# DOS9P03

**DOINGTER** · MOSFETs · SOP-8

DOS9P03 from DOINGTER, in a SOP-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 P-channel MOSFET (pins 1-3 are source); VDS rating -30V. |
| 2 | S | passive | Source of the P-channel MOSFET (pins 1-3 are source); VDS rating -30V. |
| 3 | S | passive | Source of the P-channel MOSFET (pins 1-3 are source); VDS rating -30V. |
| 4 | G | input | Gate of the P-channel MOSFET (pin 4); VGS maximum ±20V, threshold -1 to -2.5V. |
| 5 | D | passive | Drain of the P-channel MOSFET (pins 5-8 are drain); continuous current -9A at TC=25℃. |
| 6 | D | passive | Drain of the P-channel MOSFET (pins 5-8 are drain); continuous current -9A at TC=25℃. |
| 7 | D | passive | Drain of the P-channel MOSFET (pins 5-8 are drain); continuous current -9A at TC=25℃. |
| 8 | D | passive | Drain of the P-channel MOSFET (pins 5-8 are drain); continuous current -9A at TC=25℃. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | DOINGTER |
| Package | SOP-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 |  |  | -30 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Continuous Drain Current | ID |  |  | -9 | A | TC=25℃ | 1 |
| Continuous Drain Current | ID |  |  | -6 | A | TC=100℃ | 1 |
| Drain Current-Pulsed | IDM |  |  | -36 | A |  | 1 |
| Power Dissipation | PD |  |  | 3.1 | W |  | 1 |
| Operating and Storage Junction Temperature Range | TJ, TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance, Junction to Ambient | RθJA |  |  | 40 | ℃/W |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | -30 |  |  | V | VGS=0V,ID=250μA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -1 | μA | VGS=0V, VDS=-30V | 2 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±20V, VDS=0A | 2 |
| Gate-Source Threshold Voltage | VGS(th) | -1 | -1.5 | -2.5 | V | VGS=VDS, ID=250μA | 2 |
| Drain-Source On Resistance | RDS(ON) |  | 19 | 25 | mΩ | VGS=-10V,ID=-10A | 2 |
| Drain-Source On Resistance | RDS(ON) |  | 27 | 40 | mΩ | VGS=-4.5V,ID=-5A | 2 |
| Diode Forward Voltage | VSD |  |  | -1.2 | V | VGS=0V,IS=-12A | 2 |

## CAD (KiCad official)

- Symbol: `DOS9P03`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `dos9p03-etched.step` / `dos9p03-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dos9p03.step` / `dos9p03.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DOINGTER datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604432054759276544) (5 pp, sha256 `56aadd04a8a01509`, retrieved 2026-10-17, 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/dos9p03-datasheet.pdf)