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AZ431LBNTR-G1

Public Unreviewed

by Ray

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

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AZ431LBNTR-G1

Diodes Incorporated · Voltage Reference · SOT-23

AZ431LBNTR-G1 from Diodes Incorporated, 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 (non-inverting node compared to the internal 1.240V bandgap). Typically tied to the R1/R2 divider from CATHODE to set Vout = (1 + R1/R2) * VREF. Reference input current IREF ~0.15 uA typ (0.4 uA max).
2 CATHODE passive Cathode of the shunt regulator (equivalent to a zener cathode). Sinks the regulated shunt current IKA from 0.1 mA up to 100 mA; absolute-max VKA = 20 V, recommended VKA = VREF to 18 V. Dynamic impedance ~0.05 ohm typ at 1 kHz.
3 ANODE passive Anode of the shunt regulator, the common return terminal usually connected to circuit ground / the low side of the resistor divider. Return path for the cathode shunt current.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category PMIC
Pins 3

Ordering variants

  • AZ431LBNTR-G1
  • AZ431LBNTR-G1AZ431LANTR-G1
  • AZ431LBNTR-G1AZ431LANTR-E1
  • AZ431LBNTR-G1AZ431LAZTR-G1
  • AZ431LBNTR-G1AZ431LBZTR-G1
  • AZ431LBNTR-G1AZ431LAKTR-G1
  • AZ431LBNTR-G1AZ431LBKTR-G1
  • AZ431LBNTR-G1AZ431LARTR-G1
  • AZ431LBNTR-G1AZ431LBRTR-G1

CAD (KiCad official)

  • Symbol: AZ431LBNTR-G1
  • 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
az431lbntr-g1.step 59 KB You want the bare part, or you mark your own boards.
az431lbntr-g1-etched.step 1.8 MB You want the part with AZ431LBNTR-G1 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 463 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: Diodes Incorporated datasheet (19 pp, sha256 6b8c6ed92d8e1c2d, retrieved 2026-08-17, tier: manufacturer)
  • 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