# MJE350G

**JSMSEMI** · Bipolar Transistors - BJT · TO-126

MJE350G from JSMSEMI, in a TO-126. 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 | E | passive | Emitter; emitter-base voltage VEBO is -3 V max and collector current IC is -0.5 A continuous. |
| 2 | C | passive | Collector (also connected to the tab); VCBO and VCEO are -300 V, IC is -0.5 A continuous, and power dissipation is 20 W at TC=25℃. |
| 3 | B | passive | Base; the VCE(sat) is -1.0 V max at IC=-50 mA and IB=-5 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-126 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `MJE350G`
- Footprint: `Package_TO_SOT_THT:TO-126-3_Vertical`
- 3D model: TO-126 (KiCad packages3D, STEP)
- 3D model files: `mje350g-etched.step` / `mje350g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mje350g.step` / `mje350g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](docs/mje350g-datasheet.pdf) (2 pp, sha256 `72c520bfed9f3a2d`, 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/mje350g-datasheet.pdf)