# DO2309A

**DOINGTER** · MOSFETs · SOT-23

DO2309A from DOINGTER, in a SOT-23. 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; gate-source voltage limited to ±20 V with threshold VGS(th) of -1 V to -2.5 V. |
| 2 | D | passive | Drain; drain-source voltage -60 V max, continuous drain current -2 A at TA=25℃ and pulsed -8 A. |
| 3 | S | passive | Source of the P-channel MOSFET; the body diode is connected from drain to source, with continuous diode current -2 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | DOINGTER |
| Package | SOT-23 |
| 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 |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Continuous Drain Current-TA=25℃ | ID |  |  | -2 | A | TA=25℃ | 1 |
| Continuous Drain Current-TA=100℃ | ID |  |  | -1.4 | A | TA=100℃ | 1 |
| Pulsed Drain Current | IDM |  |  | -8 | A |  | 1 |
| Power Dissipation | PD |  |  | 1.56 | W |  | 1 |
| Operating and Storage Junction Temperature Range | TJ, TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance, Junction to Ambient | RƟJA |  |  | 80 | ℃/W |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | -60 |  |  | V | VGS=0V,ID=250μA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -1 | μA | VGS=0V, VDS=-60V | 2 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±20V, VDS=0A | 2 |
| Gate-Source Threshold Voltage | VGS(th) | -1 |  | -2.5 | V | VGS=VDS, ID=250μA | 2 |
| Drain-Source On Resistance | RDS(ON) |  | 155 | 190 | mΩ | VGS=-10V, ID=-2A | 2 |
| Drain-Source On Resistance | RDS(ON) |  | 195 | 220 | mΩ | VGS=-4.5V, ID=-1A | 2 |
| Diode Forward Voltage | VSD |  |  | 1 | V | VGS=0V, ISD=-2A | 2 |
| Continuous Drain Current | IS |  |  | -2 | A | VD=VG=0V | 2 |
| Pulsed Drain Current | ISM |  |  | -8 | A |  | 2 |

## CAD (KiCad official)

- Symbol: `DO2309A`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `do2309a-etched.step` / `do2309a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `do2309a.step` / `do2309a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DOINGTER datasheet](docs/do2309a-datasheet.pdf) (6 pp, sha256 `6afa734f8e6456f9`, retrieved 2026-10-18, 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/do2309a-datasheet.pdf)