component

MMBT4401 2X

Public Made by Adom

by adom

TDSEMIC 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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mmbt4401-2x-etched.step mmbt4401-2x: factory component page (tier=lcsc) · Ray 20d ago
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MMBT4401 2X

TDSEMIC · Bipolar (BJT) · SOT-23

MMBT4401 2X from TDSEMIC, 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 input Base of the NPN switching transistor; Vebo max 6 V, breakdown V(BR)EBO min 6 V at IE=100µA.
2 EMITTER passive Emitter of the NPN transistor; Vcbo 60 V and Vceo 40 V are measured with respect to it/the base.
3 COLLECTOR passive Collector of the NPN transistor; Vceo max 40 V, Vcbo max 60 V, Ic max 600 mA.

Key specifications

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

CAD (KiCad official)

  • Symbol: MMBT4401 2X
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbt4401-2x-etched.step / mmbt4401-2x-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbt4401-2x.step / mmbt4401-2x.glb are the bare package body.

Provenance

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

  • Datasheet: TDSEMIC datasheet (3 pp, sha256 87d872432d408714, retrieved 2026-10-09, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (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