# STP4403

**STANSON Tech** · MOSFETs · SOP-8

STP4403 from STANSON Tech, 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, tied to pins 2 and 3; drain-source voltage rated -20 V. |
| 2 | S | passive | Source of the P-channel MOSFET, tied to pins 1 and 3; continuous source (diode) current is -2.3 A. |
| 3 | S | passive | Source of the P-channel MOSFET, tied to pins 1 and 2; connects to the body diode anode side. |
| 4 | G | input | Gate of the P-channel MOSFET; gate-source voltage rated ±12 V with threshold of -0.35 V to -0.9 V. |
| 5 | D | passive | Drain of the P-channel MOSFET, tied to pins 6, 7 and 8; continuous drain current -10.0 A at TA=25℃. |
| 6 | D | passive | Drain of the P-channel MOSFET, tied to pins 5, 7 and 8; pulsed drain current -30 A. |
| 7 | D | passive | Drain of the P-channel MOSFET, tied to pins 5, 6 and 8; RDS(on) 30 mΩ max at VGS=-4.5 V. |
| 8 | D | passive | Drain of the P-channel MOSFET, tied to pins 5, 6 and 7; drain-source breakdown voltage -20 V min. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STANSON Tech |
| 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 |
|---|---|---|---|---|---|---|---|
| Gate-Source Voltage | VGSS | -12 |  | 12 | V |  | 2 |
| Operation Junction Temperature | TJ | -55 |  | 150 | ℃ |  | 2 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 2 |
| Gate Threshold Voltage | VGS(th) |  | -0.35 | -0.9 | V | VDS=VGS,ID=-250uA | 3 |
| Drain-source On-Resistance | RDS(on) |  | 22 | 27 | mΩ | VGS=-4.5V,ID=-10A | 3 |
| Drain-source On-Resistance | RDS(on) |  | 32 | 35 | mΩ | VGS=-2.5V,ID=-8.6A | 3 |
| Drain-source On-Resistance | RDS(on) |  | 43 | 48 | mΩ | VGS=-1.8V,ID=-7.6A | 3 |
| Diode Forward Voltage | VSD |  | -0.8 | -1.2 | V | IS=-2.5A,VGS=0V | 3 |
| Total Gate Charge | Qg |  | 30 | 45 | nC | VDS=-10V,VGS=-5V ID≡-10.0A | 3 |
| Turn-On Time (delay) | td(on) |  | 25 | 40 | nS | VDD=-10V,RL=15Ω ID=-1A,VGEN=-4.5V RG=6Ω | 3 |
| Turn-On Time (rise) | tr |  | 45 | 70 | nS | VDD=-10V,RL=15Ω ID=-1A,VGEN=-4.5V RG=6Ω | 3 |
| Turn-Off Time (delay) | td(off) |  | 145 | 240 | nS | VDD=-10V,RL=15Ω ID=-1A,VGEN=-4.5V RG=6Ω | 3 |
| Turn-Off Time (fall) | tf |  | 70 | 115 | nS | VDD=-10V,RL=15Ω ID=-1A,VGEN=-4.5V RG=6Ω | 3 |
| Drain-Source Voltage | VDSS |  | -20 |  | V |  | 2 |
| Continuous Drain Current | ID |  | -10 |  | A | TJ=150℃, TA=25℃ | 2 |
| Continuous Drain Current | ID |  | -8 |  | A | TJ=150℃, TA=70℃ | 2 |
| Pulsed Drain Current | IDM |  | -30 |  | A |  | 2 |
| Continuous Source Current (Diode Conduction) | IS |  | -2.3 |  | A |  | 2 |
| Power Dissipation | PD |  | 2.8 |  | W | TA=25℃ | 2 |
| Power Dissipation | PD |  | 1.8 |  | W | TA=70℃ | 2 |
| Thermal Resistance-Junction to Ambient | RθJA |  | 70 |  | ℃/W |  | 2 |
| Drain-Source Breakdown Voltage | V(BR)DSS |  | -20 |  | V | VGS=0V,ID=-250uA | 3 |
| Zero Gate Voltage Drain Current | IDSS |  | -1 |  | uA | VDS=-16V,VGS=0V | 3 |
| Zero Gate Voltage Drain Current (TJ=55℃) | IDSS |  | -10 |  | uA | VDS=-20V,VGS=0V TJ=55℃ | 3 |
| On-State Drain Current | ID(on) |  | -20 |  | A | VDS=-5V,VGS=-4.5V | 3 |
| Forward Transconductance | gfs |  | 36 |  | S | VDS=-5.0V,ID=-10A | 3 |
| Gate-Source Charge | Qgs |  | 4.5 |  | nC | VDS=-10V,VGS=-5V ID≡-10.0A | 3 |
| Gate-Drain Charge | Qgd |  | 8 |  | nC | VDS=-10V,VGS=-5V ID≡-10.0A | 3 |
| Input Capacitance | Ciss |  | 2670 |  | pF | VDS=-10V,VGS=0V f=1MHz | 3 |
| Output Capacitance | Coss |  | 520 |  | pF | VDS=-10V,VGS=0V f=1MHz | 3 |
| Reverse Transfer Capacitance | Crss |  | 480 |  | pF | VDS=-10V,VGS=0V f=1MHz | 3 |

## CAD (KiCad official)

- Symbol: `STP4403`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `stp4403-etched.step` / `stp4403-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stp4403.step` / `stp4403.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STANSON Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588911297769037824) (6 pp, sha256 `e0f261b0bd7cd4ff`, 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/stp4403-datasheet.pdf)