# YJL3139KAT

**Yangzhou Yangjie Elec Tech** · MOSFETs · SOT-723

YJL3139KAT from Yangzhou Yangjie Elec Tech, in a SOT-723. 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 limit is ±10 V, with VGS(th) of -0.35 V min to -1.1 V max at ID=-250 µA, and the symbol shows an internal back-to-back gate protection diode to source. |
| 2 | S | passive | Source of the P-channel MOSFET; body-diode continuous current is -0.5 A max and the drain-source voltage rating is -20 V. |
| 3 | D | passive | Drain of the P-channel MOSFET; continuous drain current is -0.5 A at TA=25℃ (pulsed -2.5 A) with VDS rated -20 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOT-723 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `YJL3139KAT`
- Footprint: `Package_TO_SOT_SMD:SOT-723`
- 3D model: SOT-723, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.5 mm nominal SOT-723 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `yjl3139kat-etched.step` / `yjl3139kat-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `yjl3139kat.step` / `yjl3139kat.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604448168881385472) (7 pp, sha256 `a9e86619c3b1bb00`, retrieved 2026-10-09, 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/yjl3139kat-datasheet.pdf)