# MJ15023G-JSM

**JSMSEMI** · Bipolar Transistors - BJT · TO-3

MJ15023G-JSM from JSMSEMI, in a TO-3. 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 | B | input | Base; the datasheet symbol shows pin 1 as the base, with IB rated at -5 A maximum and VEBO of -5 V. |
| 2 | E | passive | Emitter; the datasheet symbol shows pin 2 as the emitter, with VEBO of -5 V (open collector). |
| 3 | C | passive | Collector, connected to the metal case/mounting flange; IC is -16 A continuous and -30 A peak, VCEO is -200 V (MJ15023G) or -250 V (MJ15025G). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-3 |
| Category | Triode/MOS Tube/Transistor |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector-base voltage | VCBO |  |  | -350 | V | Open emitter | 1 |
| Collector-emitter voltage | VCEO |  |  | -200 | V | Open base | 1 |
| Emitter-base voltage | VEBO |  |  | -5 | V | Open collector | 1 |
| Collector current | IC |  |  | -16 | A |  | 1 |
| Collector current-peak | ICM |  |  | -30 | A |  | 1 |
| Base current | IB |  |  | -5 | A |  | 1 |
| Total power dissipation | PD |  |  | 250 | W | TC=25 | 1 |
| Junction temperature | Tj |  |  | 150 | °C |  | 1 |
| Storage temperature | Tstg | -65 |  | 200 | °C |  | 1 |
| Thermal resistance junction to case | Rth j-c |  |  | 0.7 | /W |  | 1 |
| Collector-emitter sustaining voltage | VCEO(SUS) |  |  | -200 | V | IC=0.1A; IB=0 | 2 |
| Collector-emitter saturation voltage | VCEsat-1 |  |  | -1.4 | V | IC=8A; IB=0.8A | 2 |
| Collector-emitter saturation voltage | VCEsat-2 |  |  | -4 | V | IC=16A; IB=3.2A | 2 |
| Base-emitter on voltage | VBE |  |  | -2.2 | V | IC=8A; VCE=4V | 2 |
| Collector cut-off current | ICEO |  |  | -0.5 | mA | VCE=150V; IB=0 | 2 |
| Collector cut-off current | ICEX |  |  | -0.25 | mA | VCE=200V; VBE(off)=1.5V | 2 |
| Emitter cut-off current | IEBO |  |  | -0.5 | mA | VEB=5V; IC=0 | 2 |
| DC current gain | hFE-1 | 15 |  | 60 |  | IC=8A; VCE=4V | 2 |
| DC current gain | hFE-2 | 5 |  |  |  | IC=16A; VCE=4V | 2 |
| Second breakdown collector current | Is/b | -5 |  |  | A | VCE=50Vdc, t=0.5 s, nonrepetitive | 2 |
| Second breakdown collector current | Is/b | -2 |  |  | A | VCE=80Vdc, t=0.5 s, nonrepetitive | 2 |
| Output capacitance | COB |  |  | 500 | pF | IE=0; VCB=10V; f=1.0MHz | 2 |
| Transition frequency | fT | 4 |  |  | MHz | IC=1A; VCE=10V; f=1.0MHz | 2 |

## CAD (KiCad official)

- Symbol: `MJ15023G-JSM`
- Footprint: `Package_TO_SOT_THT:TO-3`
- 3D model: TO-3 (KiCad packages3D, STEP)
- 3D model files: `mj15023g-jsm-etched.step` / `mj15023g-jsm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mj15023g-jsm.step` / `mj15023g-jsm.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](docs/mj15023g-jsm-datasheet.pdf) (4 pp, sha256 `b16853ea95d74061`, 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/mj15023g-jsm-datasheet.pdf)