component
MMBT3904M-JSM
Public Made by Adomby adom
JSMSEMI Bipolar (BJT), SOT-723. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MMBT3904M-JSM
JSMSEMI · Bipolar (BJT) · SOT-723
MMBT3904M-JSM from JSMSEMI, 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 | BASE | input | Base of the NPN transistor; emitter-base voltage limited to 6 V (VEBO) and V(BR)EBO min 6 V at IE=10µA. |
| 2 | EMITTER | passive | Emitter of the NPN transistor; collector current is limited to 0.2 A continuous. |
| 3 | COLLECTOR | passive | Collector of the NPN transistor; VCBO 60 V, VCEO 40 V, IC 0.2 A continuous maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | SOT-723 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
MMBT3904M-JSM - 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:
mmbt3904m-jsm-etched.step/mmbt3904m-jsm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbt3904m-jsm.step/mmbt3904m-jsm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JSMSEMI datasheet (2 pp, sha256
9ee05abf3bb88ed6, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(vision), consensusclaude-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).
# MMBT3904M-JSM
**JSMSEMI** · Bipolar (BJT) · SOT-723
MMBT3904M-JSM from JSMSEMI, 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 | BASE | input | Base of the NPN transistor; emitter-base voltage limited to 6 V (VEBO) and V(BR)EBO min 6 V at IE=10µA. |
| 2 | EMITTER | passive | Emitter of the NPN transistor; collector current is limited to 0.2 A continuous. |
| 3 | COLLECTOR | passive | Collector of the NPN transistor; VCBO 60 V, VCEO 40 V, IC 0.2 A continuous maximum. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | SOT-723 |
| Category | Transistors/Thyristors |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `MMBT3904M-JSM`
- 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: `mmbt3904m-jsm-etched.step` / `mmbt3904m-jsm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmbt3904m-jsm.step` / `mmbt3904m-jsm.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [JSMSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603353241228746752) (2 pp, sha256 `9ee05abf3bb88ed6`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/mmbt3904m-jsm-datasheet.pdf)