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GN431A 0.5%

Public Unreviewed

by Ray

GN Semic GN431A 0 5 Voltage Reference, SOT-23. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpmicgn431a 0.5%
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3D Model

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Symbol & Footprint

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Contents

README

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GN431A 0.5%

GN Semic · Voltage Reference · SOT-23

GN431A 0.5% from GN Semic, 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. Regulates VKA so that the voltage on REF (relative to Anode) equals the internal 2.495 V reference (VREF, typ, IKA=10 mA). Reference input current IREF is typically 1.5 μA (max 4 μA).
2 K passive Cathode. Regulated shunt terminal; sinks 1 mA to 100 mA in normal operation with VKA from VREF up to 36 V (abs max 37 V). Dynamic impedance ZKA ≈ 0.15 Ω typ.
3 A passive Anode. Common return terminal referenced to ground for both the cathode current path and the REF input.

Key specifications

Parameter Value
Manufacturer GN Semic
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • GN431A 0.5% SOT-23
  • GN431A 0.5% SOT-89

CAD (KiCad official)

  • Symbol: GN431A 0.5%
  • 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
gn431a-0-5.step 59 KB You want the bare part, or you mark your own boards.
gn431a-0-5-etched.step 1.8 MB You want the part with GN431A 0.5% already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 450 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: GN Semic datasheet (7 pp, sha256 ea99c4c853d5994e, retrieved 2026-08-17, 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: 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