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AZ431BN-ATRE1

Public Unreviewed

by Ray

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

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Contents

README

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AZ431BN-ATRE1

Diodes Incorporated · Voltage Reference · SOT-23

AZ431BN-ATRE1 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. Compared against the internal 2.5V VREF; drive from the external resistor divider between CATHODE and ANODE to program VKA = VREF(1 + R1/R2). Reference input current typ 0.7 μA (max 4 μA); absolute-max IREF is 10 mA.
2 CATHODE passive Cathode (K) of the shunt regulator; sinks the regulation current IKA from the supply through a series resistor. Operating VKA from VREF up to 36V, IKA 1 mA to 100 mA (absolute max -100 to +150 mA, VKA 40V). Dynamic impedance typ 0.15 Ω.
3 ANODE passive Anode (A) of the shunt regulator; the low-side return, tied to circuit ground (or the bottom of the external feedback divider). All cathode and reference currents return through this pin.

Key specifications

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

Ordering variants

  • AZ431BN-ATRE1AN-ATRE1
  • AZ431BN-ATRE1
  • AZ431BN-ATRE1AN-ATRG1
  • AZ431BN-ATRE1BN-ATRG1
  • AZ431BN-ATRE1AR-ATRE1
  • AZ431BN-ATRE1BR-ATRE1
  • AZ431BN-ATRE1AR-ATRG1
  • AZ431BN-ATRE1BR-ATRG1
  • AZ431BN-ATRE1AZ-AE1
  • AZ431BN-ATRE1AZ-ATRE1
  • AZ431BN-ATRE1BZ-AE1
  • AZ431BN-ATRE1BZ-ATRE1
  • AZ431BN-ATRE1AZ-AG1
  • AZ431BN-ATRE1AZ-ATRG1
  • AZ431BN-ATRE1BZ-AG1
  • AZ431BN-ATRE1BZ-ATRG1
  • AZ431BN-ATRE1AK-ATRE1
  • AZ431BN-ATRE1BK-ATRE1
  • AZ431BN-ATRE1AK-ATRG1
  • AZ431BN-ATRE1BK-ATRG1

CAD (KiCad official)

  • Symbol: AZ431BN-ATRE1
  • 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
az431bn-atre1.step 59 KB You want the bare part, or you mark your own boards.
az431bn-atre1-etched.step 1.7 MB You want the part with AZ431BN-ATRE1 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 454 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 af7f4848d81a3997, 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