component
MMBT3904-G
Public Made by Adomby adom
Changjing Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
MMBT3904-G
Changjing · Bipolar (BJT) · SOT-23
MMBT3904-G from Changjing, in a SOT-23. 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 | BASE | passive | Base terminal of the NPN transistor; the datasheet's absolute maximum ratings are VEBO 6 V and IC 200 mA, and emitter-base breakdown V(BR)EBO is 6 V minimum at IE=10µA. |
| 2 | EMITTER | passive | Emitter terminal of the NPN transistor, with a maximum emitter-base voltage (VEBO) of 6 V per the datasheet ratings table. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor; the datasheet gives VCBO 60 V, VCEO 40 V and IC 200 mA maximum, with total power dissipation PC 200 mW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
MMBT3904-G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbt3904-g-etched.step/mmbt3904-g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbt3904-g.step/mmbt3904-g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (4 pp, sha256
d03e1552fcfa439f, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).
# MMBT3904-G
**Changjing** · Bipolar (BJT) · SOT-23
MMBT3904-G from Changjing, in a SOT-23. 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 | BASE | passive | Base terminal of the NPN transistor; the datasheet's absolute maximum ratings are VEBO 6 V and IC 200 mA, and emitter-base breakdown V(BR)EBO is 6 V minimum at IE=10µA. |
| 2 | EMITTER | passive | Emitter terminal of the NPN transistor, with a maximum emitter-base voltage (VEBO) of 6 V per the datasheet ratings table. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor; the datasheet gives VCBO 60 V, VCEO 40 V and IC 200 mA maximum, with total power dissipation PC 200 mW. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `MMBT3904-G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mmbt3904-g-etched.step` / `mmbt3904-g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmbt3904-g.step` / `mmbt3904-g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586189207563325440) (4 pp, sha256 `d03e1552fcfa439f`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/mmbt3904-g-datasheet.pdf)