, VGS=0V | 2 |
| Maximum Body-Diode Continuous Current | IS |  |  | -2 | A |  | 2 |
| Gate Resistance | Rg |  | 15 | 30 | Ω | f=1MHz | 2 |
| Total Gate Charge | Qg |  | 8.5 | 17 | nC | VGS=-4.5V, VDS=-10V, ID=-4.5A | 2 |
| Drain-Source Voltage | VDS |  |  | -20 | V | TA=25°C | 1 |
| Gate-Source Voltage | VGS | -8 |  | 8 | V |  | 1 |
| Continuous Drain Current | ID |  |  | -4.5 | A | TA=25°C | 1 |
| Continuous Drain Current | ID |  |  | -3.5 | A | TA=70°C | 1 |
| Pulsed Drain Current | IDM |  |  | -18 | A |  | 1 |
| Power Dissipation | PD |  |  | 1.3 | W | TA=25°C | 1 |
| Power Dissipation | PD |  |  | 0.8 | W | TA=70°C | 1 |
| Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Maximum Junction-to-Ambient | RqJA |  | 70 | 100 | °C/W | t ≤ 10s | 1 |
| Maximum Junction-to-Ambient | RqJA |  | 90 | 125 | °C/W | Steady-State | 1 |
| Maximum Junction-to-Lead | RqJL |  | 63 | 80 | °C/W | Steady-State | 1 |

## CAD (KiCad official)

- Symbol: `AOSS21115C`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `aoss21115c-etched.step` / `aoss21115c-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `aoss21115c.step` / `aoss21115c.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/8590309925923549184) (10 pp, sha256 `ccc4ad37da15d7c4`, retrieved 2026-10-31, 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/aoss21115c-datasheet.pdf)