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AZ431BN-ATRG1

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Diodes Incorporated Voltage References, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AZ431BN-ATRG1

Diodes Incorporated · Voltage References · SOT-23

AZ431BN-ATRG1 from Diodes Incorporated, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 REF input Reference input that sets the output voltage against the 2.5V VREF, with an absolute maximum reference input current of 10mA.
2 CATHODE passive Cathode of the shunt regulator, operated from VREF up to 36V and sinking 1mA to 100mA, with an absolute maximum of 40V.
3 ANODE power_in Anode of the shunt regulator, normally tied to ground as the return for the cathode current, which is rated -100 to 150mA absolute maximum.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category Power Management ICs
Pins 3

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 (0.8%) VREF 2.48 2.5 2.52 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) -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) -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 VKA 36 V Min = VREF 4
Cathode Current 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 4
Reference Input Current Range IREF 10 mA 4
Power Dissipation PD 370 mW N Package (SOT23) 4
Junction Temperature TJ 150 °C 4
Storage Temperature Range TSTG -65 150 °C 4
ESD (Human Body Model) ESD 2000 V 4
Thermal Resistance (Junction to Ambient) θJA 380 °C/W SOT23 4
Thermal Resistance (Junction to Case) θJC 135.48 °C/W SOT23 5

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing Abs ESD ESD (Human Body Model) 2000 V Note 4: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and 4

CAD (KiCad official)

  • Symbol: AZ431BN-ATRG1
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: az431bn-atrg1-etched.step / az431bn-atrg1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); az431bn-atrg1.step / az431bn-atrg1.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Diodes Incorporated datasheet (19 pp, sha256 af7f4848d81a3997, retrieved 2026-10-27, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF