# FS3415K

**FUXINSEMI** · MOSFETs · SOT-23

FS3415K from FUXINSEMI, 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 of the P-channel MOSFET, ESD protected up to 2.0KV (HBM), with the RDS(on) of 48mΩ max specified at VGS = -4.5V. |
| 2 | S | passive | Source of the P-channel MOSFET, connected to the body diode anode and the gate ESD protection element in the circuit diagram. |
| 3 | D | passive | Drain of the P-channel MOSFET, rated for VDS of -20V and continuous drain current of -4.2A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | FUXINSEMI |
| 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 | V(BR)DSS | -20 |  |  | V | VGS = 0V, ID = -250µA | 2 |
| Zero gate voltage drain current | IDSS |  |  | -1 | µA | VDS = -20V, VGS = 0V | 2 |
| Gate-body leakage current | IGSS | -15 |  | 15 | µA | VGS = ±12V, VDS = 0V | 2 |
| Gate threshold voltage | VGS(th) | -0.4 |  | -1 | V | VDS = VGS, ID = -250µA | 2 |
| Drain-source on-resistance | RDS(on) |  |  | 48 | mΩ | VGS = -4.5V, ID = -4.0A | 2 |
| Drain-source on-resistance | RDS(on) |  |  | 60 | mΩ | VGS = -2.5V, ID = -4.0A | 2 |
| Drain-source on-resistance | RDS(on) |  |  | 100 | mΩ | VGS = -1.8V, ID = -2.0A | 2 |
| Drain-Source Voltage | VDS |  |  | -20 | V | Ta = 25℃ unless otherwise noted | 2 |
| Gate-Source Voltage | VGS | -8 |  | 8 | V | Ta = 25℃ unless otherwise noted | 2 |
| Continuous Drain Current | ID |  |  | -4.2 | A | Ta = 25℃ unless otherwise noted | 2 |
| Pulsed Drain Current | IDM |  |  | -23 | A | Ta = 25℃ unless otherwise noted | 2 |
| Power Dissipation | PD |  |  | 1.3 | W | Ta = 25℃ unless otherwise noted | 2 |
| Junction Temperature | TJ |  |  | 150 | ℃ |  | 2 |
| Storage Temperature | TSTG | -55 |  | 150 | ℃ |  | 2 |

## CAD (KiCad official)

- Symbol: `FS3415K`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `fs3415k-etched.step` / `fs3415k-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fs3415k.step` / `fs3415k.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FUXINSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588918077727911936) (4 pp, sha256 `54ab91b4560cbd6f`, 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/fs3415k-datasheet.pdf)