AZ431LANTR-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 (feedback) input to the internal error amplifier. The device regulates cathode-to-anode voltage such that V(REF-ANODE) equals VREF (1.24 V typ). Reference input current range is limited to 10 mA max.
2	CATHODE	power_in	Cathode (K) terminal of the shunt regulator. Absolute maximum VKA = 20 V; recommended VKA range VREF to 18 V; continuous cathode current range -100 to +100 mA (sink 0.1 mA to 100 mA in normal operation).
3	ANODE	power_in	Anode (A) terminal of the shunt regulator; normally tied to the low-side return (ground) of the reference divider network.

Key specifications

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

Ordering variants

AZ431LANTR-G1Z
AZ431LANTR-G1
AZ431LANTR-G1STR
AZ431LANTR-G1SL

CAD (KiCad official)

Symbol: AZ431LANTR-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
`az431lantr-g1.step`	59 KB	You want the bare part, or you mark your own boards.
`az431lantr-g1-etched.step`	1.6 MB	You want the part with `AZ431LANTR-G1` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 434 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