component

ME431AXG

Public Unreviewed

by Ray

MICRONE Voltage Reference, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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Contents

README

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ME431AXG

MICRONE · Voltage Reference · SOT-23

ME431AXG from MICRONE, 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 REF input Reference input to the internal error amplifier. Compared against the internal 2.5 V bandgap (VREF); the regulator sinks cathode current to hold REF equal to VREF. Typical reference current 0.7 µA (max 3 µA); absolute max input current 10 mA.
2 CATHODE passive Regulator cathode. Sinks up to 100 mA (max 130 mA) from the rail being regulated; recommended operating VKA from VREF to 36 V (absolute max 40 V). Off-state cathode leakage ≤0.3 µA at VKA=36 V.
3 ANODE passive Regulator anode. Return terminal for cathode current; tied to the low side of the divider / system ground in a shunt-regulator topology.

Key specifications

Parameter Value
Manufacturer MICRONE
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • ME431AXG
  • ME431AXGBXG
  • ME431AXGAM3G
  • ME431AXGBM3G
  • ME431AXGATG
  • ME431AXGBTG
  • ME431AXGATBG
  • ME431AXGBTBG

CAD (KiCad official)

  • Symbol: ME431AXG
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
me431axg.step 59 KB You want the bare part, or you mark your own boards.
me431axg-etched.step 1.2 MB You want the part with ME431AXG already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 324 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: MICRONE datasheet (12 pp, sha256 9c5f9f93004c53ee, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF