# JMTK4004A

**Jiangsu JieJie Microelectronics** · MOSFETs · TO-252

JMTK4004A from Jiangsu JieJie Microelectronics, in a TO-252. 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; VGSS is limited to ±20 V, and the gate threshold VGS(th) is 1.0 V min to 2.5 V max at VDS=VGS, ID=250 µA. |
| 2 | D | passive | Drain terminal, connected to the mounting tab; VDSS is 40 V max and continuous drain current is 120 A at TC=25 °C. |
| 3 | S | passive | Source terminal; the body diode continuous forward current IS is 120 A max. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Jiangsu JieJie Microelectronics |
| Package | TO-252 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `JMTK4004A`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `jmtk4004a-etched.step` / `jmtk4004a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jmtk4004a.step` / `jmtk4004a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Jiangsu JieJie Microelectronics datasheet](docs/jmtk4004a-datasheet.pdf) (7 pp, sha256 `4a800e0ed094f77c`, retrieved 2026-10-27, 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/jmtk4004a-datasheet.pdf)