component

MMBT3904-7-F

Public Made by Adom

by adom

Diodes Incorporated Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs mmbt3904-7-f: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers mmbt3904-7-f: viewers · Ray 1mo ago
hero-provenance.json Document MMBT3904 hero source hashes and review limits · John Lauer 26d ago
mmbt3904-7-f-etched.fit.json mmbt3904-7-f: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
mmbt3904-7-f-etched.glb mmbt3904-7-f: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
mmbt3904-7-f-etched.step mmbt3904-7-f: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
mmbt3904-7-f-hero.glb Add canonical footprint artwork to MMBT3904 hero · John Lauer 26d ago
mmbt3904-7-f-hero.overlay.json Add canonical footprint artwork to MMBT3904 hero · John Lauer 26d ago
mmbt3904-7-f.glb Publish 0.1.0 · Ray 1mo ago
mmbt3904-7-f.kicad_mod Publish 0.1.0 · Ray 1mo ago
mmbt3904-7-f.kicad_sym Publish 0.1.0 · Ray 1mo ago
mmbt3904-7-f.lbr Publish 0.1.0 · Ray 1mo ago
mmbt3904-7-f.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.1.0 · Ray 1mo ago
page.json Use annotated MMBT3904 hero while retaining clean board model · John Lauer 26d ago
README.md Document MMBT3904 hero source hashes and review limits · John Lauer 26d ago

MMBT3904-7-F

Diodes Incorporated · Bipolar (BJT) · SOT-23

MMBT3904-7-F from Diodes Incorporated, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Base input NPN transistor control input with DC current gain (hFE) of 40-300 A/A and base-emitter saturation voltage (VBE(sat)) maximum 0.95V at IC = 50mA, IB = 5mA.
2 Emitter passive Emitter terminal with maximum emitter-base voltage (VEBO) rating of 6V, forward voltage approximately 0.85V at saturation.
3 Collector passive Collector terminal with maximum collector current (IC) rating of 200 mA, maximum collector-emitter voltage (VCEO) of 40V, maximum collector-base voltage (VCBO) of 60V.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: MMBT3904-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbt3904-7-f-etched.step / mmbt3904-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbt3904-7-f.step / mmbt3904-7-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (7 pp, sha256 4dc9117615e6d219, retrieved 2026-09-21, 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

Annotated 3D hero

The hero adds canonical translucent pad outlines, footprint silkscreen/pin1 and Base/Emitter/Collector labels to the retained marked KiCad-derived physical model. The clean board model and STEP files are unchanged. Per-file provenance records input/output hashes and generator identity; overlay metadata records the artwork. Canonical viewer top and underside views were inspected. This is a presentation repair, not fresh physical qualification. Component issues.