component

MMBT3904T7

Public Made by Adom

by adom

Siliup Bipolar (BJT), SOT-723. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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MMBT3904T7

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbt3904t7.step / mmbt3904t7.glb are 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, 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