component
MMBT3904T7
Public Made by Adomby adom
Siliup Bipolar (BJT), SOT-723. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMMBT3904T7
Siliup · Bipolar (BJT) · SOT-723
MMBT3904T7 from Siliup, 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 breakdown BVEBO is 6 V min and emitter cut-off current IEBO is 100 nA max at VEB=5V. |
| 2 | EMITTER | passive | Emitter of the NPN transistor; maximum emitter-base voltage VEBO is 6 V. |
| 3 | COLLECTOR | passive | Collector of the NPN transistor; VCEO is 40 V max, VCBO is 60 V max and collector current IC is 200 mA max. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Siliup |
| Package | SOT-723 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
MMBT3904T7 - 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:
mmbt3904t7-etched.step/mmbt3904t7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbt3904t7.step/mmbt3904t7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Siliup datasheet (4 pp, sha256
d6717657a70561e8, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+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).