component

ME431NAXG

Public Made by Adom

by adom

MICRONE Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs me431naxg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
me431naxg-etched.fit.json me431naxg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
me431naxg-etched.glb me431naxg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
me431naxg-etched.step me431naxg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
me431naxg.glb Publish 0.1.0 · Ray
me431naxg.kicad_mod Publish 0.1.0 · Ray
me431naxg.kicad_sym Publish 0.1.0 · Ray
me431naxg.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
me431naxg.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json me431naxg: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray
README.md me431naxg: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray

ME431NAXG

MICRONE · Voltage Reference · SOT-23

ME431NAXG 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 A passive Anode terminal of the shunt regulator (system ground / low side of the internal shunt element). Sinks the regulated cathode current back to the return rail.
2 K passive Cathode terminal of the shunt regulator (high side). Sinks 1 mA to 100 mA when the reference conducts; withstands up to 36 V (abs-max 40 V) with respect to the anode.
3 REF input Reference / control input to the internal error amplifier's non-inverting input. Regulates the cathode-anode voltage such that V(REF) = VREF (typ. 2.500 V, ±0.4% for the 'A' grade). Reference input current 0.7 µA typ (3 µA max); abs-max IREF = 10 mA.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • ME431NAXG
  • ME431NAXGNBXG
  • ME431NAXGBXG
  • ME431NAXGATG
  • ME431NAXGBTG
  • ME431NAXGATBG
  • ME431NAXGBTBG

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Cathode voltage VKA 40 V 4
Cathode current range (continuous) IKA -100 130 mA 4
Reference input current range IREF 10 mA 4
Power dissipation (SOT23 package) PD 300 mW SOT23 package 4
Junction temperature TJ 160 ℃ 4
Storage temperature range TSTG -65 150 ℃ 4
Package thermal impedance (SOT23 package) θJA 350 ℃/W SOT23 package 4
Cathode voltage VKA 36 V Minimum printed as VREF 4
Cathode current IKA 1 100 mA 4
Operating ambient temperature range -40 125 ℃ 4
Reference voltage (0.4% grade) VREF 2.49 2.5 2.51 V VKA=VREF, IKA=10mA 5
Deviation of reference voltage over temperature (0 to 70℃) ΔVREF 7 10 mV VKA=VREF, IKA=10mA, 0 to 70℃ 5
Deviation of reference voltage over temperature (-40 to 150℃) ΔVREF 25 30 mV VKA=VREF, IKA=10mA, -40 to 150℃ 5
Dynamic impedance KA / Z / 0.15 0.5 Ω VKA=VREF, IKA=1 to 100mA, f≤1.0KHz 5
Minimum cathode current for regulation IKA (MIN) 0.4 1 mA VKA=VREF 5
Ratio of change in reference voltage to change in cathode voltage (ΔVKA = 10V to VREF) ΔVREF/ΔVKA -0.8 -2.5 mV/V IKA=10mA, ΔVKA=10V to VREF 5
Ratio of change in reference voltage to change in cathode voltage (ΔVKA = 36V to 10V) ΔVREF/ΔVKA -0.6 -1.5 mV/V IKA=10mA, ΔVKA=36V to 10V 5
Reference current IREF 0.7 3 μA IKA=10mA, R1=10KΩ, R2=∝ 5
Deviation of reference current over full temperature range ΔIREF 0.1 1.2 μA IKA=10mA, R1=10KΩ, R2=∝, TA=40 to 150℃ 5
Off-state cathode current IKA (OFF) 0.03 0.3 μA VKA=36V, VREF=0 5
Reference voltage tolerance (ME431NAXG, suffix A) -0.4 0.4 % VREF=2.5V±0.4% 2
Equivalent full-range temperature coefficient 20 ppm/℃ Equivalent full-range, typical (features list) 1

CAD (KiCad official)

  • Symbol: ME431NAXG
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: me431naxg-etched.step / me431naxg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); me431naxg.step / me431naxg.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
me431naxg.step 59 KB You want the bare part, or you mark your own boards.
me431naxg-etched.step 1.3 MB You want the part with ME431NAXG already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 342 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 60082e69a25c0be4, 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