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Contents

README

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FMMT720

Changjing · Bipolar (BJT) · SOT-23

FMMT720 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 input Base terminal of the PNP transistor; the datasheet rates base current at -0.5 A (IB, absolute maximum).
2 EMITTER passive Emitter terminal of the PNP transistor; the datasheet gives emitter-base breakdown of -5 V (VEBO) and does not state a separate emitter current limit.
3 COLLECTOR passive Collector terminal of the PNP transistor; the datasheet rates collector current at -1.5 A continuous (IC) and -4 A peak pulse (ICM), with collector-emitter voltage of -40 V (VCEO).

Key specifications

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

CAD (KiCad official)

  • Symbol: FMMT720
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: fmmt720-etched.step / fmmt720-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fmmt720.step / fmmt720.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (5 pp, sha256 2b3de26fb43c2a5a, 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