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AS431BNTR-G1

Public Made by Adom

by adom

Diodes Incorporated 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
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docs as431bntr-g1: 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
as431bntr-g1-etched.fit.json as431bntr-g1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
as431bntr-g1-etched.glb as431bntr-g1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
as431bntr-g1-etched.step as431bntr-g1: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
as431bntr-g1.glb Publish 0.1.0 · Ray
as431bntr-g1.kicad_mod Publish 0.1.0 · Ray
as431bntr-g1.kicad_sym Publish 0.1.0 · Ray
as431bntr-g1.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
as431bntr-g1.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 as431bntr-g1: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray
README.md as431bntr-g1: specified limits as data (metadata.characteristics, 22 rows from the datasheet) · Ray

AS431BNTR-G1

Diodes Incorporated · Voltage Reference · SOT-23

AS431BNTR-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. Regulates the cathode current so this pin sits at VREF = 2.500 V above ANODE. Typical input bias current IREF = 0.7 uA (max 4 uA); absolute-max reference input current 10 mA.
2 CATHODE power_in Cathode of the internal shunt element. Sinks 1 mA to 100 mA in normal regulation; absolute-max cathode voltage 40 V, recommended operating range VREF (2.5 V) to 36 V. Off-state leakage 0.05 uA typ at VKA = 36 V. Dynamic impedance 0.15 Ω typ.
3 ANODE power_in Anode / common return of the shunt regulator. Reference is measured with respect to this pin; usually tied to circuit ground in shunt-regulator configurations.

Key specifications

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

Ordering variants

  • AS431BNTR-G1ANTR-E1
  • AS431BNTR-G1BNTR-E1
  • AS431BNTR-G1ANTR-G1
  • AS431BNTR-G1
  • AS431BNTR-G1AKTR-E1
  • AS431BNTR-G1BKTR-E1
  • AS431BNTR-G1AKTR-G1
  • AS431BNTR-G1BKTR-G1
  • AS431BNTR-G1ARTR-E1
  • AS431BNTR-G1BRTR-E1
  • AS431BNTR-G1ARTR-G1
  • AS431BNTR-G1BRTR-G1
  • AS431BNTR-G1AZ-E1
  • AS431BNTR-G1AZTR-E1
  • AS431BNTR-G1BZ-E1
  • AS431BNTR-G1BZTR-E1
  • AS431BNTR-G1AZ-G1
  • AS431BNTR-G1AZTR-G1
  • AS431BNTR-G1BZ-G1
  • AS431BNTR-G1BZTR-G1

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Reference Voltage (1.0% grade) VREF 2.475 2.5 2.525 V VKA = VREF, IKA = 10mA 5
Deviation of Reference Voltage Over Full Temperature Range (0 to +70°C) ∆VREF 4.5 8 mV VKA = VREF, IKA = 10mA, 0 to +70°C 5
Deviation of Reference Voltage Over Full Temperature Range (-40 to +85°C) ∆VREF 4.5 10 mV VKA = VREF, IKA = 10mA, -40 to +85°C 5
Deviation of Reference Voltage Over Full Temperature Range (-40 to +125°C) ∆VREF 4.5 16 mV VKA = VREF, IKA = 10mA, -40 to +125°C 5
Ratio of Change in Reference Voltage to Change in Cathode Voltage (10V to VREF) ∆VREF/∆VKA -1 -2.7 mV/V IKA = 10mA, ∆VKA = 10V to VREF 5
Ratio of Change in Reference Voltage to Change in Cathode Voltage (36V to 10V) ∆VREF/∆VKA -0.5 -2 mV/V IKA = 10mA, ∆VKA = 36V to 10V 5
Reference Current IREF 0.7 4 µA IKA = 10mA, R1 = 10kΩ, R2 = ∞ 5
Deviation of Reference Current Over Full Temperature Range ∆IREF 0.4 1.2 µA IKA = 10mA, R1 = 10kΩ, R2 = ∞, TA = -40 to +125°C 5
Minimum Cathode Current for Regulation IKA(Min) 0.4 1 mA VKA = VREF 5
Off-state Cathode Current IKA(Off) 0.05 1 µA VKA = 36V, VREF = 0 5
Dynamic Impedance ZKA 0.15 0.5 Ω VKA = VREF, IKA = 1 to 100mA, f ≤ 1.0kHz 5
Cathode Voltage (recommended operating) VKA 36 V 4
Cathode Current (recommended operating) IKA 1 100 mA 4
Operating Ambient Temperature Range TA -40 125 °C 4
Cathode Voltage VKA 40 V 4
Cathode Current Range (Continuous) IKA -100 150 mA Continuous 4
Reference Input Current Range IREF 10 mA 4
Power Dissipation (N package, SOT23) PD 370 mW N, K Package 4
Junction Temperature TJ 150 °C 4
Storage Temperature Range TSTG -65 150 °C 4
ESD (Human Body Model) ESD 2000 V Human Body Model 4
Thermal Resistance (SOT23) θJC 135.9 °C/W SOT23 5

CAD (KiCad official)

  • Symbol: AS431BNTR-G1
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: as431bntr-g1-etched.step / as431bntr-g1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); as431bntr-g1.step / as431bntr-g1.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
as431bntr-g1.step 59 KB You want the bare part, or you mark your own boards.
as431bntr-g1-etched.step 1.9 MB You want the part with AS431BNTR-G1 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 486 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 (20 pp, sha256 03f54aac77941ed9, 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