# YFW4N65AMJ

**YFW** · MOSFETs · TO-251

YFW4N65AMJ from YFW, in a TO-251. 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 terminal, with a maximum gate-source voltage of ±30 V and a gate threshold voltage of 2 V min to 4 V max at VDS = VGS, ID = 250 µA. |
| 2 | D | passive | Drain terminal, rated for 650 V drain-source voltage and 4 A continuous drain current (16 A pulsed). |
| 3 | S | passive | Source terminal, which carries the body-diode continuous current of up to 4 A (16 A pulsed). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| Package | TO-251 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `YFW4N65AMJ`
- Footprint: `Package_TO_SOT_THT:TO-251-3_Vertical`
- 3D model: TO-251 (KiCad packages3D, STEP)
- 3D model files: `yfw4n65amj-etched.step` / `yfw4n65amj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `yfw4n65amj.step` / `yfw4n65amj.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YFW datasheet](docs/yfw4n65amj-datasheet.pdf) (10 pp, sha256 `4df3598b3df9fa15`, retrieved 2026-10-26, 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/yfw4n65amj-datasheet.pdf)