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README.md Initial commit: component/mmbt3904tt1g · Ray 4d ago

MMBT3904TT1G

onsemi · Bipolar (BJT) · SOT-416

MMBT3904TT1G from onsemi, in a SOT-416. 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 Control input terminal; rated for maximum 6.0 Vdc emitter-base voltage.
2 EMITTER passive Emitter terminal; source of charge carriers in this NPN silicon transistor.
3 COLLECTOR output Output terminal; rated for maximum 40 Vdc collector-emitter voltage and 200 mA continuous current.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-416
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: MMBT3904TT1G
  • Footprint: Package_TO_SOT_SMD:SOT-416
  • 3D model: SOT-416, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 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: mmbt3904tt1g-etched.step / mmbt3904tt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbt3904tt1g.step / mmbt3904tt1g.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (8 pp, sha256 615a6c2a9c3e0312, retrieved 2026-10-01, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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