component

MMBT3904-G

Public Made by Adom

by adom

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

componenttransistors-thyristorsmmbt3904-gfactory-2.0.0extractor-text
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MMBT3904-G

Changjing · Bipolar (BJT) · SOT-23

MMBT3904-G from Changjing, 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 passive Base terminal of the NPN transistor; the datasheet's absolute maximum ratings are VEBO 6 V and IC 200 mA, and emitter-base breakdown V(BR)EBO is 6 V minimum at IE=10µA.
2 EMITTER passive Emitter terminal of the NPN transistor, with a maximum emitter-base voltage (VEBO) of 6 V per the datasheet ratings table.
3 COLLECTOR passive Collector terminal of the NPN transistor; the datasheet gives VCBO 60 V, VCEO 40 V and IC 200 mA maximum, with total power dissipation PC 200 mW.

Key specifications

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

CAD (KiCad official)

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

Provenance

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

  • Datasheet: Changjing datasheet (4 pp, sha256 d03e1552fcfa439f, 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