# FSS2301M

**FOSAN** · MOSFETs · SOT-23

FSS2301M from FOSAN, 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 is limited to ±10 V, with a threshold VGS(th) of -0.4 to -1 V at ID = -250 uA. |
| 2 | S | passive | Source of the P-channel MOSFET; the body diode forward drop VSD is at most -1.2 V at ISD = -2 A. |
| 3 | D | passive | Drain; drain-source voltage is rated -20 V, with continuous drain current of -2.8 A and pulsed drain current of -8 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | FOSAN |
| 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 Breakdown Voltage | BVDSS | -20 |  |  | V | ID = -250uA, VGS=0V | 2 |
| Gate Threshold Voltage | VGS(th) | -0.4 | -0.6 | -1 | V | ID = -250uA, VGS= VDS | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | 1 | uA | VGS=0V, VDS= -20V | 2 |
| Gate Body Leakage | IGSS |  |  | 100 | nA | VGS=+10V, VDS=0V | 2 |
| Static Drain-Source On-State Resistance | RDS(ON) |  | 86 | 115 | mΩ | ID= -2A, VGS= -4.5V | 2 |
| Static Drain-Source On-State Resistance | RDS(ON) |  | 120 | 150 | mΩ | ID= -1.5A, VGS= -2.5V | 2 |
| Static Drain-Source On-State Resistance | RDS(ON) |  | 165 | 250 | mΩ | ID= -1A, VGS= -1.8V | 2 |
| Diode Forward Voltage Drop | VSD |  |  | -1.2 | V | ISD= -2A, VGS=0V | 2 |
| Drain Current (continuous) | ID |  |  | -2.8 | A | TC = 25°C | 1 |
| Drain Current (pulsed) | IDM |  |  | -8 | A |  | 1 |
| Gate-Source Voltage | VGS |  |  | 10 | V |  | 1 |
| Total Device Dissipation | PD |  |  | 700 | mW | TA = 25°C | 1 |
| Junction/Storage Temperature | TJ,Tstg | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-Ambient | RΘJA |  |  | 178 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `FSS2301M`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `fss2301m-etched.step` / `fss2301m-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fss2301m.step` / `fss2301m.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FOSAN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757233914958094336) (4 pp, sha256 `ea6d99f075ed1a57`, retrieved 2026-10-09, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/fss2301m-datasheet.pdf)