component
SMMBT3904LT1G
Public Made by Adomby adom
onsemi Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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SMMBT3904LT1G
onsemi · Bipolar (BJT) · SOT-23
SMMBT3904LT1G from onsemi, 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 | input | Base terminal of the NPN transistor; the datasheet gives no separate base current rating, and the related limit is the emitter-base voltage VEBO of 6.0 Vdc maximum. |
| 2 | EMITTER | passive | Emitter terminal of the NPN transistor; the emitter-base voltage is limited to VEBO 6.0 Vdc and the device is rated for 200 mA continuous collector current. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor; rated for VCEO 40 Vdc, VCBO 60 Vdc, 200 mA continuous collector current and 900 mA peak collector current (Note 3). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
SMMBT3904LT1G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
smmbt3904lt1g-etched.step/smmbt3904lt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smmbt3904lt1g.step/smmbt3904lt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (7 pp, sha256
8d63fa245f101a60, 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).
# SMMBT3904LT1G
**onsemi** · Bipolar (BJT) · SOT-23
SMMBT3904LT1G from onsemi, 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 | input | Base terminal of the NPN transistor; the datasheet gives no separate base current rating, and the related limit is the emitter-base voltage VEBO of 6.0 Vdc maximum. |
| 2 | EMITTER | passive | Emitter terminal of the NPN transistor; the emitter-base voltage is limited to VEBO 6.0 Vdc and the device is rated for 200 mA continuous collector current. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor; rated for VCEO 40 Vdc, VCBO 60 Vdc, 200 mA continuous collector current and 900 mA peak collector current (Note 3). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `SMMBT3904LT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `smmbt3904lt1g-etched.step` / `smmbt3904lt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smmbt3904lt1g.step` / `smmbt3904lt1g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [onsemi datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586186881033768960) (7 pp, sha256 `8d63fa245f101a60`, 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/smmbt3904lt1g-datasheet.pdf)